The document discusses various concepts related to electric circuits including:
- Ideal and non-ideal voltage and current sources and their characteristics
- Converting between voltage and current sources using Ohm's law
- Thevenin's and Norton's theorems for simplifying two-terminal circuits
- Superposition theorem for analyzing circuits with multiple sources
- Maximum power transfer occurring when load resistance equals source resistance
This document introduces a presentation on the superposition theorem and Norton's theorem given by six students: Mahmudul Hassan, Mahmudul Alam, Sabbir Ahmed, Asikur Rahman, Omma Habiba, and Israt Jahan. The superposition theorem allows analysts to determine voltages and currents in circuits with multiple sources by considering each source independently and then summing their effects. Norton's theorem represents a linear two-terminal circuit as an equivalent circuit with a current source in parallel with a resistor. The document provides examples of applying both theorems to solve circuit problems.
This document provides an overview of basic electrical concepts and circuit analysis for engineering students. It covers topics like voltage and current sources, Kirchhoff's laws, Thevenin's and superposition theorems, AC circuits including power calculations, and three-phase systems. The key points are:
1) It defines fundamental electrical terms and describes different types of sources and circuit analysis methods like mesh and nodal analysis.
2) Kirchhoff's laws are introduced for analyzing circuits using the concepts of current law and voltage law.
3) Thevenin's and superposition theorems are summarized as techniques for simplifying circuits with multiple sources.
4) Single-phase AC circuits are covered including definitions
- The document is an electrical and electronics laboratory manual containing instructions for various experiments.
- It includes two parts - Part A contains experiments related to basic circuit theorems like superposition, reciprocity, Thevenin's, Norton's theorems. Part B includes experiments on basic electronic components like PN junction, diode characteristics.
- The given experiment is about verifying Thevenin's and Norton's theorems for a given circuit. It describes the circuit diagram, theoretical background, procedure to determine equivalent Thevenin's voltage and resistance or Norton's current and resistance.
This document provides the list of experiments for an Electrical Circuits Laboratory Manual. It includes experiments on characteristics of PN junction diodes, Zener diodes, transistors, rectifiers, FETs, SCRs, and verification of Ohm's law, Kirchhoff's laws, Thevenin's theorem, Norton's theorem, superposition theorem, and maximum power transfer theorem. One experiment is described in detail for verifying Ohm's law, including the apparatus required, theory, procedure, sample calculations and results. The document also provides circuit diagrams for experiments verifying Kirchhoff's laws, Thevenin's theorem, and Norton's theorem.
The document discusses several network theorems including superposition, Thevenin's, and Norton's theorems. Superposition theorem states that the total response of a network with multiple sources is the sum of the responses of each source acting alone. Thevenin's theorem shows that any linear network can be reduced to an equivalent circuit with a voltage source and single output resistance. Norton's theorem represents a network as a current source and parallel output resistance. Both theorems simplify analysis of complex networks. Maximum power transfer occurs when the load and source resistances are equal.
This document provides an outline and overview of key concepts in alternating current (AC) circuits including:
1. AC sources and how AC voltage and current vary sinusoidally over time.
2. The behavior of resistors, inductors, and capacitors in AC circuits, including how their current and voltage are phase shifted.
3. Series RLC circuits and the concept of resonance where the current is at its maximum.
4. Power calculations in AC circuits and the power factor.
5. Transformers and how they are used for power transmission. Electrical filters are also discussed.
This document provides an overview of basic electrical and electronics engineering concepts. It begins by defining common units like the meter, kilogram, second, and ampere. It then discusses electric circuits, electromagnetism, and various instruments. Key concepts covered include Ohm's law, Kirchhoff's laws, series and parallel circuits, and the different characteristics of common circuit elements like resistors, voltage sources, and current sources. Measurement instruments are also introduced.
This document introduces a presentation on the superposition theorem and Norton's theorem given by six students: Mahmudul Hassan, Mahmudul Alam, Sabbir Ahmed, Asikur Rahman, Omma Habiba, and Israt Jahan. The superposition theorem allows analysts to determine voltages and currents in circuits with multiple sources by considering each source independently and then summing their effects. Norton's theorem represents a linear two-terminal circuit as an equivalent circuit with a current source in parallel with a resistor. The document provides examples of applying both theorems to solve circuit problems.
This document provides an overview of basic electrical concepts and circuit analysis for engineering students. It covers topics like voltage and current sources, Kirchhoff's laws, Thevenin's and superposition theorems, AC circuits including power calculations, and three-phase systems. The key points are:
1) It defines fundamental electrical terms and describes different types of sources and circuit analysis methods like mesh and nodal analysis.
2) Kirchhoff's laws are introduced for analyzing circuits using the concepts of current law and voltage law.
3) Thevenin's and superposition theorems are summarized as techniques for simplifying circuits with multiple sources.
4) Single-phase AC circuits are covered including definitions
- The document is an electrical and electronics laboratory manual containing instructions for various experiments.
- It includes two parts - Part A contains experiments related to basic circuit theorems like superposition, reciprocity, Thevenin's, Norton's theorems. Part B includes experiments on basic electronic components like PN junction, diode characteristics.
- The given experiment is about verifying Thevenin's and Norton's theorems for a given circuit. It describes the circuit diagram, theoretical background, procedure to determine equivalent Thevenin's voltage and resistance or Norton's current and resistance.
This document provides the list of experiments for an Electrical Circuits Laboratory Manual. It includes experiments on characteristics of PN junction diodes, Zener diodes, transistors, rectifiers, FETs, SCRs, and verification of Ohm's law, Kirchhoff's laws, Thevenin's theorem, Norton's theorem, superposition theorem, and maximum power transfer theorem. One experiment is described in detail for verifying Ohm's law, including the apparatus required, theory, procedure, sample calculations and results. The document also provides circuit diagrams for experiments verifying Kirchhoff's laws, Thevenin's theorem, and Norton's theorem.
The document discusses several network theorems including superposition, Thevenin's, and Norton's theorems. Superposition theorem states that the total response of a network with multiple sources is the sum of the responses of each source acting alone. Thevenin's theorem shows that any linear network can be reduced to an equivalent circuit with a voltage source and single output resistance. Norton's theorem represents a network as a current source and parallel output resistance. Both theorems simplify analysis of complex networks. Maximum power transfer occurs when the load and source resistances are equal.
This document provides an outline and overview of key concepts in alternating current (AC) circuits including:
1. AC sources and how AC voltage and current vary sinusoidally over time.
2. The behavior of resistors, inductors, and capacitors in AC circuits, including how their current and voltage are phase shifted.
3. Series RLC circuits and the concept of resonance where the current is at its maximum.
4. Power calculations in AC circuits and the power factor.
5. Transformers and how they are used for power transmission. Electrical filters are also discussed.
This document provides an overview of basic electrical and electronics engineering concepts. It begins by defining common units like the meter, kilogram, second, and ampere. It then discusses electric circuits, electromagnetism, and various instruments. Key concepts covered include Ohm's law, Kirchhoff's laws, series and parallel circuits, and the different characteristics of common circuit elements like resistors, voltage sources, and current sources. Measurement instruments are also introduced.
This document provides information on circuit theorems including linearity property, superposition theorem, source transformation, Thevenin's theorem, and Norton's theorem. It includes examples of applying each theorem to solve for voltages and currents in circuits. The maximum power transfer theorem is also discussed and an example is provided to determine the load resistance for maximum power transfer.
This document provides an outline and objectives for a chapter on alternating current (AC) circuits. The chapter will describe AC circuits and investigate the characteristics of simple series circuits containing resistors, inductors, and capacitors driven by sinusoidal voltage. It will also illustrate the functions of transformers, power transmission, and electrical filters. The key topics are: AC sources, resistors and phasors in AC circuits, inductors which cause current to lag voltage, capacitors which cause voltage to lag current, RLC series circuits, power in AC circuits including power factor, and resonance in RLC circuits where current is maximized. Students are assigned to redraw resonance curves using Excel and read sections on transformers and rectifiers/filters.
Ekeeda Provides Online Video Lectures, Tutorials & Engineering Courses Available for Top-Tier Universities in India. Lectures from Highly Trained & Experienced Faculty!
Ekeeda - First Year Enginering - Basic Electrical EngineeringEkeedaPvtLtd
The First Year engineering course seems more like an extension of the subjects that students have learned in their 12th class. Subjects like Engineering Physics, Chemistry, and Mathematics, are incorporated into the curriculum. Students will learn about some of the engineering subjects in this first year, and these subjects are similar to all the branches. Everyone will learn some basics related to the other streams in their first year. Ekeeda offers Online First Year Engineering Courses for all the Subjects as per the Syllabus.
This document discusses electric circuits and Ohm's law. It provides examples of calculating current, resistance, voltage, and power in both series and parallel circuits. Key points covered include:
- Ohm's law defines the relationship between voltage, current, and resistance in a circuit.
- Components in series experience the same current but their voltages add up. The total resistance is the sum of the individual resistances.
- Components in parallel experience the same voltage but their currents combine. The total resistance is lower than any individual resistance.
- Power is calculated as the product of voltage and current, and describes how much energy is used by components in a circuit.
Elec581 chapter 2 - fundamental elements of power eletronicsTarek Schehadeih
This document discusses fundamental concepts of power electronics including potential levels in circuits, voltage across circuit elements like switches, resistors, inductors and capacitors. It also covers diodes and their behavior as switches based on forward or reverse bias. Diode circuits like rectifiers and filters are described. Thyristors are then introduced as switches whose conduction can be controlled by a gate signal. Basic thyristor circuits include controlled rectifiers supplying passive or active loads.
This document discusses electric circuit diagrams and key circuit concepts:
1. Schematic diagrams use standardized symbols to represent electric circuits and their components.
2. A circuit provides a complete path for electric charges to move through electrical components like resistors, batteries, and switches.
3. Resistors connected in series have the same current, and their equivalent resistance is the sum of individual resistances. Resistors in parallel have the same potential difference and their equivalent resistance is calculated using an inverse relationship.
This document discusses the design of a three-phase current source inverter. It describes the main components of the current source inverter including a chopper circuit, inverter switching arrangement, and control circuit. Shift registers are used to generate six pulse signals with 60 degree phase shifts that are fed to the thyristors to produce the three-phase output. The current source inverter provides advantages over voltage source inverters like short circuit protection and simpler control circuits.
1 ph topic 8 resistors and inductors in seriesmattnlis
This document discusses a series RL circuit where a resistor and inductor are connected in series. It explains that the current through both components is the same, while the resistor voltage is in phase with the current and the inductor voltage leads the current by 90 degrees. It describes how to calculate circuit values like impedance, power factor, and voltages using phasor diagrams where the current is used as a reference. Changing conditions like frequency, resistance, or inductance will affect values like current, voltages, power, and power factor. Review questions are provided to test understanding.
Kirchhoff's laws describe the conservation of electric charge and energy in electrical circuits. There are two Kirchhoff's laws: 1) Kirchhoff's current law (KCL) states that the algebraic sum of currents in a network meeting at a point is zero. 2) Kirchhoff's voltage law (KVL) states that the directed sum of the potential differences around any closed network loop is zero. Mesh analysis and nodal analysis are methods used to solve planar circuits using KCL and KVL. Thevenin's theorem states that any linear electrical network can be reduced to an equivalent circuit of a voltage source in series with a resistor at its terminals.
The document discusses potentiometers and their use in measuring electrical quantities. It describes:
1) The construction and working of DC potentiometers including slide wire and Crompton types, and their applications in measuring resistance, calibrating voltmeters and ammeters.
2) The construction of AC potentiometers including in-phase and quadrature types, and their standardization process.
3) How potentiometers can be used to accurately measure small voltages and currents by balancing the unknown quantity against a known standard voltage.
Chapter 04.ppt dependent sources for electricalcbcbgdfgsdf
This chapter discusses dependent sources, which are sources whose output depends on another variable in the circuit. There are four types of linear dependent sources: voltage-controlled voltage source, voltage-controlled current source, current-controlled voltage source, and current-controlled current source. The chapter covers examples of using dependent sources, suppression of dependent sources for circuit analysis techniques like superposition, and determination of Thévenin and Norton equivalents for circuits containing dependent sources. Feedback connections between dependent sources and their controlling inputs are also discussed.
1. Power supplies convert the 240V AC mains supply into suitable DC voltages between 5-30V for electronic equipment through transformers, rectifiers, and regulators.
2. Transformers convert the AC voltage to a lower isolated AC voltage, which is then rectified to DC and smoothed by capacitors.
3. Various rectifier circuits like half-wave, full-wave, and bridge are used to rectify different portions of the AC cycle. Smoothing circuits use large capacitors to reduce ripple in the DC output.
4. Regulator circuits like zener diodes and integrated circuits are used to stabilize the output DC voltage against fluctuations in the input voltage and load. Heat sinks are required to dissip
This document provides an overview of circuit theory concepts including:
- Electric circuits are interconnections of electrical elements.
- Charge is the most basic quantity and is measured in coulombs. Current is the rate of charge flow measured in amperes.
- Voltage is the energy required to move a unit charge through a circuit element and is measured in volts.
- Power is the rate of energy use/production and is measured in watts.
- Circuit elements include passive (resistors, capacitors, inductors) and active (sources) components. Kirchhoff's laws and Ohm's law govern circuit analysis.
- Nodal and mesh analysis provide systematic techniques for analyzing circuits by
This document provides an overview of circuit theory concepts including:
- Electric circuits are interconnections of electrical elements.
- Charge is the most basic quantity and is measured in coulombs. Current is the rate of charge flow measured in amperes.
- Voltage is the energy required to move a unit charge through a circuit element and is measured in volts.
- Power is the rate of energy use/production and is measured in watts.
- Circuit elements include passive (resistors, capacitors, inductors) and active (sources) components. Kirchhoff's laws and Ohm's law govern circuit analysis.
- Nodal and mesh analysis provide systematic techniques for analyzing circuits by
- Power systems use transformers to transfer power between different voltage levels, ranging from 765 kV to 240/120 volts.
- An ideal transformer has no losses and perfect magnetic coupling between primary and secondary coils. Real transformers have losses and leakage flux.
- Transformer performance can be modeled using an equivalent circuit with resistances and inductances to represent winding losses, leakage effects, and core losses. The circuit parameters are determined from open and short circuit tests.
Experimental verification of network theorems, ugc practical physics s_paulspaul15
This document describes an experiment to verify several network theorems including Thevenin's theorem, Norton's theorem, superposition theorem, and the maximum power transfer theorem. The experiment uses a Wheatstone bridge circuit with resistors R1-R4 and a voltage source. Measurements are taken at various load resistances RL and graphs are plotted to experimentally determine the Thevenin resistance Rth, Thevenin voltage Vth, Norton current In, and maximum power transfer. Direct measurements are also taken and compared to theoretical calculations to verify the network theorems.
Thevenin norton and max power theorem by ahsanul hoqueAhsanul Talha
The document discusses Thevenin's theorem, Norton's theorem, and the maximum power transfer theorem. It provides:
1) Definitions and steps to derive the Thevenin and Norton equivalent circuits for a given linear two-terminal circuit by calculating the open-circuit voltage, short-circuit current, and input resistances.
2) Examples showing how to use source transformations to simplify circuits using these theorems.
3) An explanation of the maximum power transfer theorem - that maximum power is delivered to a load when its resistance equals the Thevenin resistance of the circuit.
This document discusses different types of voltage regulators. It describes linear regulators as either series or shunt types. Series regulators have the control element in series with the load, while shunt regulators have the control element in parallel. Switching regulators are more efficient than linear due to pulsed operation. Integrated circuit voltage regulators are also discussed, including fixed positive, fixed negative, and adjustable output types.
This document provides information on different electrical concepts including:
- Voltage, current, and resistance definitions.
- Electric power formula using voltage, current, energy, and time.
- Active and passive electronic components and their definitions.
- Ohm's law relating voltage, current, and resistance.
- Current and voltage division rules for circuits with parallel and series resistors.
- Ideal and non-ideal voltage and current sources and their characteristics.
- Examples of calculations using the concepts covered.
Basics of power system design.pdf for studentabdirahman gure
This document provides an overview of power system design principles and considerations for engineers. It discusses trends toward renewable energy integration, energy storage, demand response programs, and distributed generation. Basic principles of power system design include understanding present and future loads and structures, sources of power, distribution voltages, equipment, and utility requirements. The document outlines various components and analysis techniques used in power system design.
This document is an index for a book on protective relaying. It lists topics such as abnormal conditions, angle-impedance relays, arcs, attenuation, automatic reclosing, auxiliaries, back-up relaying, blind spots, blockers, broken-delta connections, bus protection, burdens, capacitor tripping, carrier-current attenuation, circuit breakers, circulating-current pilot relaying, cold-load pickup, compensation, contact definitions, conventions, corrosion, coupling capacitors, current balancing, current transformers, D-C offsets, differential relays, directional relays, distance relays, distribution protection, drop-out, electromagnetic relays, evaluation, failures, faults, frequency compensation,
This document provides information on circuit theorems including linearity property, superposition theorem, source transformation, Thevenin's theorem, and Norton's theorem. It includes examples of applying each theorem to solve for voltages and currents in circuits. The maximum power transfer theorem is also discussed and an example is provided to determine the load resistance for maximum power transfer.
This document provides an outline and objectives for a chapter on alternating current (AC) circuits. The chapter will describe AC circuits and investigate the characteristics of simple series circuits containing resistors, inductors, and capacitors driven by sinusoidal voltage. It will also illustrate the functions of transformers, power transmission, and electrical filters. The key topics are: AC sources, resistors and phasors in AC circuits, inductors which cause current to lag voltage, capacitors which cause voltage to lag current, RLC series circuits, power in AC circuits including power factor, and resonance in RLC circuits where current is maximized. Students are assigned to redraw resonance curves using Excel and read sections on transformers and rectifiers/filters.
Ekeeda Provides Online Video Lectures, Tutorials & Engineering Courses Available for Top-Tier Universities in India. Lectures from Highly Trained & Experienced Faculty!
Ekeeda - First Year Enginering - Basic Electrical EngineeringEkeedaPvtLtd
The First Year engineering course seems more like an extension of the subjects that students have learned in their 12th class. Subjects like Engineering Physics, Chemistry, and Mathematics, are incorporated into the curriculum. Students will learn about some of the engineering subjects in this first year, and these subjects are similar to all the branches. Everyone will learn some basics related to the other streams in their first year. Ekeeda offers Online First Year Engineering Courses for all the Subjects as per the Syllabus.
This document discusses electric circuits and Ohm's law. It provides examples of calculating current, resistance, voltage, and power in both series and parallel circuits. Key points covered include:
- Ohm's law defines the relationship between voltage, current, and resistance in a circuit.
- Components in series experience the same current but their voltages add up. The total resistance is the sum of the individual resistances.
- Components in parallel experience the same voltage but their currents combine. The total resistance is lower than any individual resistance.
- Power is calculated as the product of voltage and current, and describes how much energy is used by components in a circuit.
Elec581 chapter 2 - fundamental elements of power eletronicsTarek Schehadeih
This document discusses fundamental concepts of power electronics including potential levels in circuits, voltage across circuit elements like switches, resistors, inductors and capacitors. It also covers diodes and their behavior as switches based on forward or reverse bias. Diode circuits like rectifiers and filters are described. Thyristors are then introduced as switches whose conduction can be controlled by a gate signal. Basic thyristor circuits include controlled rectifiers supplying passive or active loads.
This document discusses electric circuit diagrams and key circuit concepts:
1. Schematic diagrams use standardized symbols to represent electric circuits and their components.
2. A circuit provides a complete path for electric charges to move through electrical components like resistors, batteries, and switches.
3. Resistors connected in series have the same current, and their equivalent resistance is the sum of individual resistances. Resistors in parallel have the same potential difference and their equivalent resistance is calculated using an inverse relationship.
This document discusses the design of a three-phase current source inverter. It describes the main components of the current source inverter including a chopper circuit, inverter switching arrangement, and control circuit. Shift registers are used to generate six pulse signals with 60 degree phase shifts that are fed to the thyristors to produce the three-phase output. The current source inverter provides advantages over voltage source inverters like short circuit protection and simpler control circuits.
1 ph topic 8 resistors and inductors in seriesmattnlis
This document discusses a series RL circuit where a resistor and inductor are connected in series. It explains that the current through both components is the same, while the resistor voltage is in phase with the current and the inductor voltage leads the current by 90 degrees. It describes how to calculate circuit values like impedance, power factor, and voltages using phasor diagrams where the current is used as a reference. Changing conditions like frequency, resistance, or inductance will affect values like current, voltages, power, and power factor. Review questions are provided to test understanding.
Kirchhoff's laws describe the conservation of electric charge and energy in electrical circuits. There are two Kirchhoff's laws: 1) Kirchhoff's current law (KCL) states that the algebraic sum of currents in a network meeting at a point is zero. 2) Kirchhoff's voltage law (KVL) states that the directed sum of the potential differences around any closed network loop is zero. Mesh analysis and nodal analysis are methods used to solve planar circuits using KCL and KVL. Thevenin's theorem states that any linear electrical network can be reduced to an equivalent circuit of a voltage source in series with a resistor at its terminals.
The document discusses potentiometers and their use in measuring electrical quantities. It describes:
1) The construction and working of DC potentiometers including slide wire and Crompton types, and their applications in measuring resistance, calibrating voltmeters and ammeters.
2) The construction of AC potentiometers including in-phase and quadrature types, and their standardization process.
3) How potentiometers can be used to accurately measure small voltages and currents by balancing the unknown quantity against a known standard voltage.
Chapter 04.ppt dependent sources for electricalcbcbgdfgsdf
This chapter discusses dependent sources, which are sources whose output depends on another variable in the circuit. There are four types of linear dependent sources: voltage-controlled voltage source, voltage-controlled current source, current-controlled voltage source, and current-controlled current source. The chapter covers examples of using dependent sources, suppression of dependent sources for circuit analysis techniques like superposition, and determination of Thévenin and Norton equivalents for circuits containing dependent sources. Feedback connections between dependent sources and their controlling inputs are also discussed.
1. Power supplies convert the 240V AC mains supply into suitable DC voltages between 5-30V for electronic equipment through transformers, rectifiers, and regulators.
2. Transformers convert the AC voltage to a lower isolated AC voltage, which is then rectified to DC and smoothed by capacitors.
3. Various rectifier circuits like half-wave, full-wave, and bridge are used to rectify different portions of the AC cycle. Smoothing circuits use large capacitors to reduce ripple in the DC output.
4. Regulator circuits like zener diodes and integrated circuits are used to stabilize the output DC voltage against fluctuations in the input voltage and load. Heat sinks are required to dissip
This document provides an overview of circuit theory concepts including:
- Electric circuits are interconnections of electrical elements.
- Charge is the most basic quantity and is measured in coulombs. Current is the rate of charge flow measured in amperes.
- Voltage is the energy required to move a unit charge through a circuit element and is measured in volts.
- Power is the rate of energy use/production and is measured in watts.
- Circuit elements include passive (resistors, capacitors, inductors) and active (sources) components. Kirchhoff's laws and Ohm's law govern circuit analysis.
- Nodal and mesh analysis provide systematic techniques for analyzing circuits by
This document provides an overview of circuit theory concepts including:
- Electric circuits are interconnections of electrical elements.
- Charge is the most basic quantity and is measured in coulombs. Current is the rate of charge flow measured in amperes.
- Voltage is the energy required to move a unit charge through a circuit element and is measured in volts.
- Power is the rate of energy use/production and is measured in watts.
- Circuit elements include passive (resistors, capacitors, inductors) and active (sources) components. Kirchhoff's laws and Ohm's law govern circuit analysis.
- Nodal and mesh analysis provide systematic techniques for analyzing circuits by
- Power systems use transformers to transfer power between different voltage levels, ranging from 765 kV to 240/120 volts.
- An ideal transformer has no losses and perfect magnetic coupling between primary and secondary coils. Real transformers have losses and leakage flux.
- Transformer performance can be modeled using an equivalent circuit with resistances and inductances to represent winding losses, leakage effects, and core losses. The circuit parameters are determined from open and short circuit tests.
Experimental verification of network theorems, ugc practical physics s_paulspaul15
This document describes an experiment to verify several network theorems including Thevenin's theorem, Norton's theorem, superposition theorem, and the maximum power transfer theorem. The experiment uses a Wheatstone bridge circuit with resistors R1-R4 and a voltage source. Measurements are taken at various load resistances RL and graphs are plotted to experimentally determine the Thevenin resistance Rth, Thevenin voltage Vth, Norton current In, and maximum power transfer. Direct measurements are also taken and compared to theoretical calculations to verify the network theorems.
Thevenin norton and max power theorem by ahsanul hoqueAhsanul Talha
The document discusses Thevenin's theorem, Norton's theorem, and the maximum power transfer theorem. It provides:
1) Definitions and steps to derive the Thevenin and Norton equivalent circuits for a given linear two-terminal circuit by calculating the open-circuit voltage, short-circuit current, and input resistances.
2) Examples showing how to use source transformations to simplify circuits using these theorems.
3) An explanation of the maximum power transfer theorem - that maximum power is delivered to a load when its resistance equals the Thevenin resistance of the circuit.
This document discusses different types of voltage regulators. It describes linear regulators as either series or shunt types. Series regulators have the control element in series with the load, while shunt regulators have the control element in parallel. Switching regulators are more efficient than linear due to pulsed operation. Integrated circuit voltage regulators are also discussed, including fixed positive, fixed negative, and adjustable output types.
This document provides information on different electrical concepts including:
- Voltage, current, and resistance definitions.
- Electric power formula using voltage, current, energy, and time.
- Active and passive electronic components and their definitions.
- Ohm's law relating voltage, current, and resistance.
- Current and voltage division rules for circuits with parallel and series resistors.
- Ideal and non-ideal voltage and current sources and their characteristics.
- Examples of calculations using the concepts covered.
Basics of power system design.pdf for studentabdirahman gure
This document provides an overview of power system design principles and considerations for engineers. It discusses trends toward renewable energy integration, energy storage, demand response programs, and distributed generation. Basic principles of power system design include understanding present and future loads and structures, sources of power, distribution voltages, equipment, and utility requirements. The document outlines various components and analysis techniques used in power system design.
This document is an index for a book on protective relaying. It lists topics such as abnormal conditions, angle-impedance relays, arcs, attenuation, automatic reclosing, auxiliaries, back-up relaying, blind spots, blockers, broken-delta connections, bus protection, burdens, capacitor tripping, carrier-current attenuation, circuit breakers, circulating-current pilot relaying, cold-load pickup, compensation, contact definitions, conventions, corrosion, coupling capacitors, current balancing, current transformers, D-C offsets, differential relays, directional relays, distance relays, distribution protection, drop-out, electromagnetic relays, evaluation, failures, faults, frequency compensation,
This document provides definitions for key terms used in the Code of Practice for the Electricity (Wiring) Regulations. It defines terms related to electrical wiring installations, components, safety measures and more. Some key definitions include:
- Appliance: A current-using device such as a luminaire, motor, or motorized drive.
- Bonding: The permanent joining of metallic parts to ensure electrical continuity and safely conduct any current.
- Circuit breaker: A device that can make, carry and break normal and abnormal currents such as short circuits.
- Danger: A risk of injury, loss of life or health from electrical shock, burns or other causes.
- Earth fault loop impedance:
Voltage is the amount of energy per charge available to move electrons from one point to another in a circuit and is measured in volts. Current is the rate of charge flow and is measured in amperes. Resistance is the opposition to current and is measured in ohms. Ohm's law relates these three quantities and can be used to calculate one when you know the values of the other two. Power is the rate of doing work and is measured in watts, which is joules per second.
1) The document discusses key concepts in electrical systems including systems, inputs/outputs, circuits, voltage, current, resistance, and measurement devices.
2) It defines important units like volts, amps, and ohms and describes metric prefixes for large and small units.
3) Safety tips are provided for working with electrical circuits including maintaining a clean workspace and knowing emergency procedures.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
This document provides an overview of electrical and electronic systems, quantities, units, and safety. It discusses:
1) Systems are groups of interrelated parts that perform a specific function via inputs and outputs. Electrical systems deal with electric power, electronic systems deal with signals.
2) Important units include the volt, ampere, ohm, watt, and engineering prefixes like milli, mega and giga. Metric conversions and rounding rules are also covered.
3) Circuit components like resistors, switches, and meters are described. Resistor color codes, variable resistors, and schematic symbols are discussed. Basic electric circuits, current, resistance and safety guidelines are summarized.
This document provides an introduction to digital logic design concepts. It defines analog and digital quantities, explaining that digital systems represent information using discrete binary values of 1s and 0s. The advantages of digital systems are ease of design, accuracy, programmability and reliability. Common digital components like logic gates, flip-flops, and integrated circuits are described. Fundamental logic functions such as arithmetic, comparison, encoding/decoding are also introduced.
GOOD HEATH AND SAFETY NOTE DO YOYE BEST STANDER OF YOUR WILL
GOOD HEATH AND SAFETY NOTE DO YOYE BEST STANDER OF YOUR WILL
GOOD HEATH AND SAFETY NOTE DO YOYE BEST STANDER OF YOUR WILLGOOD HEATH AND SAFETY NOTE DO YOYE BEST STANDER OF YOUR WILL
GOOD HEATH AND SAFETY NOTE DO YOYE BEST STANDER OF YOUR WILL
GOOD HEATH AND SAFETY NOTE DO YOYE BEST STANDER OF YOUR WILL
This document discusses how to connect the leads of a MEGGER device for a short circuit test on a power system with two conductors, a red and blue wire, installed in metallic conduit. The leads of the MEGGER should be connected between the red wire and the conduit, and between the blue wire and the conduit, to test each conductor individually for a short circuit to ground.
UNLOCKING HEALTHCARE 4.0: NAVIGATING CRITICAL SUCCESS FACTORS FOR EFFECTIVE I...amsjournal
The Fourth Industrial Revolution is transforming industries, including healthcare, by integrating digital,
physical, and biological technologies. This study examines the integration of 4.0 technologies into
healthcare, identifying success factors and challenges through interviews with 70 stakeholders from 33
countries. Healthcare is evolving significantly, with varied objectives across nations aiming to improve
population health. The study explores stakeholders' perceptions on critical success factors, identifying
challenges such as insufficiently trained personnel, organizational silos, and structural barriers to data
exchange. Facilitators for integration include cost reduction initiatives and interoperability policies.
Technologies like IoT, Big Data, AI, Machine Learning, and robotics enhance diagnostics, treatment
precision, and real-time monitoring, reducing errors and optimizing resource utilization. Automation
improves employee satisfaction and patient care, while Blockchain and telemedicine drive cost reductions.
Successful integration requires skilled professionals and supportive policies, promising efficient resource
use, lower error rates, and accelerated processes, leading to optimized global healthcare outcomes.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Understanding Inductive Bias in Machine LearningSUTEJAS
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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.
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2. An ideal voltage source
plots a vertical line on the
VI characteristic as shown
for the ideal 6.0 V source.
Voltage sources
Actual voltage sources
include the internal source
resistance, which can drop
a small voltage under load.
The characteristic of a non-
ideal source is not vertical.
Current
(A)
Voltage (V)
0
0
1
2
2
3
4
4 6
5
8 10
3. Voltage sources
A practical voltage source is drawn as an ideal source
in series with the source resistance. When the internal
resistance is zero, the source reduces to an ideal one.
RS
VS
+
4. Voltage sources
If the source resistance of a 5.0 V power supply
is 0.5 W, what is the voltage across a 68 W load?
Use the voltage-divider
equation:
L
L S
L S
68
5 V = 4.96 V
68 0.5
R
V V
R R
W
W W
RS
RL
VS
VOUT
+
5.0 V
0.5W
68 W
5. An ideal current source
plots a horizontal line on the
VI characteristic as shown
for the ideal 4.0 mA source.
Current sources
Practical current sources
have internal source
resistance, which takes some
of the current. The
characteristic of a practical
source is not horizontal.
Current
(A)
Voltage (V)
0
0
1
2
2
3
4
4 6
5
8 10
6. A practical current source is drawn as an ideal source
with a parallel source resistance. When the source
resistance is infinite, the current source is ideal.
Current sources
RS
IS
7. Current sources
If the source resistance of a 10 mA current source
is 4.7 kW, what is the voltage across a 100 W load?
Use the current-divider
equation:
S
L S
L S
4.7 k
10 mA = 9.8 mA
100 4.7 k
R
I I
R R
W
W W
RS
IS RL
100W
4.7 kW
10 mA
8. Source conversions
Any voltage source with an internal resistance can be
converted to an equivalent current source and vice-
versa by applying Ohm’s law to the source. The source
resistance, RS, is the same for both.
To convert a voltage source to a current source,
S
S
S
V
I
R
S S S
V I R
To convert a current source to a voltage source,
9. Current Sources
A battery supplies fixed voltage and the source current may
vary according to load. Similarly, a current source is one
where it supplies constant current to the branch where it is
connected and the voltage and polarity of voltage across it
may vary according to the network condition.
A
I
I
E
VS
4
3
7
I
KCL
Applying
A,
3
4
12V
I
V
12
2
1
2
W
10. Source Conversion
A Voltage source can be converted to a current source and vice
versa. In reality, Voltage sources has an internal resistance Rs
and current sources has a shunt resistance Rsh. In ideal cases,
Rs equal to 0 and Rsh equal to .
11. Source Conversion
For us to be able to convert sources, the voltage source must have a series
resistance and current source must have some shunt resistance.
Eg.
12. Superposition theorem
The superposition theorem is a way to determine
currents and voltages in a linear circuit that has
multiple sources by taking one source at a time and
algebraically summing the results.
What does the
ammeter read for
I2? (See next slide
for the method and
the answer).
+
-
-
+
-
+
R1 R3
R2
I2
VS2
VS1
12 V
2.7 kW 6.8 kW
6.8 kW
18 V
13. 6.10 kW
What does the ammeter
read for I2?
1.97 mA 0.98 mA
8.73 kW 2.06 mA
+
-
-
+
-
+
R1 R3
R2
I2
VS2
VS1
12 V
2.7 kW 6.8 kW
6.8 kW
18 V
0.58 mA
1.56 mA
1.56 mA
Source 1: RT(S1)= I1= I2=
Source 2: RT(S2)= I3= I2=
Both sources I2=
Set up a table of
pertinent information
and solve for each
quantity listed:
The total current is the algebraic sum.
14. Thevenin’s theorem states that any two-terminal,
resistive circuit can be replaced with a simple
equivalent circuit when viewed from two output
terminals. The equivalent circuit is:
Thevenin’s theorem
V
T
H
R
T
H
15. V
T
H
R
T
H
VTH is defined as
Thevenin’s theorem
RTH is defined as
the open circuit voltage between the two
output terminals of a circuit.
the total resistance appearing between
the two output terminals when all sources have been
replaced by their internal resistances.
16. Thevenin’s theorem
R
R
1
R2
R2 L
VS
VS
12 V
10 kW
68 kW
27 kW
Output terminals
What is the Thevenin voltage for the circuit? 8.76 V
What is the Thevenin resistance for the circuit? 7.30 kW
Remember, the
load resistor
has no affect on
the Thevenin
parameters.
17. Thevenin’s theorem
Thevenin’s theorem is useful for solving the Wheatstone
bridge. One way to Thevenize the bridge is to create two
Thevenin circuits from A to ground and from B to ground.
The resistance between point
A and ground is R1||R3 and the
resistance from B to ground is
R2||R4. The voltage on each
side of the bridge is found
using the voltage divider rule.
R3 R4
R2
RL
R1
VS
-
+
A B
18. Thevenin’s theorem
For the bridge shown, R1||R3 = and
R2||R4 = . The voltage from A to ground
(with no load) is and from B to ground
(with no load) is .
The Thevenin circuits for each of the
bridge are shown on the following slide.
165 W
179 W
7.5 V
6.87 V
R3 R4
R2
RL
R1
VS
-
+
A B
330W 390W
330W 330W
+15 V
150 W
19. Thevenin’s theorem
Putting the load on the Thevenin circuits and
applying the superposition theorem allows you to
calculate the load current. The load current is:
RL
A B
150 W
VTH VTH
RTH RTH
'
'
165W 179W
7.5 V 6.87 V
A B
VTH VTH
RTH RTH
'
'
165W 179W
7.5 V 6.87 V
1.27 mA
20. Norton’s theorem states that any two-terminal, resistive
circuit can be replaced with a simple equivalent circuit
when viewed from two output terminals. The
equivalent circuit is:
Norton’s theorem
RN
IN
21. Norton’s theorem
the output current when the output
terminals are shorted.
the total resistance appearing between
the two output terminals when all sources have been
replaced by their internal resistances.
IN is defined as
RN is defined as
RN
IN
22. Norton’s theorem
Output terminals
What is the Norton current for the circuit? 17.9 mA
What is the Norton resistance for the circuit? 359 W
R2
R1
RL
VS +
10 V
560W
820 W
1.0 kW
The Norton circuit is shown on the following slide.
24. Maximum power transfer
The maximum power is transferred from a source to a
load when the load resistance is equal to the internal
source resistance.
The maximum power transfer theorem assumes the
source voltage and resistance are fixed.
RS
RL
VS +
25. Maximum power transfer
What is the power delivered to the matching load?
The voltage to the
load is 5.0 V. The
power delivered is
RS
RL
VS + 50 W
50 W
10 V
2
2
L
L
5.0 V
= 0.5 W
50
V
P
R
W
26. Current source
Maximum power
transfer
Norton’s
theorem
Superposition
theorem
Transfer of maximum power from a source
to a load occurs when the load resistance
equals the internal source resistance.
A method for simplifying a two-terminal
linear circuit to an equivalent circuit with only
a current source in parallel with a resistance.
A device that ideally provides a constant value
of current regardless of the load.
Key Terms
A method for analysis of circuits with more
than one source.
27. Terminal
equivalency
Thevenin’s
theorem
Voltage source
A method for simplifying a two-terminal
linear circuit to an equivalent circuit with only
a voltage source in series with a resistance.
The concept that when any given load is
connected to two sources, the same load
voltage and current are produced by both
sources.
Key Terms
A device that ideally provides a constant value
of voltage regardless of the load.
28. Quiz
1. The source resistance from a 1.50 V D-cell is 1.5 W.
The voltage that appears across a 75 W load will be
a. 1.47 V
b. 1.50 V
c. 1.53 V
d. 1.60 V
RS
RL
VS
VOUT
+
1.5 V
1.5W
75 W
29. Quiz
2. The internal resistance of an ideal current source
a. is 0 W
b. is 1 W
c. is infinite
d. depends on the source
30. Quiz
3. The superposition theorem cannot be applied to
a. circuits with more than two sources
b. nonlinear circuits
c. circuits with current sources
d. ideal sources
31. Quiz
4. A Thevenin circuit is a
a. resistor in series with a voltage source
b. resistor in parallel with a voltage source
c. resistor in series with a current source
d. resistor in parallel with a current source
32. Quiz
4. A Norton circuit is a
a. resistor in series with a voltage source
b. resistor in parallel with a voltage source
c. resistor in series with a current source
d. resistor in parallel with a current source
33. Quiz
5. A signal generator has an output voltage of 2.0 V with no
load. When a 600 W load is connected to it, the output
drops to 1.0 V. The Thevenin resistance of the generator is
a. 300 W
b. 600 W
c. 900 W
d. 1200 W.
34. Quiz
6. A signal generator has an output voltage of 2.0 V with no
load. When a 600 W load is connected to it, the output drops
to 1.0 V. The Thevenin voltage of the generator is
a. 1.0 V
b. 2.0 V
c. 4.0 V
d. not enough information to tell.
35. Quiz
7. A Wheatstone bridge is shown with the Thevenin circuit
as viewed with respect to ground. The total Thevenin
resistance (RTH + RTH’) is
a. 320 W
b. 500 W
c. 820 W
d. 3.47 kW.
R3 R4
R2
RL
R1
VS
-
+
A B
1.0 kW 1.0 kW
1.0 kW 470W
100 W
VTH VTH
RTH RL RTH
'
'
36. Quiz
8. The Norton current for the circuit is
a. 5.0 mA
b. 6.67 mA
c. 8.33 mA
d. 10 mA
R2
R1
RL
VS +
10 V
1.0 kW
1.0 kW 1.0 kW
37. Quiz
9. The Norton resistance for the circuit is
a. 500 W
b. 1.0 kW
c. 1.5 kW
d. 2.0 kW
R2
R1
RL
VS +
10 V
1.0 kW
1.0 kW 1.0 kW
38. Quiz
10. Maximum power is transferred from a fixed source
when
a. the load resistor is ½ the source resistance
b. the load resistor is equal to the source resistance
c. the load resistor is twice the source resistance
d. none of the above