Cathodic protection dc voltage
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The document describes an AC cathodic protection base unit. It includes a 0-50 VDC to 1-5 VDC converter to monitor cathodic protection voltage, a current transducer to monitor current, and a 12 VDC power supply powered by a 110-220 AC input and protected by a 250mA fuse. The base unit allows for monitoring cathodic protection voltage and current.
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1- NEGATIVE SHUNT CLIPPER
2- Negative Shunt Clipper
-> The negative clipper has allowed to pass the positive half cycle of the input voltage and clipped the negative half cycle completely.
In such a circuit the diode acts as a closed switch for a negative input voltage (i.e. v < o) and as an open switch for a positive input voltage (i.e. v o) the output waveform of the circuit is the same as that of series negative clipper.
3- Negative shunt clipper with bias
-> In negative shunt biased circuit clipping take place during the negative half cycle only when the input voltage (v < v ).
The clipping level can be shifted up or down by varying the bias voltage (—v ). it will be interesting to know that if the polarity of the bias voltage is reversed.
Then the resulting circuits will be as shown in the entire signal below the voltage level vii has been clipped off in the diagram shown in next slide.
EXPERIMENT:- Aim :- to implement negative shunt clipper circuit using diode.
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Circuit diagram(In ppt)
Simulated circuit(In ppt)
simulated graph(In ppt)
Observation table(In ppt)
conclusion:- In the negative half cycle of the signal voltage is applied at that time diode is in reverse biased condition.
So we can observe that diode acts as open switch and there is zero voltage appear across rl.
All images are in ppt related to all topics.
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-> The negative clipper has allowed to pass the positive half cycle of the input voltage and clipped the negative half cycle completely.
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-> In negative shunt biased circuit clipping take place during the negative half cycle only when the input voltage (v < v ).
The clipping level can be shifted up or down by varying the bias voltage (—v ). it will be interesting to know that if the polarity of the bias voltage is reversed.
Then the resulting circuits will be as shown in the entire signal below the voltage level vii has been clipped off in the diagram shown in next slide.
EXPERIMENT:- Aim :- to implement negative shunt clipper circuit using diode.
Apparatus required:- Function generator.
Cathode ray oscilloscope.
Bread board.
Hookup wires.
Diodes.
Resistors.
Circuit diagram(In ppt)
Simulated circuit(In ppt)
simulated graph(In ppt)
Observation table(In ppt)
conclusion:- In the negative half cycle of the signal voltage is applied at that time diode is in reverse biased condition.
So we can observe that diode acts as open switch and there is zero voltage appear across rl.
All images are in ppt related to all topics.
THANK YOU
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This document summarizes a presentation on modeling and control of a gas metal arc welding (GMAW) system. [1] A proportional controller is proposed to maintain constant output welding voltage for the GMAW power supply. [2] A fuzzy-sliding mode controller is proposed for the wire feeding unit to keep the output welding current constant by adjusting the electrode feed rate. [3] Simulation results show the hybrid controller using these two controllers achieves better performance than a conventional PID controller in terms of rise time, settling time, and steady state error of the output current.
Base Unit Radio Peer-to-Peer Pump Control
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Ampco LED Gauge ID Light System
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電流臨界モード方式PFC制御回路の解説書
This document discusses the design of a power factor correction (PFC) circuit using critical conduction mode (CRM) control. It begins with an introduction to poor power factor in rectifying circuits and how PFC improves power factor. It then presents the application circuit using a TB6819AFG PFC controller IC. Key parameters are specified and the circuit operation is explained. Design steps are outlined to calculate component values to achieve the desired power factor ratio near unity.
Ibm system x_ups_guide_v1.6.0
This document provides a guide to IBM System x Uninterruptible Power Supply (UPS) units. It includes diagrams of outlet configurations and logical layouts for various UPS models ranging from tower to rack-mounted units. It also includes selectable line cords, run time specifications, and optional accessories for each UPS. Reference materials are provided with label ratings for power requirements of IBM servers, storage, and networking equipment to help size the appropriate UPS.
Ee2259 lab-manual
This document contains the syllabus and procedures for experiments in the Electrical Machines I Lab. The experiments focus on obtaining characteristics of DC machines like generators and motors, as well as transformers. Key experiments include open/load characteristics of DC generators and motors, efficiency tests, and open/short circuit tests for transformers. Precautions are outlined and tabular columns provided to record readings and calculate performance parameters like efficiency.
ee2259-lab-manual
This document contains the syllabus and procedures for experiments in the Electrical Machines I Lab. The experiments focus on obtaining characteristics of DC machines like generators and motors, as well as load tests to determine efficiency. Key experiments include open/load characteristics of DC generators and motors, Swinburne's test on DC shunt motors, and load tests to find efficiency of DC shunt and compound motors. Procedures provide connections, precautions and step-by-step methods for collecting data and analyzing results for each experiment.
Cd4093 bc
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Valve & Amplifier Design, EL34 (6CA7) Data, Mullard Valves
This document provides specifications and performance data for an output pentode vacuum tube rated for 25W of anode dissipation and intended for use in AC mains operated equipment. It includes operating conditions for various configurations including single-ended Class A amplifier, push-pull with distributed or fixed bias, and specifications for limits. Graphs show performance measurements for configurations like push-pull with varying anode and screen grid voltages.
Datasheet of 2SK2287
This document summarizes the specifications and characteristics of the 2SK2287 60V 20A N-channel enhancement type power MOSFET from Shindengen Electric. Key details include:
- It has a maximum drain-source voltage of 60V, continuous drain current of 20A, and total power dissipation of 40W.
- Electrical characteristics are provided such as a drain-source on-resistance of 0.035-0.045 ohms and gate threshold voltage of 1.0-2.0V.
- Graphs show characteristics such as transfer and output capacitances, safe operating area, and transient thermal impedance over time.
Vip Er22a
1. The document describes the VIPer22A, a low power offline SMPS primary switcher integrated circuit that combines a current mode PWM controller with a high voltage power MOSFET.
2. The VIPer22A has a wide input voltage range of 85-265V, output power capabilities of 7-20W, and a fixed switching frequency of 60kHz.
3. It features current mode control, undervoltage lockout, overtemperature protection, and can accommodate supply voltages from 9-38V on its VDD pin.
Datasheet of 2SJ374
1) The 2SJ374 is a 60V -20A P-channel enhancement type power MOSFET made by Shindengen Electric Mfg. Co. Ltd.
2) It has features such as 4V gate drive voltage, built-in Zener diode for gate protection, and avalanche resistance guaranteed up to -20A.
3) Its intended applications include DC/DC converters, non-isolated DC-DC converters, power management, and motor/solenoid drives for office equipment and mobile devices.
Pump control.with base radio
This diagram shows a power supply unit that converts 100-240 VAC input power to 12 VDC output power. It uses a 250mA fuse, 12 volt DC coil, and 10 amp AC contact to regulate the power and safely power a pump start relay. The overall unit provides protected and regulated 12 VDC power from a standard 100-240 VAC source.
Lm741
The document provides information on the LM741 operational amplifier from Fairchild Semiconductor. Some key points:
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- It has features such as short circuit protection, excellent temperature stability, internal frequency compensation, and a high input voltage range.
- The document provides detailed specifications, electrical characteristics, and performance graphs of the LM741 as well as packaging and ordering information.
Lecture trans bias_1
This document discusses transistor bias circuits. It explains that a transistor must be properly biased with a DC voltage in order to operate as a linear amplifier. A voltage divider bias circuit is then introduced as a practical method for establishing the DC operating point. The voltage divider uses two resistors connected from the positive supply to ground to set the base voltage. As long as the base current is small compared to the divider current, the base voltage will remain relatively constant. Graphs of transistor characteristics are also used to illustrate how the operating point is established on the load line between cutoff and saturation.
74 Lcx08
The document summarizes the 74LCX08 low voltage quad 2-input AND gate. It contains four 2-input AND gates with 5V tolerant inputs that can interface 5V systems to 3V systems. It is fabricated with advanced CMOS technology to achieve high speed operation while maintaining low power dissipation. Key features include 5V tolerant inputs, 2.3V-3.6V power supply specifications, 5.5ns max propagation delay, 10uA max supply current, and ESD and latch-up performance.
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Liquid Level Application - Site Survey
OleumTech Corporation provides industrial wireless automation solutions. The document discusses measuring tank height for their level transmitter products. It instructs that tank height should be measured from the installed face of the level transmitter at the top of the tank down to the bottom of the tank. The measurement captures the full height that the transmitter will need to measure to determine the liquid level within the tank.
Well head application overview copy
OleumTech provides wireless transmitters that can monitor oil and gas production facilities by transmitting sensor data like tank levels, pressures, temperatures, and flow rates to a central gateway unit. The transmitters are installed throughout the facility and can wirelessly transmit data from locations like oil and water tanks, separators, wellheads, and flowlines to help remotely monitor and manage the production process.
Well head application overview
This document provides a diagram of a gas production site. It shows various tanks and separators used to separate oil, gas, and water. Wireless transmitters throughout the site monitor and transmit data like levels, pressures, temperatures, and flows to a base unit gateway connected to an electronic flow measurement system. This allows for remote monitoring and measurement of production from the gas wells.
Upstream application overview and capabilites
This document describes a wireless monitoring system for an oil and gas wellhead. Wireless transmitters located throughout the production facility transmit levels, pressures, discrete values and temperatures to a wireless base unit. The base unit then transmits this data via serial Modbus RTU to an ABB control system. Digital outputs from the base unit are configured to open or close a sales valve based on process variables, providing high and high-high level alarm protection for the separator.
Underground water line pressure monitoring
The document describes a wireless man hole monitoring system. It uses a 6 element Yagi antenna to transmit data from sensors in man holes to a repeater and then to an Omni antenna on a server building. The system is powered by solar panels and uses analog transmitters and transducers to monitor water lines.
Tank Level to Base Radio with HMI and Long Distance Radio
This document provides pricing and component information for a wireless monitoring system. The system includes a 10-foot wireless dual float unit for $1696.80, a wireless AC 4-inch display and base unit enclosure for $2100, and various additional components like a 4-inch touch screen display, RS-485 and RS-232 Modbus connections, a 12VDC and 110VAC power supply, and optional antennas not included in the base pricing.
Tank point and continuous level to base radio and back haul
The document describes a wireless tank level monitoring system. A discrete or digital level transmitter on the tank transmits the local tank level data to a base unit display within 3000 feet. The base unit then transmits the tank level data to a field office using long haul radios for monitoring on a SCADA or touchscreen display.
Tank Level to DH2 and ABB Peering Analog Out to Allen Bradley
The document describes a wireless tank level monitoring system. Wireless transmitters attached to tanks transmit level readings to a DH2 gateway. The DH2 then sends the tank levels via long haul radio to a base unit. The base unit provides 4-20mA analog outputs of the tank levels to a programmable logic controller for monitoring and control.
Irrigation center pivot and water pump control
This document describes a wireless peer-to-peer pressure monitoring system between two base units. Base Unit 1 transmits pressure readings from a Wika Pressure Transducer via Yagi antenna to Base Unit 2. Base Unit 2 then uses the pressure readings to control a water pump at the pump house by outputting a 4-20mA signal based on the pressure levels. The system is powered by solar panels and batteries.
Hi Level Alarm to Base Unit to Red Lion with Alarm
The document is an electrical diagram showing a wireless high level alarm monitoring system. It includes an omni antenna, base unit, Modbus RTU RS485 interface, discrete transmitter, hi level alarm, interposing relay coil, 12VDC power supply, and 110VAC power supply. The system monitors hi level alarms wirelessly.
Tank level to dh2 and abb peering analog out to allen bradley
The document describes a wireless tank level monitoring system. Wireless transmitters attached to tanks transmit level readings to a DH2 gateway. The DH2 then sends the tank levels via long haul radio to a base unit. The base unit provides 4-20mA analog outputs of the tank levels to a programmable logic controller for monitoring and control.
Tank level to base radio with hmi and long distance radio
This document provides pricing and component information for a wireless monitoring system. The system includes a 10-foot wireless dual float unit for $1696.80, a wireless AC 4-inch display and base unit enclosure for $2100, and various additional components like a 4-inch touch screen display, RS-485 and RS-232 Modbus connections, a 12VDC and 110VAC power supply, and bulk mount and MDS antennas that are not included.
Tank point and continuous level to base radio and back haul
The document describes a wireless tank level monitoring system. A discrete or digital level transmitter on the tank transmits the local tank level data to a base unit display within 3000 feet. The base unit then transmits the tank level data to a field office using long haul radios for monitoring on a touch screen display.
Tank level to base radio and hmi
The Digital Level Transmitter on top of the tank wirelessly transmits tank product level data to the Base Unit. The Base Unit uses Modbus RTU communications to display the tank level on its 4-inch touch screen display. The Base Unit is powered by a 12 VDC power supply and communicates with the transmitter via an RS 485 Modbus connection.
Saltwater disposal overview copy
The document describes a base unit used for high level shutdown of salt water tanks. It uses digital and discrete transmitters to monitor tank levels and control valves. When tank levels reach a high point, interposing relays activate solenoid coils to close normally open valves and open normally closed valves to prevent overfilling. The system is powered by solar panels and batteries.
Multiple end nodes with analog out
The document describes a new wireless temperature monitoring system. Temperature transmitters located throughout multiple plant areas transmit temperature readings wirelessly to a new wireless gateway system. The gateway collects the individual 4-20mA temperature signals and transmits them to the PLC, replacing the existing wired system. The wireless system uses multiple base units and transmitter groups to monitor temperatures across four plant areas.
Hi Level Alarm to Base Unit to Red Lion with Alarm
The document is an electrical diagram showing a wireless high level alarm monitoring system. It includes an omni antenna, base unit, Modbus RTU RS485 interface, discrete transmitter, hi level alarm, interposing relay coil, 12VDC power supply, and 110VAC power supply. The system monitors hi level alarms wirelessly.
Base Unit AC CP
The document describes an AC cathodic protection base unit. It includes a 0-50 VDC to 1-5 VDC voltage regulator, a 12 VDC power supply, a current transducer, and a 250mA fuse to protect the unit. The base unit steps down the AC voltage input to power the internal components and regulates the DC output voltage to protect structures.
Tank level to base radio and hmi copy two
The Digital Level Transmitter located on top of the tank transmits tank product level data wirelessly to the Base Unit. The Base Unit then uses Modbus RTU communications to display the tank level data on a local 4-inch touch LCD display. Power is supplied to the display via the Base Unit's 12VDC power connector.
Tank Level to Base Radio and HMI Copy
A digital level transmitter on top of a tank wirelessly transmits tank product level data to a base unit located up to 3000 feet away. The base unit has a 4-inch touch screen display that shows the tank level using Modbus RTU serial communications.
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Tank Level to Base Radio with HMI and Long Distance Radio
Tank Level to Base Radio with HMI and Long Distance Radio
Tank point and continuous level to base radio and back haul
Tank point and continuous level to base radio and back haul
Tank Level to DH2 and ABB Peering Analog Out to Allen Bradley
Tank Level to DH2 and ABB Peering Analog Out to Allen Bradley
Hi Level Alarm to Base Unit to Red Lion with Alarm
Hi Level Alarm to Base Unit to Red Lion with Alarm
Tank level to dh2 and abb peering analog out to allen bradley
Tank level to dh2 and abb peering analog out to allen bradley
Tank level to base radio with hmi and long distance radio
Tank level to base radio with hmi and long distance radio
Tank point and continuous level to base radio and back haul
Tank point and continuous level to base radio and back haul
Hi Level Alarm to Base Unit to Red Lion with Alarm
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【业务选择办理准则】
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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
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Cathodic protection dc voltage
- 1. OleumTech AC Cayhodic Protection Base Unit Drawn By: SIZE FSCM NO DWG NO REV EBM A SCALE NTS 06/14/11 SHEET 0 OF 0 Base Unit 250mA Fuse 0-50 VDC to 1-5 VDC !2 VDC Power Supply CP DC VOLTAGE 110-220 AC Current Transducer