Self powered door-bell watcher
•Download as DOCX, PDF•
3 likes•1,741 views
This document presents a project proposal for a self-powered doorbell watcher circuit from HITEC University in Taxila, Pakistan. The circuit uses a rectifier and capacitor to store a charge from the doorbell's AC voltage when pressed. Later, pressing a button will discharge the capacitor through an LED or piezo sounder to indicate the doorbell was rung. The circuit can provide a minimum of 15 days of memory and can be adapted to monitor appliances powered by 115V or 230V mains by adding resistors and a capacitor for voltage regulation. Precautions are outlined for safety when working with mains voltage.
Report
Share
Report
Share
Recommended
Fault analysis
The document discusses short circuit analysis and fault calculations. It describes the different types of faults including three phase, line to ground, and line to line faults. It also discusses the need for short circuit studies to select proper circuit breakers. The document explains how to calculate short circuit currents using the bus impedance matrix and the z-bus building algorithm through adding network elements one by one.
Analog electronics course
This document provides an overview of analog electronics topics including semiconductor diodes, bipolar transistors, single and multi-stage amplifiers, and field effect transistors. It specifically discusses diodes and how they can be used as rectifiers to convert AC to DC power. There are three main types of rectifiers: half-wave, full-wave, and bridge rectifiers. The document explains how each type of rectifier works and its peak inverse voltage rating in relation to the maximum voltage of the power source.
BASIC ELECTRICAL ENGINEERING BEEE
Electrical Circuit Analysis” BEEE (BE-104),CHARGE AND CURRENT,KCL,KVL,NODAL ANALYSIS, MESH ANALYSIS ,NODE BRANCH VOLTAGE,CURRENT,LOOP,THEOREMS SUPERPOSITION THEOREMS,THEVENINS THEOREM,NORTORN'S THEOREM,SERIES PARALLEL,STAR TO DELTA CONVERSION,DELTA TO STAR CONVERSION
Solved Examples for Three - Phase Induction Motors
This document provides solutions to two academic examples involving calculations related to induction motors. The first example calculates motor slip percentage, induced torque, operating speed if torque is doubled, and gross power if torque is doubled for a given induction motor setup. The second example calculates maximum torque, corresponding speed and slip, starting torque, effect of doubling rotor resistance, sketches torque-slip curves, and checks motor stability at different speeds. Review questions are also provided related to torque-speed characteristics, torque development, starting torque control, speed control, maximum torque conditions, full load torque, self-starting behavior, slip never being zero, effects of rotor resistance, reasons for high starting torque, and motors with high starting torque.
Testing of Circuit Breakers.pptx
The document discusses different methods for testing circuit breakers. It describes synthetic testing methods, which use separate sources for the short-circuit current and transient recovery voltage. The two main synthetic test circuits are the parallel current-injection method and series voltage injection method. The parallel current-injection method uses a current source for the short-circuit current and capacitors to inject additional high-frequency current. The series voltage injection method uses a voltage source to apply the transient recovery voltage. Synthetic testing allows testing of higher voltage circuit breakers than direct testing methods.
Experiment 2 AC Machines
This document describes an experiment conducted on a three-phase induction motor using a squirrel cage rotor. The objectives are to demonstrate the operating characteristics of the motor and record its load characteristics under star and delta connections. The procedures involve connecting the motor in star and delta configurations and measuring voltage, current, speed, power factor, efficiency and slip at various torque loads. The results are recorded in tables and graphs are plotted showing the relationships between the various parameters. The aim is to examine the motor's performance characteristics under different connections and loads.
Power flow through transmission line.
Includes Introduction, Derivation of power flow through transmission line, Single line diagram of three phase transmission, methods of finding the performance of transmission line. 1.Analytical Method 2.Graphical method (circle diagram)., circle diagram of receiving end side and sending end side.
Verification of Thevenin’s Theorem. lab report
1) The document describes an experiment to verify Thevenin's theorem, which states that a linear two-terminal circuit can be represented by an equivalent circuit with a voltage source Vth and resistor Rth.
2) The experiment used a DC power supply, resistors, wires, a voltmeter, and ammeter to construct the circuit and measure voltages and currents.
3) Calculations showed that Vth = 3.4V, Rth = 113Ω, Io = 10mA, IL' = 10.2mA with an error of 1.96% between the actual and equivalent currents, verifying Thevenin's theorem.
Recommended
Fault analysis
The document discusses short circuit analysis and fault calculations. It describes the different types of faults including three phase, line to ground, and line to line faults. It also discusses the need for short circuit studies to select proper circuit breakers. The document explains how to calculate short circuit currents using the bus impedance matrix and the z-bus building algorithm through adding network elements one by one.
Analog electronics course
This document provides an overview of analog electronics topics including semiconductor diodes, bipolar transistors, single and multi-stage amplifiers, and field effect transistors. It specifically discusses diodes and how they can be used as rectifiers to convert AC to DC power. There are three main types of rectifiers: half-wave, full-wave, and bridge rectifiers. The document explains how each type of rectifier works and its peak inverse voltage rating in relation to the maximum voltage of the power source.
BASIC ELECTRICAL ENGINEERING BEEE
Electrical Circuit Analysis” BEEE (BE-104),CHARGE AND CURRENT,KCL,KVL,NODAL ANALYSIS, MESH ANALYSIS ,NODE BRANCH VOLTAGE,CURRENT,LOOP,THEOREMS SUPERPOSITION THEOREMS,THEVENINS THEOREM,NORTORN'S THEOREM,SERIES PARALLEL,STAR TO DELTA CONVERSION,DELTA TO STAR CONVERSION
Solved Examples for Three - Phase Induction Motors
This document provides solutions to two academic examples involving calculations related to induction motors. The first example calculates motor slip percentage, induced torque, operating speed if torque is doubled, and gross power if torque is doubled for a given induction motor setup. The second example calculates maximum torque, corresponding speed and slip, starting torque, effect of doubling rotor resistance, sketches torque-slip curves, and checks motor stability at different speeds. Review questions are also provided related to torque-speed characteristics, torque development, starting torque control, speed control, maximum torque conditions, full load torque, self-starting behavior, slip never being zero, effects of rotor resistance, reasons for high starting torque, and motors with high starting torque.
Testing of Circuit Breakers.pptx
The document discusses different methods for testing circuit breakers. It describes synthetic testing methods, which use separate sources for the short-circuit current and transient recovery voltage. The two main synthetic test circuits are the parallel current-injection method and series voltage injection method. The parallel current-injection method uses a current source for the short-circuit current and capacitors to inject additional high-frequency current. The series voltage injection method uses a voltage source to apply the transient recovery voltage. Synthetic testing allows testing of higher voltage circuit breakers than direct testing methods.
Experiment 2 AC Machines
This document describes an experiment conducted on a three-phase induction motor using a squirrel cage rotor. The objectives are to demonstrate the operating characteristics of the motor and record its load characteristics under star and delta connections. The procedures involve connecting the motor in star and delta configurations and measuring voltage, current, speed, power factor, efficiency and slip at various torque loads. The results are recorded in tables and graphs are plotted showing the relationships between the various parameters. The aim is to examine the motor's performance characteristics under different connections and loads.
Power flow through transmission line.
Includes Introduction, Derivation of power flow through transmission line, Single line diagram of three phase transmission, methods of finding the performance of transmission line. 1.Analytical Method 2.Graphical method (circle diagram)., circle diagram of receiving end side and sending end side.
Verification of Thevenin’s Theorem. lab report
1) The document describes an experiment to verify Thevenin's theorem, which states that a linear two-terminal circuit can be represented by an equivalent circuit with a voltage source Vth and resistor Rth.
2) The experiment used a DC power supply, resistors, wires, a voltmeter, and ammeter to construct the circuit and measure voltages and currents.
3) Calculations showed that Vth = 3.4V, Rth = 113Ω, Io = 10mA, IL' = 10.2mA with an error of 1.96% between the actual and equivalent currents, verifying Thevenin's theorem.
Voltage Regulators ppt
Content
Introduction
Voltage Regulation
Line Regulation
Load Regulation
Series Regulator
Shunt Regulator
Switching Regulator
IC Voltage Regulator
Magnetic particle inspection
Magnetic particle inspection is a non-destructive testing method used to detect surface and near-surface defects in ferromagnetic materials like iron and steel. It works by magnetizing the material and applying iron-based particles that are attracted to discontinuities in the magnetic field caused by defects. The document discusses the basic principles of magnetism involved, different magnetization techniques like direct current and indirect methods, factors that affect sensitivity, and common applications in industries like aerospace, automotive, and petrochemical. It also outlines advantages like being quick and inexpensive, and disadvantages such as limitations to ferromagnetic materials and potential for non-relevant indications.
Grounding and techniques
Grounding electrical systems properly protects people and equipment from faults, lightning strikes, and static discharge by providing a path to dissipate stray energy safely into the earth. Different grounding methods like single stakes, ground rods, plates, and meshes can be used depending on the site conditions and equipment. Proper testing of soil resistivity and ground resistance is important to select the suitable grounding type and ensure effectiveness of the system.
Characteristics of instruments
This document presents information on the characteristics of instruments. It discusses both static and dynamic characteristics. The main static characteristics described are accuracy, sensitivity, reproducibility, drift, static error, dead zone, precision, threshold, linearity, stability, range/span, bias, tolerance, and hysteresis. The dynamic characteristics covered are speed of response, fidelity, lag, and dynamic error. The document was created by five students and guided by a professor to provide an overview of important instrument characteristics.
DC Metering - Moving toward center stage
DC metering is becoming increasingly important due to growing DC power applications like electric vehicles, renewable energy, and data centers. Standards and tools for DC metering are being developed to provide accurate billing for this energy. Utilities and manufacturers are working to respond to demand through standards, calibrations, and guidance. As DC applications continue advancing, the requirements and technologies for DC metering will also need to evolve.
Electronic analog meters
Electronic analog meters measure values through the position of a pointer on a circular scale rather than displaying a numeric value. They consist of a movable coil in a magnetic field that is attached to a pointer. When a current passes through the coil, it experiences a torque based on the measured quantity, causing the pointer to indicate the value on the scale. Common types of electronic analog meters include galvanometers, ammeters, voltmeters, ohmmeters, wattmeters, and energy meters, each designed to measure specific electrical properties through variations in their coil and circuit configurations.
SIMULATION OF DC SERIES MOTOR CHARACTERISTICS
THIS REPORT IS BASED ON THE SIMULATION OF DC SERIES MOTOR CHARACTERISTICS AND THIS REPORT IS PREPARED WELL ACCORDING TO THE NORMS AND THE REPORT ALSO CONTAINS A MATLAB SIMULINK OF THE DC MOTOR DESIGN AND THE RESULTS ARE ALSO PLOTTED IN THIS REPORT AND THE DESCRIPTION ALSO ABOUT THE REPORT IS ALSO PREPARED WELL IN THIS REPORT AND THIS IS USEFUL FOR THE ENGINEERING STUDENTS
MV Switchgear from IEEE
MV Switchgear provides centralized control and protection of medium-voltage power equipment and circuits in industrial, commercial, and utility installations involving generators, motors, feeder circuits, and transmission and distribution lines.
Velocity measurements
1. The document discusses various methods for measuring linear and angular velocity, including electromagnetic, seismic, and digital transducers as well as using the Doppler effect.
2. Electromagnetic transducers are the most commonly used for linear velocity and work by inducing a voltage in a coil from the motion of a magnet. Moving magnet and moving coil types are described.
3. Angular velocity can be measured with a tachometer, which can be mechanical and count revolutions or electrical and generate a voltage proportional to speed.
Lab 02 Resistor color coding and ohms law
1. This document describes an experiment to identify resistor color codes and verify Ohm's Law. It includes objectives, equipment, procedures, and questions.
2. The first part explains how to determine a resistor's value and tolerance from its color bands. Tables list the color codes used in 4-band and 5-band resistors.
3. The second part tests Ohm's Law by measuring the current through resistors under different voltages. A circuit is assembled and current is measured both ways through each resistor to verify the relationships defined by Ohm's Law.
All Electrical Engineering Formulas
This File presenting all electrical engineering formulas and units , it's a powerful PDF file that you will have all data fourmulas of electricity , electronics & electrical engineering.
also it has a solved examples for every presented law.
Circuit lab 8 verification of thevenin's theorem@taj
Circuit lab 8 verification of thevenin's theorem@taj
.
This lecture is from my class lectures in IIT-JU.
.
Find me:
Website: https://www.tajimiitju.blogspot.com
Linked in: https://www.linkedin.com/in/tajimiitju
Researchgate: https://www.researchgate.net/profile/Tajim_Md_Niamat_Ullah_Akhund
Youtube: https://www.youtube.com/tajimiitju?sub_confirmation=1
Slideshare: https://www.slideshare.net/TajimMdNiamatUllahAk
Facebook: https://www.facebook.com/tajim.mohammad
Gitlab: https://gitlab.com/users/tajimiitju
Google+: plus.google.com/+tajimiitju
Email: tajim.mohammad.3@gmail.com
Twitter: https://twitter.com/Tajim53
Power factor presentation
This document discusses AC power, power factor, and power factor correction. It defines active power, reactive power, and apparent power. It explains that power factor is the cosine of the angle between the voltage and current waveforms, and that most loads have a lagging power factor less than 1 due to their inductive nature. This causes issues like increased conductor size and utility charges. Power factor can be corrected by using static capacitors or a synchronous condenser to supply leading reactive current to balance the load's lagging current.
Working principle diode and special diode
This document discusses different types of diodes, including their basic functions and applications. It begins with an overview of basic diodes and their current-voltage characteristics. It then focuses on special diodes like Zener diodes, which maintain a relatively constant voltage when operated in reverse breakdown. Other diodes discussed include varactor diodes, light-emitting diodes (LEDs), photodiodes, Schottky diodes, laser diodes, PIN diodes, current regulator diodes, step-recovery diodes, and tunnel diodes. Each type has a specialized function and is commonly used in applications like power regulation, displays, optical communications, and high-frequency switching.
Transformer Differential Protection Setting Calculations
Objectives
�Examine CT performance
�Calculate winding “tap” values
�Determine 87T pickup points
Determine variable percentage slope breakpoints
Determine harmonic restraint values
�Determine 87H pick up
�Determine 87GD pick up
Synchronous Motors.pptx
Synchronous motors operate at a constant synchronous speed determined by supply frequency and number of poles. They are not self-starting and require an external prime mover to initially rotate the rotor up to synchronous speed. Once synchronized, the rotor rotates in sync with the rotating stator magnetic field. To make synchronous motors self-starting, a squirrel cage or damper winding is added to the rotor. Synchronous motors are used in applications requiring constant speed operation such as textile and paper mills with variable frequency drives. They can also improve power factor when overexcited as synchronous condensers.
Simple Current Transformer (CT) Testing for Switchyard Equipment.
This document summarizes pre-commissioning test results for current transformers. It includes information about the customer, contractor, substation, switchgear, CT location, serial numbers, test results for polarity, insulation resistance, knee point voltage and current, ratio tests, and test equipment details. Signatures and dates from the contractor and witness are at the bottom to verify the tests were properly conducted and witnessed.
Rlc circuits and differential equations1
The document describes deriving a differential equation to model the behavior of an RLC circuit. It provides the component values for an RLC circuit that was designed and built. Through applying Kirchhoff's voltage law and differentiating the equation, a second order differential equation is derived. The parameters are then substituted into the equation to solve for the natural response of the underdamped circuit. The derived differential equation solution is compared to simulations and measurements from an oscilloscope.
Devices part 1
Switchgear and control panels contain electrical disconnects, fuses, and circuit breakers to control, protect, and isolate equipment in power systems. Solid state devices like diodes, thyristors, transistors, and other semiconductors are increasingly used for control and protection over mechanical devices due to greater reliability and speed. Power semiconductor devices must conduct large currents with low losses while blocking high voltages, which is achieved through lightly doped drift layers between heavily doped layers.
Three phase half wave controlled converter
The document discusses a three-phase half-wave converter circuit. It includes diagrams of the circuit layout with varying phase angles between 0-90 degrees. The maximum average DC output voltage is obtained at a delay angle of 0 degrees and the formula for calculating this output is provided. Charts show how the output DC voltage and RMS voltage varies based on the phase angle.
DATASHEET INVERSORES R6 SAJ TRIFASICOS LV
This document is a user manual for SAJ Innovation's R6 series rooftop solar inverters. It provides specifications for the inverters, including power ratings, electrical parameters, safety features and certifications. The manual also covers installation instructions, electrical connections, operation and maintenance guidelines. Troubleshooting tips are included to help remedy any errors. The inverters are designed to convert solar power from photovoltaic panels into alternating current that matches grid requirements.
CWC - Contactor
The document discusses compact contactors CWC0 that are smaller than conventional contactors but can still switch loads up to 690V. They have a long service life reaching over one million operations. The contactors come in different configurations up to 22A and are suitable for applications in industries like woodworking, food processing, and more. The document describes various accessories that can be used with the contactors like mechanical interlocks, surge suppressors, timers, and more. It provides specifications and certifications of the compact contactors.
More Related Content
What's hot
Voltage Regulators ppt
Content
Introduction
Voltage Regulation
Line Regulation
Load Regulation
Series Regulator
Shunt Regulator
Switching Regulator
IC Voltage Regulator
Magnetic particle inspection
Magnetic particle inspection is a non-destructive testing method used to detect surface and near-surface defects in ferromagnetic materials like iron and steel. It works by magnetizing the material and applying iron-based particles that are attracted to discontinuities in the magnetic field caused by defects. The document discusses the basic principles of magnetism involved, different magnetization techniques like direct current and indirect methods, factors that affect sensitivity, and common applications in industries like aerospace, automotive, and petrochemical. It also outlines advantages like being quick and inexpensive, and disadvantages such as limitations to ferromagnetic materials and potential for non-relevant indications.
Grounding and techniques
Grounding electrical systems properly protects people and equipment from faults, lightning strikes, and static discharge by providing a path to dissipate stray energy safely into the earth. Different grounding methods like single stakes, ground rods, plates, and meshes can be used depending on the site conditions and equipment. Proper testing of soil resistivity and ground resistance is important to select the suitable grounding type and ensure effectiveness of the system.
Characteristics of instruments
This document presents information on the characteristics of instruments. It discusses both static and dynamic characteristics. The main static characteristics described are accuracy, sensitivity, reproducibility, drift, static error, dead zone, precision, threshold, linearity, stability, range/span, bias, tolerance, and hysteresis. The dynamic characteristics covered are speed of response, fidelity, lag, and dynamic error. The document was created by five students and guided by a professor to provide an overview of important instrument characteristics.
DC Metering - Moving toward center stage
DC metering is becoming increasingly important due to growing DC power applications like electric vehicles, renewable energy, and data centers. Standards and tools for DC metering are being developed to provide accurate billing for this energy. Utilities and manufacturers are working to respond to demand through standards, calibrations, and guidance. As DC applications continue advancing, the requirements and technologies for DC metering will also need to evolve.
Electronic analog meters
Electronic analog meters measure values through the position of a pointer on a circular scale rather than displaying a numeric value. They consist of a movable coil in a magnetic field that is attached to a pointer. When a current passes through the coil, it experiences a torque based on the measured quantity, causing the pointer to indicate the value on the scale. Common types of electronic analog meters include galvanometers, ammeters, voltmeters, ohmmeters, wattmeters, and energy meters, each designed to measure specific electrical properties through variations in their coil and circuit configurations.
SIMULATION OF DC SERIES MOTOR CHARACTERISTICS
THIS REPORT IS BASED ON THE SIMULATION OF DC SERIES MOTOR CHARACTERISTICS AND THIS REPORT IS PREPARED WELL ACCORDING TO THE NORMS AND THE REPORT ALSO CONTAINS A MATLAB SIMULINK OF THE DC MOTOR DESIGN AND THE RESULTS ARE ALSO PLOTTED IN THIS REPORT AND THE DESCRIPTION ALSO ABOUT THE REPORT IS ALSO PREPARED WELL IN THIS REPORT AND THIS IS USEFUL FOR THE ENGINEERING STUDENTS
MV Switchgear from IEEE
MV Switchgear provides centralized control and protection of medium-voltage power equipment and circuits in industrial, commercial, and utility installations involving generators, motors, feeder circuits, and transmission and distribution lines.
Velocity measurements
1. The document discusses various methods for measuring linear and angular velocity, including electromagnetic, seismic, and digital transducers as well as using the Doppler effect.
2. Electromagnetic transducers are the most commonly used for linear velocity and work by inducing a voltage in a coil from the motion of a magnet. Moving magnet and moving coil types are described.
3. Angular velocity can be measured with a tachometer, which can be mechanical and count revolutions or electrical and generate a voltage proportional to speed.
Lab 02 Resistor color coding and ohms law
1. This document describes an experiment to identify resistor color codes and verify Ohm's Law. It includes objectives, equipment, procedures, and questions.
2. The first part explains how to determine a resistor's value and tolerance from its color bands. Tables list the color codes used in 4-band and 5-band resistors.
3. The second part tests Ohm's Law by measuring the current through resistors under different voltages. A circuit is assembled and current is measured both ways through each resistor to verify the relationships defined by Ohm's Law.
All Electrical Engineering Formulas
This File presenting all electrical engineering formulas and units , it's a powerful PDF file that you will have all data fourmulas of electricity , electronics & electrical engineering.
also it has a solved examples for every presented law.
Circuit lab 8 verification of thevenin's theorem@taj
Circuit lab 8 verification of thevenin's theorem@taj
.
This lecture is from my class lectures in IIT-JU.
.
Find me:
Website: https://www.tajimiitju.blogspot.com
Linked in: https://www.linkedin.com/in/tajimiitju
Researchgate: https://www.researchgate.net/profile/Tajim_Md_Niamat_Ullah_Akhund
Youtube: https://www.youtube.com/tajimiitju?sub_confirmation=1
Slideshare: https://www.slideshare.net/TajimMdNiamatUllahAk
Facebook: https://www.facebook.com/tajim.mohammad
Gitlab: https://gitlab.com/users/tajimiitju
Google+: plus.google.com/+tajimiitju
Email: tajim.mohammad.3@gmail.com
Twitter: https://twitter.com/Tajim53
Power factor presentation
This document discusses AC power, power factor, and power factor correction. It defines active power, reactive power, and apparent power. It explains that power factor is the cosine of the angle between the voltage and current waveforms, and that most loads have a lagging power factor less than 1 due to their inductive nature. This causes issues like increased conductor size and utility charges. Power factor can be corrected by using static capacitors or a synchronous condenser to supply leading reactive current to balance the load's lagging current.
Working principle diode and special diode
This document discusses different types of diodes, including their basic functions and applications. It begins with an overview of basic diodes and their current-voltage characteristics. It then focuses on special diodes like Zener diodes, which maintain a relatively constant voltage when operated in reverse breakdown. Other diodes discussed include varactor diodes, light-emitting diodes (LEDs), photodiodes, Schottky diodes, laser diodes, PIN diodes, current regulator diodes, step-recovery diodes, and tunnel diodes. Each type has a specialized function and is commonly used in applications like power regulation, displays, optical communications, and high-frequency switching.
Transformer Differential Protection Setting Calculations
Objectives
�Examine CT performance
�Calculate winding “tap” values
�Determine 87T pickup points
Determine variable percentage slope breakpoints
Determine harmonic restraint values
�Determine 87H pick up
�Determine 87GD pick up
Synchronous Motors.pptx
Synchronous motors operate at a constant synchronous speed determined by supply frequency and number of poles. They are not self-starting and require an external prime mover to initially rotate the rotor up to synchronous speed. Once synchronized, the rotor rotates in sync with the rotating stator magnetic field. To make synchronous motors self-starting, a squirrel cage or damper winding is added to the rotor. Synchronous motors are used in applications requiring constant speed operation such as textile and paper mills with variable frequency drives. They can also improve power factor when overexcited as synchronous condensers.
Simple Current Transformer (CT) Testing for Switchyard Equipment.
This document summarizes pre-commissioning test results for current transformers. It includes information about the customer, contractor, substation, switchgear, CT location, serial numbers, test results for polarity, insulation resistance, knee point voltage and current, ratio tests, and test equipment details. Signatures and dates from the contractor and witness are at the bottom to verify the tests were properly conducted and witnessed.
Rlc circuits and differential equations1
The document describes deriving a differential equation to model the behavior of an RLC circuit. It provides the component values for an RLC circuit that was designed and built. Through applying Kirchhoff's voltage law and differentiating the equation, a second order differential equation is derived. The parameters are then substituted into the equation to solve for the natural response of the underdamped circuit. The derived differential equation solution is compared to simulations and measurements from an oscilloscope.
Devices part 1
Switchgear and control panels contain electrical disconnects, fuses, and circuit breakers to control, protect, and isolate equipment in power systems. Solid state devices like diodes, thyristors, transistors, and other semiconductors are increasingly used for control and protection over mechanical devices due to greater reliability and speed. Power semiconductor devices must conduct large currents with low losses while blocking high voltages, which is achieved through lightly doped drift layers between heavily doped layers.
Three phase half wave controlled converter
The document discusses a three-phase half-wave converter circuit. It includes diagrams of the circuit layout with varying phase angles between 0-90 degrees. The maximum average DC output voltage is obtained at a delay angle of 0 degrees and the formula for calculating this output is provided. Charts show how the output DC voltage and RMS voltage varies based on the phase angle.
What's hot (20)
Circuit lab 8 verification of thevenin's theorem@taj
Circuit lab 8 verification of thevenin's theorem@taj
Transformer Differential Protection Setting Calculations
Transformer Differential Protection Setting Calculations
Simple Current Transformer (CT) Testing for Switchyard Equipment.
Simple Current Transformer (CT) Testing for Switchyard Equipment.
Similar to Self powered door-bell watcher
DATASHEET INVERSORES R6 SAJ TRIFASICOS LV
This document is a user manual for SAJ Innovation's R6 series rooftop solar inverters. It provides specifications for the inverters, including power ratings, electrical parameters, safety features and certifications. The manual also covers installation instructions, electrical connections, operation and maintenance guidelines. Troubleshooting tips are included to help remedy any errors. The inverters are designed to convert solar power from photovoltaic panels into alternating current that matches grid requirements.
CWC - Contactor
The document discusses compact contactors CWC0 that are smaller than conventional contactors but can still switch loads up to 690V. They have a long service life reaching over one million operations. The contactors come in different configurations up to 22A and are suitable for applications in industries like woodworking, food processing, and more. The document describes various accessories that can be used with the contactors like mechanical interlocks, surge suppressors, timers, and more. It provides specifications and certifications of the compact contactors.
IRJET- A Mitigation of Voltage Fluctuation on Small Scale Industry
This document discusses voltage fluctuations that can damage equipment in small industries and presents a solution using a voltage stabilizer. It begins with an introduction to power quality issues like voltage sags, swells, and interruptions that are caused by problems in the power system. It then describes the components and working of a small model of a voltage stabilizer that uses a phase controller technique to regulate the voltage and maintain a constant level as the load changes, in order to protect equipment from damage caused by fluctuations. Diagrams of the circuit are provided and calculations for determining the firing angle of thyristors in the stabilizer are shown.
Kde200 user manual
CÔNG TY CỔ PHẦN THIẾT BỊ ĐIỆN HOÀNG PHƯƠNG
Địa chỉ: Số 10, ngõ 44, phố Võ Thị Sáu, P.Thanh Nhàn, Q.Hai Bà Trưng, TP. Hà Nội
MST: 0106798886
Điện thoại: 024.3215.1322
Website : Hoangphuongjsc.com
Phone/Zalo : 0944 240 317 / Kinhdoanh1.hpe@gmail.com
Phone/Zalo : 0975 123 698 / Kinhdoanh2.hpe@gmail.com
Phone/Zalo : 0961 008 858 / Kinhdoanh3.hpe@gmail.com
14269179.pdf
This document provides instructions for installing and wiring a DVP-PLC programmable logic controller. It describes the components of the PLC including status indicators, I/O ports, and expansion ports. Wiring diagrams are provided for connecting the main processing unit, digital I/O expansion units, and power supply modules. Guidelines are given for mounting the PLC enclosure and routing wires. Technical specifications are listed for input/output points, memory, communication ports, operating conditions, and power requirements.
Contactor lc1d schneider
CÔNG TY CỔ PHẦN THIẾT BỊ ĐIỆN HOÀNG PHƯƠNG
Địa chỉ: Số 10, ngõ 44, phố Võ Thị Sáu, P.Thanh Nhàn, Q.Hai Bà Trưng, TP. Hà Nội
MST: 0106798886
Điện thoại: 024.3215.1322
Website : Hoangphuongjsc.com
Phone/Zalo : 0944 240 317 / Kinhdoanh1.hpe@gmail.com
Phone/Zalo : 0975 123 698 / Kinhdoanh2.hpe@gmail.com
Phone/Zalo : 0961 008 858 / Kinhdoanh3.hpe@gmail.com
Contactor LC1D schneider
This document provides contact and contactor references for TeSys D Green contactors. It lists contactor models for motor control up to 37 kW and 400V AC-3, including standard power ratings. It also provides information on auxiliary contact blocks, accessories, and coil voltage codes. Dimensions and technical specifications are given for each contactor model.
Contactor lc1 d schneider
This document provides contact and contactor references for TeSys D Green contactors. It lists contactor models for 3-phase motors from 9A to 150A, along with auxiliary contact blocks, accessories, and mounting systems. Technical specifications are provided for each contactor model, including voltage ratings, current ratings, weight, and fixing options.
Catalog Contactor Fuji Electric - Beeteco.com
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam, Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
Catalog contactor fuji-electric Mới Nhất - Hạo Phương
The document provides an overview of Fuji Electric's low voltage equipment product series, including magnetic contactors and starters, DC magnetic contactors, and optional units. The SC and SW series magnetic contactors and starters feature a long electrical life, bifurcated auxiliary contacts, compliance with international standards, and options for increased functionality. The SZ series of DC magnetic contactors are compact and lightweight, and are suitable for controlling DC motors and circuits up to 360A. A wide range of optional units are also available to enhance the functionality of magnetic switches.
Delta vfd lfrekv
This document provides a 3-sentence summary of a user manual for Delta Electronics' VFD-L Series AC Drive:
The user manual covers installation, parameter setting, troubleshooting and maintenance for Delta's VFD-L Series 115V/230V 200W-2HP general purpose AC drive. It includes safety guidelines, wiring diagrams, descriptions of key parameters and functions, and technical specifications for proper operation of the drive. The document is intended to help users safely install and operate the VFD-L Series AC Drive.
Thermoelectricity
This document discusses protection of transformers. It provides an introduction to transformers and the need for their protection. It describes various faults in transformers and the protection schemes employed, including relays, circuit breakers, surge arrestors, thermostats and pressure relief valves. It then analyzes the transformer protection system at a 33/11 kV substation in Chandragiri, describing the equipment used on the high and low voltage sides. The conclusion states that various transformer protection schemes have been analyzed at this substation.
Design and fabrication of over voltage relay
This document describes the design and fabrication of an over voltage relay to be integrated into a power system lab. It presents the circuit design which uses a transformer, rectifier, regulators, op-amp, resistors, capacitors, diode, potentiometer, and relay. The over voltage relay works by comparing the input voltage to a reference voltage using an op-amp circuit. If the input voltage is higher than the reference voltage, the relay will trip to protect equipment from overvoltage.
industrial training on 132 kv substation
The document is a presentation on the Liluah 132/33/25 KV substation in West Bengal. It includes acknowledgments, a single line diagram of the substation, and sections covering various equipment found at the substation like electrical busbars, protective relay schemes, lightning protection, isolators, capacitor banks, powerline carrier communication, batteries, earth transformers, traction transformers, station service transformers, and power transformers. Technical specifications are provided for some of the major equipment.
01 - Contactor - Fuji Electric
Catalog thiết bị đóng cắt Fuji Electric - 01 - Contactor
*********************************************************************
CTY TNHH HẠO PHƯƠNG - Nhà phân phối chính thức các thiết bị điện công nghiệp và tự động hóa của hãng FUJI ELECTRIC JAPAN tại Việt Nam
Xem chi tiết các sản phẩm Fuji Electric tại
http://haophuong.com/b1033533/fuji-electric
Dec2001 contactor
The document provides information on Fujielectric's low voltage equipment catalog, including magnetic contactors, starters, thermal overload relays, and solid-state contactors. It summarizes key specifications and features of their SC and SW series contactors and starters, such as long electrical life of 2 million operations, easy addition of optional modules, meeting various international standards, and employing new technologies like their Super Magnet for reliable performance. The document is intended to introduce readers to Fujielectric's low voltage product catalog and provide an overview of their magnetic contactors and starters.
Over/Under Voltage Protection Circuit
The Over and Under Voltage protection circuit can protect electrical appliance from in the condition of power surges.
The project theme was to design an economical and efficient power protection circuit that could be capable of safely isolating the power of machine incase of power surges in mains.
Delta vfd c200-m_en_20120601
The document provides installation instructions for DELTA's VFD-C200 Series AC motor drives. It recommends installing drives in a metal cabinet with minimum clearances between drives to prevent overheating. Drives should be installed in pollution degree 2 environments and proper airflow direction must be maintained. When installing multiple drives, a metal separation is required between drives to prevent mutual heating.
Kyn28 metal clad switchgear
This document summarizes the key specifications and components of the KYN28 indoor metal-clad withdrawable switchgear from Zhejiang Farady Powertech Co., Ltd. The switchgear is rated for voltages between 3.6-24kV and currents between 630-4000A. It has compartments for busbars, circuit breakers, cables, and low-voltage components. Main components include VS1 vacuum circuit breakers, VD4 circuit breakers, and current and voltage transformers. The switchgear meets various standards and can be used in environments from -15°C to 40°C and up to 1000 meters in altitude.
Dec1901a p002 009
This document provides information on Fuji Electric's magnetic contactors and starters, including the SC and SW series. It describes the key features and advantages of these products, such as their modular design that allows for easy addition of functions, long electrical life, wide voltage ratings, and bifurcated auxiliary contacts. The SC-N series is highlighted for using an electronically-controlled SUPER MAGNET coil that provides positive pick-up and drop-out without chattering across a wide voltage range on both AC and DC power supplies. Safety features like terminal covers and insulation barriers are also summarized.
Similar to Self powered door-bell watcher (20)
IRJET- A Mitigation of Voltage Fluctuation on Small Scale Industry
IRJET- A Mitigation of Voltage Fluctuation on Small Scale Industry
Catalog contactor fuji-electric Mới Nhất - Hạo Phương
Catalog contactor fuji-electric Mới Nhất - Hạo Phương
More from abdullahkhalid50
Self Balancing Robot Project proposal
This document presents a project proposal for developing a self-balancing two-wheeled robot (instructabot) using an Arduino microcontroller. The robot will use sensors to read its environment and a PID controller to balance itself. The aims are to demonstrate balancing techniques, design a discrete digital control system for stability, develop the chassis and software to read sensors and control actuators to enable the robot to stay upright. A literature review covers previous work on self-balancing robots and control systems. A planning chart outlines the project timeline over 16 weeks including proposal, purchasing, prototyping, testing and completion.
How to use Ansys work bench? Example solved
Modulus of elasticity is 200Gpa for section 1 and 80Gpa for section 2. Area of cross section is mentioned for sections 1and 2.
• Calculate the maximum deflection.
• Stress in each section.
mat lab code to display heat flow (Q) and Thermal resistance (‘R’)
Write a mat lab code to display heat flow (Q) and Thermal resistance (‘R’) by varying the insulation radius. Take any suitable value of all unknown required parameters.
Also plot ‘Q’ and ‘Rth’ verses ‘r2’.
How to Calculate critical radius from “Graph” or ‘Array’, and compare with following relation;
Heat transfer area and Heat transfer cofficient (U)
Working on the radiator of Suzuki Baleno 1999.
How to calculate the overall heat transfer coefficient (U)?
How to calculate the heat transfer area and compare it with the experimental data being collected.
mat lab code to display heat flow (Q) and Thermal resistance (‘R’) by varyin...
How to write a mat lab code to display heat flow (Q) and Thermal resistance (‘R’) by varying the insulation radius?
very easy and discriptive
Piping network (fluid mechanics)
1. The students were tasked with designing a piping network to supply water to seven tank areas in Karachi according to specific head requirements.
2. They approached the solution by placing the source at a 31cm head and dividing the flow into two equal parts to simplify calculations.
3. Calculations were performed to determine pipe lengths needed to achieve the required heads using formulas for flowrate, velocity, friction factor, and head loss.
SINGULARITY METHOD (practical application) MOM
This document summarizes a group project analyzing the loading on an airplane floor beam. The group determined the shear force, bending moment, slope, and deflection along the beam due to a distributed load. They also calculated the reactions at the supports using equilibrium equations and the singularity method. Plots of the load, shear force, and bending moment diagrams were produced. Stress elements and Mohr's circle were also used to analyze the original stresses in the beam.
LIGHT DETECTOR USING NAND GATE
This project report describes building a light detector circuit using a NAND gate integrated circuit. The circuit uses a light dependent resistor (LDR) and resistors in a voltage divider configuration to produce different logic levels at the inputs of the NAND gate depending on light conditions. When dark, the LDR has high resistance and the NAND gate output is low, turning off an LED. When light, the LDR resistance drops and the NAND gate output goes high, powering the LED. The circuit exploits how an LDR's resistance changes with light to effectively detect light and dark conditions.
wind shield wiper assembly mechanism
This document summarizes a semester project to design a windshield wiper assembly mechanism. It includes the group members, describes the four bar linkage design using rods and links, and lists the main parts which are inexpensive and include nuts, bolts, glass, wipers and plywood. It also identifies stakeholders such as spare parts shops and carpenters, explains the product will be used during rain, snow or excessive dust, and that the design uses basic, inexpensive parts to be manufactured for vehicle windshields at low cost.
how to write presentation on industrial visit?
Fazal Steel (Pvt) Limited is a leading steel mill in Pakistan that produces reinforcing steel rebar. It has a production capacity of over 130,000 tons per year. The company sources scrap metal and uses electric arc and induction furnaces to melt the scrap and produce billets. It then uses a modern rerolling mill to convert the billets into reinforcing bars of various sizes. Fazal Steel has advanced quality control systems and tests to ensure its rebar meets standards for properties like tensile strength and elongation. It also has proper systems for storage, transportation, and environmental protection.
National Economic Council (NEC) of Pakistan
The National Economic Council (NEC) is constituted by the President of Pakistan according to the country's constitution. The NEC consists of the Prime Minister as chairman, chief ministers from each province, and four additional members nominated by the Prime Minister. The NEC reviews Pakistan's overall economic conditions and formulates financial, commercial, and economic plans to ensure balanced development across regions.
Pull pin security alarm
This document presents a project proposal for a pull pin security alarm system from HITEC University Taxila. The system contains components like capacitors, resistors, an oscillator, and a mini loudspeaker. It works by keeping the circuit inactive until the attached wallet is pulled from the pocket, detaching the pin and activating the circuit to sound the alarm. The circuit diagram and explanation of how it works are provided, along with a components list, working description of the oscillator, and conclusion about its security applications.
3d Model of “Bearing”
This 3 sentence summary provides the key details about the 3D model of a bearing created in AutoCAD:
The document outlines the steps taken to model a bearing in AutoCAD 3D 2007, including using lines, arcs, and regions to construct the shape, mirroring the model, revolving it around an axis, and arranging multiple copies in an array. Screenshots are included to show the final 3D model rendered with realistic shading.
BRIDGE DESIGN
This document summarizes a semester project to design a truss bridge using wooden sticks. A group of 5 students designed a bridge combining features of Bonhill and Whipple Arc bridges, using wooden sticks as materials. The bridge is 61 cm long, 14 cm high, and 11 cm wide. Force calculations were performed assuming the bridge would support a mass hanging at the center. Forces were calculated for each truss member, with some in compression and some in tension. A video was also taken to document the project.
CAUSES OF CREATION OF MUSLIM LEAGUE: HISTORY AND BACKGROUND:
1) The document discusses the various causes that led to the creation of the All India Muslim League in 1906, including the decline of the Mughal Empire, the 1857 war of independence, the establishment of the British system of government and the Indian National Congress.
2) It describes Sir Syyid Ahmed Khan's role in advocating for separate electorates and the Aligarh movement to promote education and political participation for Indian Muslims.
3) The partition of Bengal in 1905 and the resulting hostility between Hindus and Muslims is cited as a key cause, leading Muslim leaders to decide to form a common organization to represent Muslim interests.
REASONS OF UNSTABLE DEMOCRATIC SETUP IN PAKISTAN
There are many reasons for Pakistan's unstable democratic system, including internal and external factors. Internally, political instability stems from a lack of strong leadership, confrontations between government institutions, and poor relations between the central and provincial governments. Additional internal challenges include social, economic, and religious divisions within Pakistan. Externally, foreign interference and the country's strategic location have also undermined democratic stability.
six stroke engine
The document discusses six-stroke engines, which aim to improve fuel efficiency over traditional four-stroke engines. It outlines the history of six-stroke engine development since the 1880s. Key inventors included Samuel Griffin, Leonard Dyer, and Roger Bajulaz. Six-stroke engines capture waste heat from the combustion process to power an additional expansion and exhaust stroke. Designs use steam or air injection and can reduce fuel consumption by 40% while decreasing emissions. The document describes types like Beare Head and Bruce Crower engines, and analyzes the working principles, strokes, advantages, and applications of six-stroke technology.
More from abdullahkhalid50 (17)
mat lab code to display heat flow (Q) and Thermal resistance (‘R’)
mat lab code to display heat flow (Q) and Thermal resistance (‘R’)
Heat transfer area and Heat transfer cofficient (U)
Heat transfer area and Heat transfer cofficient (U)
mat lab code to display heat flow (Q) and Thermal resistance (‘R’) by varyin...
mat lab code to display heat flow (Q) and Thermal resistance (‘R’) by varyin...
CAUSES OF CREATION OF MUSLIM LEAGUE: HISTORY AND BACKGROUND:
CAUSES OF CREATION OF MUSLIM LEAGUE: HISTORY AND BACKGROUND:
Recently uploaded
Unit-III-ELECTROCHEMICAL STORAGE DEVICES.ppt
Batteries -Introduction – Types of Batteries – discharging and charging of battery - characteristics of battery –battery rating- various tests on battery- – Primary battery: silver button cell- Secondary battery :Ni-Cd battery-modern battery: lithium ion battery-maintenance of batteries-choices of batteries for electric vehicle applications.
Fuel Cells: Introduction- importance and classification of fuel cells - description, principle, components, applications of fuel cells: H2-O2 fuel cell, alkaline fuel cell, molten carbonate fuel cell and direct methanol fuel cells.
Understanding Inductive Bias in Machine Learning
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Modelagem de um CSTR com reação endotermica.pdf
Modelagem em função de transferencia. CSTR não-linear.
International Conference on NLP, Artificial Intelligence, Machine Learning an...
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
A review on techniques and modelling methodologies used for checking electrom...
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
Recycled Concrete Aggregate in Construction Part II
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Comparative analysis between traditional aquaponics and reconstructed aquapon...
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Recycled Concrete Aggregate in Construction Part III
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
Iron and Steel Technology Roadmap - Towards more sustainable steelmaking.pdf
Iron and Steel Technology towards Sustainable Steelmaking
学校原版美国波士顿大学毕业证学历学位证书原版一模一样
原版一模一样【微信：741003700 】【美国波士顿大学毕业证学历学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
哪里办理(csu毕业证书)查尔斯特大学毕业证硕士学历原版一模一样
原版一模一样【微信：741003700 】【(csu毕业证书)查尔斯特大学毕业证硕士学历】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Embedded machine learning-based road conditions and driving behavior monitoring
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Casting-Defect-inSlab continuous casting.pdf
Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting
Recently uploaded (20)
Engineering Drawings Lecture Detail Drawings 2014.pdf
Engineering Drawings Lecture Detail Drawings 2014.pdf
International Conference on NLP, Artificial Intelligence, Machine Learning an...
International Conference on NLP, Artificial Intelligence, Machine Learning an...
A review on techniques and modelling methodologies used for checking electrom...
A review on techniques and modelling methodologies used for checking electrom...
Recycled Concrete Aggregate in Construction Part II
Recycled Concrete Aggregate in Construction Part II
Comparative analysis between traditional aquaponics and reconstructed aquapon...
Comparative analysis between traditional aquaponics and reconstructed aquapon...
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
basic-wireline-operations-course-mahmoud-f-radwan.pdf
basic-wireline-operations-course-mahmoud-f-radwan.pdf
Recycled Concrete Aggregate in Construction Part III
Recycled Concrete Aggregate in Construction Part III
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
Iron and Steel Technology Roadmap - Towards more sustainable steelmaking.pdf
Iron and Steel Technology Roadmap - Towards more sustainable steelmaking.pdf
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Embedded machine learning-based road conditions and driving behavior monitoring
Embedded machine learning-based road conditions and driving behavior monitoring
Self powered door-bell watcher
- 1. TITLE PAGE HITEC UNIVERSITY TAXILA PROJECT PROPOSAL Fundamentals of Electrical Engineering Project: Self-powered Door-bell Watcher Group Members Muhammad Abdullah(15-ME-075) Jahenzaib Saleem(15-ME-015) Arslan Zafar(15-ME-019) Submitted To: Sir Tehseen DATE 8-04-2016
- 2. TITLE PAGE Parts: R1______________1K 1/4W Resistor R2____________220K 1/4W Resistor (Optional, see text) R3______________2K2 1/4W Resistor (Optional, see text) C1___________1000µF 25V Electrolytic Capacitor (See Notes) C2____________100nF 400V Polyester Capacitor (Optional, see text) D1__________1N4002 100V 1A Diode D2_____________5mm. Red LED P1_____________SPST Pushbutton BZ1___________Piezo sounder (incorporating 3 KHz oscillator) Introduction and Working: This very simple and self-powered device was conceived to allow a person to monitor if someone has rung his home door-bell when he was out. As most door-bells use 12Vac supply, the circuit must be simply connected to the two door- bell-coil leads. When the door-bell is activated, an ac voltage of about 10 - 16V is developed at its leads, so it is rectified by D1 and charges C1. Though this device was primarily intended to be used when a person leaves the house for a few hours or a week-end, a number of tests has proven that a minimum of 15 days "memory" can be guaranteed, even using cheap capacitor types. To know if the door-bell has rung, you must simply push P1: if the event occurred, LED D2 will illuminate and will fade slowly to the off-state in some seconds. This operation will reset the circuit also. The LED can be substituted or supported by a small Piezo sounder (incorporating 3 KHz oscillator) A small number of door-bells powered by 230 or 115Vac can be found. In this case, R2, R3 and C2 must be added to the input of the basic circuit, allowing about 15Vac to develop across R3, the voltage-drop provided by C2 reactance. The mains supply operation facility, allows further development of the circuit purposes.
- 3. TITLE PAGE In fact, almost any mains supplied apparatus can be monitored, e.g. household appliances, computers, radio and television sets, Hi-Fi systems, lamps etc., provided the circuit can be inserted after the main on-off switch. Precautions: The added high-voltage circuit formed by R2, R3 and C2 was designed for 230Vac operation. If your ac mains is rated at about 115V, you must change C2 value to 220nF 250V. No other changes are required. In most cases, a 470µF 25V value for C1 would suffice. Warning! If the circuit is connected to 230Vac mains, some parts in the circuit board can be subjected to lethal potential! Avoid touching the circuit when plugged and enclose it in a plastic box. Circuit Diagram:
- 4. TITLE PAGE Conclusion: Self-powered Door-bell Watcher is a very good device in our busy lives. This very simple and self-powered device was conceived to allow a person to monitor if someone has rung his home door-bell when he was out. In fact, almost any mains supplied apparatus can be monitored, e.g. household appliances, computers, radio and television sets, Hi-Fi systems, lamps etc., provided the circuit can be inserted after the main on-off switch Reference: www.redcircuits.com