Chapter 14. Transformers ISU EE. C.Y. Lee


 Brittany Blake
 1 years ago
 Views:
Transcription
1 Chapter 14 Transformers
2 Objectives Explain mutual inductance Describe how a transformer is constructed and how it works Explain how a stepup and down transformer works Discuss the effect of a resistive load across the secondary winding Discuss impedance matching with transformers Explain how the transformer acts as an isolation device Describe a tapped transformer 2
3 Mutual Inductance When two coils are placed close to each other, a changing electromagnetic field produced by the current in one coil will cause an induced voltage in the second coil because of the mutual inductance, L M 3
4 Coefficient of Coupling The coefficient of coupling (k) between two coils is the ratio of the lines of force (flux) produced by one coil linking the second coil (φ 12 ) to the total flux produced by the first coil (φ 1 ): φ k = 1 2 φ The coefficient of coupling depends on the physical closeness of the coils and the type of core material on which they are wound The formula for mutual inductance: L M = k L 1 L 2 1 4
5 The Basic Transformer Source voltage is applied to the primary winding The load is connected to the secondary winding 5
6 The Basic Transformer The core (air, ferrite or iron) provides a physical structure for placement of windings and a magnetic path so that the magnetic flux lines are concentrated close to the coils 6
7 Turns Ratio Turns ratio (n) is defined as the ratio of the number of turns in the secondary winding (N sec ) to the number of turns in the primary winding (N pri ) n = N N sec pri 7
8 Direction of Windings The direction of the windings determines the polarity of the voltage across the secondary winding with respect to the voltage across the primary 8
9 Direction of Windings Phase dots are used to indicate polarities 9
10 StepUp Transformers A transformer in which the secondary voltage is greater than the primary voltage is called a stepup transformer The ratio of secondary voltage (V sec ) to primary voltage (V pri ) is equal to the ratio of the number of turns in the secondary winding (N sec ) to the number of turns in the primary winding (N pri ) V V N N sec sec = = pri 10 pri n
11 StepUp Transformers Example: The transformer has a turns ratio of 3. What is the voltage across the secondary? V sec = (3/1)(120V) = 360 V 11
12 StepDown Transformer A transformer in which the secondary voltage is less than the primary voltage is called a stepdown transformer The amount by which the voltage is stepped down depends on the turns ratio The turns ratio of a stepdown transformer is always less than 1 12
13 StepDown Transformers Example: The transformer is part of a laboratory power supply and has a turns ratio of 0.2. What is the secondary voltage? V sec = (0.2)(120V) = 24 V 13
14 Primary Power Equals Load Power For an ideal transformer, the power delivered in the secondary equals the power in the primary In a real transformer, some power is dissipated in the transformer, so primary power is always greater than secondary power In an ideal transformer, power transfer is not related to the turns ratio P pri = V pri I pri = V sec I sec = P sec 14
15 Loading the Secondary Winding When a load resistor is connected to the secondary winding, there is a current through the resulting secondary circuit because of the voltage induced in the secondary coil This secondary current results in a primary current I I sec pri = N N pri sec 15
16 Loading the Secondary Winding Example: The two transformers have loaded secondaries. If the primary current is 100 ma in each case, what is the current through the load? (a) (b) I L = (1/10)(100mA) = 10 ma I L = (2/1)(100mA) = 200 ma 16
17 Reflected Load This reflected load is what the primary source effectively see, and it determines the amount of primary current The effective resistance that the primary sees is R pri = N N pri sec 2 R L = 1 n 2 R L 17
18 Reflected Load Example: What is the reflected resistance seen by the source R pri = (1/4) 2 (100Ω) = 6.25 Ω 18
19 Impedance Matching When a source is connected to a load, maximum power is delivered to the load when the load impedance is equal to the fixed internal source impedance 19
20 Matching Transformer One application of transformers is in the matching of a load resistance to a source resistance in order to achieve maximum transfer of power R 1 n 2 = 75 ( 300 ) pri R L = n = = 4 = 2 n 75 20
21 DC Isolation A transformer does not pass dc, therefore a transformer can be used to keep the dc voltage on the output of an amplifier stage from affecting the bias of the next amplifier The ac signal is coupled through the transformer between amplifier stages 21
22 Tapped Transformers The center tap (CT) transformer is equivalent to two secondary windings with half the voltage across each 22
23 Tapped Transformers Power company step down the high voltage from the power line to 100V/220V service for residential and commercial customers 23
24 Summary There is mutual inductance between two magnetically coupled coils When current in one coil changes, voltage is induced in the other coil The primary is the winding connected to the source, and the secondary is the winding connected to the load The number of turns in the primary and the number of turns in the secondary determine the turns ratio 24
25 Summary The relative polarities of the primary and secondary voltages are determined by the direction of the windings around the core A stepup transformer has a turns ratio greater than 1 A stepdown transformer has a turns ratio less than 1 In an ideal transformer, the power from the source (input power) is equal to the power delivered to the load (output power) If the voltage is stepped up, the current is stepped down, and vice versa 25
26 Summary A load across the secondary winding of a transformer appears to the source as a reflected load having a value dependent on the reciprocal of the turns ratio squared An impedancematching transformer can match a load resistance to an internal source resistance to achieve maximum power transfer to the load by selecting the proper turns ratio A typical transformer does not respond to dc 26
EE 221 Circuits II. Chapter 13 Magnetically Coupled Circuits
EE Circuits II Chapter 3 Magnetically Coupled Circuits Magnetically Coupled Circuits 3. What is a transformer? 3. Mutual Inductance 3.3 Energy in a Coupled Circuit 3.4 inear Transformers 3.5 Ideal Transformers
More informationElectrical Machines II. Week 1: Construction and theory of operation of single phase transformer
Electrical Machines II Week 1: Construction and theory of operation of single phase transformer Transformers Overview A transformer changes ac electric power at one frequency and voltage level to ac electric
More informationTransformer circuit calculations
Transformer circuit calculations This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,
More informationCoupled Inductors. Introducing Coupled Inductors
Coupled Inductors From power distribution across large distances to radio transmissions, coupled inductors are used extensively in electrical applications. Their properties allow for increasing or decreasing
More informationFor these various types, the electrical configurations that are available are:
RF Transformers RF transformers are widely used in lowpower electronic circuits for impedance matching to achieve maximum power transfer, for voltage stepup or stepdown, and for isolating dc from two
More information12. Transformers, Impedance Matching and Maximum Power Transfer
1 1. Transformers, Impedance Matching and Maximum Power Transfer Introduction The transformer is a device that takes AC at one voltage and transforms it into another voltage either higher or lower than
More informationApplication Note. So You Need to Measure Some Inductors?
So You Need to Measure Some nductors? Take a look at the 1910 nductance Analyzer. Although specifically designed for production testing of inductors and coils, in addition to measuring inductance (L),
More informationLecture 24. Inductance and Switching Power Supplies (how your solar charger voltage converter works)
Lecture 24 Inductance and Switching Power Supplies (how your solar charger voltage converter works) Copyright 2014 by Mark Horowitz 1 Roadmap: How Does This Work? 2 Processor Board 3 More Detailed Roadmap
More informationWhen we do not get specific resistor values we have to either use variable resistors such as
RESISTOR COMBINATIONS When we do not get specific resistor values we have to either use variable resistors such as potentiometers or presets to obtain such precise values. Pots are too expensive to use
More informationExtra Questions  1. 1. What current will flow in a 20Ω resistor when it is connected to a 50V supply? a) 0.4A b) 1.6A c) 2.5A
Extra Questions  1 1. What current will flow in a 20Ω resistor when it is connected to a 50V supply? a) 0.4A b) 1.6A c) 2.5A 2. A current of 500mA flows in a resistance of 12Ω. What power is dissipated
More informationLED level meter driver, 12point, power scale, dot or bar display
LED level meter driver, 12point, power scale, dot or bar display The is a monolithic IC for LED power meter applications. The display level range is 9mVrms to 380mVrms (Typ.) divided into 12 points with
More informationTransformers. AC Theory. Module
Module 11 AC Theory What you ll learn in Module 11. Section 11.1 Transformer Operation. Transformer Operation. Transformer Losses. Off Load Current. Volts per Turn. Section 11.2 Magnetic Circuits & Transformer
More informationMAGNETISM MAGNETISM. Principles of Imaging Science II (120)
Principles of Imaging Science II (120) Magnetism & Electromagnetism MAGNETISM Magnetism is a property in nature that is present when charged particles are in motion. Any charged particle in motion creates
More informationFunctions, variations and application areas of magnetic components
Westring 18 3314 Büren Germany T +49 951 60 01 0 F +49 951 60 01 3 www.schaffner.com energy efficiency and reliability 1.1 Transformers The transformer is one of the traditional components of electrical
More information2. A conductor of length 2m moves at 4m/s at 30 to a uniform magnetic field of 0.1T. Which one of the following gives the e.m.f. generated?
Extra Questions  2 1. A straight length of wire moves through a uniform magnetic field. The e.m.f. produced across the ends of the wire will be maximum if it moves: a) along the lines of magnetic flux
More informationMutual Inductance and Transformers F3 3. r L = ω o
utual Inductance and Transformers F3 1 utual Inductance & Transformers If a current, i 1, flows in a coil or circuit then it produces a magnetic field. Some of the magnetic flux may link a second coil
More information1. Title Electrical fundamentals II (Mechanics Repair and Maintenance)
1. Title Electrical fundamentals II (Mechanics Repair and Maintenance) 2. Code EMAMBG429A 3. Range The knowledge is needed for a wide range of aircraft repair and maintenance works,e.g. applicable to aircrafts,
More informationOutline. Systems and Signals 214 / 244 & Energy Systems 244 / 344. Ideal Inductor. Ideal Inductor (cont... )
Outline Systems and Signals 214 / 244 & Energy Systems 244 / 344 Inductance, Leakage Inductance, Mutual Inductance & Transformers 1 Inductor revision Ideal Inductor NonIdeal Inductor Dr. P.J. Randewijk
More informationThe Ideal Transformer. Description and Circuit Symbol
The Ideal Transformer Description and Circuit Symbol As with all the other circuit elements, there is a physical transformer commonly used in circuits whose behavior can be discussed in great detail. However,
More informationSeries and Parallel Circuits
Direct Current (DC) Direct current (DC) is the unidirectional flow of electric charge. The term DC is used to refer to power systems that use refer to the constant (not changing with time), mean (average)
More informationAn equivalent circuit of a loop antenna.
3.2.1. Circuit Modeling: Loop Impedance A loop antenna can be represented by a lumped circuit when its dimension is small with respect to a wavelength. In this representation, the circuit parameters (generally
More informationNZQA registered unit standard 20431 version 2 Page 1 of 7. Demonstrate and apply fundamental knowledge of a.c. principles for electronics technicians
NZQA registered unit standard 0431 version Page 1 of 7 Title Demonstrate and apply fundamental knowledge of a.c. principles for electronics technicians Level 3 Credits 7 Purpose This unit standard covers
More informationInstrument Transformers By: Kiran Kelapure
Yadav Measurements Pvt. Ltd. Instrument Transformers By: Kiran Kelapure A specifically designed programme for Da Afghanistan Breshna Sherkat (DABS) Afghanistan 1 Electricity Metering technologies and systems
More informationUnit 6 Transformers. Leadin. Basic principles. Task 1. Task 2. What applications of transformers do you know?
Unit 6 Transformers Leadin What applications of transformers do you know? Basic principles Task 1 Match the words and phrases with the translations. 1. magnetic field 2. induced voltage 3. conductors
More information1. E&M induction requires change, of the intensity of a magnetic field or of motion in a magnetic field.
Chapter 25 EXERCISE key 1. E&M induction requires change, of the intensity of a magnetic field or of motion in a magnetic field. 2. Magnetic induction will not occur in nylon, since it has no magnetic
More informationDC GENERATOR THEORY. LIST the three conditions necessary to induce a voltage into a conductor.
DC Generators DC generators are widely used to produce a DC voltage. The amount of voltage produced depends on a variety of factors. EO 1.5 LIST the three conditions necessary to induce a voltage into
More informationelectronics fundamentals
electronics fundamentals circuits, devices, and applications THOMAS L. FLOYD DAVID M. BUCHLA Lesson 1: Diodes and Applications CenterTapped Fullwave Rectifier The centertapped (CT) fullwave rectifier
More informationTRANSISTOR AMPLIFIERS AET 8. First Transistor developed at Bell Labs on December 16, 1947
AET 8 First Transistor developed at Bell Labs on December 16, 1947 Objective 1a Identify Bipolar Transistor Amplifier Operating Principles Overview (1) Dynamic Operation (2) Configurations (3) Common Emitter
More informationAC Generators. Basic Generator
AC Generators Basic Generator A basic generator consists of a magnetic field, an armature, slip rings, brushes and a resistive load. The magnetic field is usually an electromagnet. An armature is any number
More informationQuestion Bank. 1. Electromagnetism 2. Magnetic Effects of an Electric Current 3. Electromagnetic Induction
1. Electromagnetism 2. Magnetic Effects of an Electric Current 3. Electromagnetic Induction 1. Diagram below shows a freely suspended magnetic needle. A copper wire is held parallel to the axis of magnetic
More informationDC Circuits: Operational Amplifiers Hasan Demirel
DC Circuits: Operational Amplifiers Hasan Demirel Op Amps: Introduction Op Amp is short form of operational amplifier. An op amp is an electronic unit that behaves like a voltage controlled voltage source.
More informationDrive circuit basics + V. τ e. Industrial Circuits Application Note. Winding resistance and inductance
ndustrial Circuits Application Note Drive circuit basics For a given size of a stepper motor, a limited space is available for the windings. n the process of optimizing a stepper motor drive system, an
More informationExperiment A5. Hysteresis in Magnetic Materials
HYSTERESIS IN MAGNETIC MATERIALS A5 1 Experiment A5. Hysteresis in Magnetic Materials Objectives This experiment illustrates energy losses in a transformer by using hysteresis curves. The difference betwen
More informationChapter 11. Inductors ISU EE. C.Y. Lee
Chapter 11 Inductors Objectives Describe the basic structure and characteristics of an inductor Discuss various types of inductors Analyze series inductors Analyze parallel inductors Analyze inductive
More informationES250: Electrical Science. HW7: Energy Storage Elements
ES250: Electrical Science HW7: Energy Storage Elements Introduction This chapter introduces two more circuit elements, the capacitor and the inductor whose elements laws involve integration or differentiation;
More informationApplication Note on Transformers (AN20002)
Application Note on Transformers (AN20002) 1 Introduction The purpose of this application note is to describe the fundamentals of RF and microwave transformers and to provide guidelines to users in selecting
More informationChapter 7: AC Transistor Amplifiers
Chapter 7: AC Transistor Amplifiers The transistor amplifiers that we studied in the last chapter have some serious problems for use in AC signals. Their most serious shortcoming is that there is a dead
More informationTransformer Calculations
Transformer Calculations Transformers Transformers are one of the most basic yet practical devices used today. No matter where you are there is always a transformer nearby. They are used throughout alternatingcurrent
More informationBack to the Basics Current Transformer (CT) Testing
Back to the Basics Current Transformer (CT) Testing As test equipment becomes more sophisticated with better features and accuracy, we risk turning our field personnel into test set operators instead of
More informationPractice Problems  Chapter 33 Alternating Current Circuits
Multiple Choice Practice Problems  Chapter 33 Alternating Current Circuits 4. A highvoltage powerline operates at 500 000 Vrms and carries an rms current of 500 A. If the resistance of the cable is
More informationLine Reactors and AC Drives
Line Reactors and AC Drives Rockwell Automation Mequon Wisconsin Quite often, line and load reactors are installed on AC drives without a solid understanding of why or what the positive and negative consequences
More informationEDEXCEL NATIONAL CERTIFICATE/DIPLOMA UNIT 5  ELECTRICAL AND ELECTRONIC PRINCIPLES NQF LEVEL 3. OUTCOME 3  MAGNETISM and INDUCTION
EDEXCEL NATIONAL CERTIFICATE/DIPLOMA UNIT 5  ELECTRICAL AND ELECTRONIC PRINCIPLES NQF LEVEL 3 OUTCOME 3  MAGNETISM and INDUCTION 3 Understand the principles and properties of magnetism Magnetic field:
More informationDiode Applications. by Kenneth A. Kuhn Sept. 1, 2008. This note illustrates some common applications of diodes.
by Kenneth A. Kuhn Sept. 1, 2008 This note illustrates some common applications of diodes. Power supply applications A common application for diodes is converting AC to DC. Although halfwave rectification
More informationChapter 22: Electric motors and electromagnetic induction
Chapter 22: Electric motors and electromagnetic induction The motor effect movement from electricity When a current is passed through a wire placed in a magnetic field a force is produced which acts on
More informationFall 12 PHY 122 Homework Solutions #10
Fall 12 PHY 122 Homework Solutions #10 HW10: Ch.30 Q5, 8, 15,17, 19 P 1, 3, 9, 18, 34, 36, 42, 51, 66 Chapter 30 Question 5 If you are given a fixed length of wire, how would you shape it to obtain the
More informationLab 6: Transformers in parallel and 3phase transformers.
Lab 6: Transformers in parallel and 3phase transformers. Objective: to learn how to connect transformers in parallel; to determine the efficiency of parallel connected transformers; to connect transformers
More informationMotor Fundamentals. DC Motor
Motor Fundamentals Before we can examine the function of a drive, we must understand the basic operation of the motor. It is used to convert the electrical energy, supplied by the controller, to mechanical
More informationImpedance Matching. Using transformers Using matching networks
Impedance Matching The plasma industry uses process power over a wide range of frequencies: from DC to several gigahertz. A variety of methods are used to couple the process power into the plasma load,
More information7 Testing of Transformers
7 Testing of Transformers The structure of the circuit equivalent of a practical transformer is developed earlier. The performance parameters of interest can be obtained by solving that circuit for any
More informationStudent Name Instructor Name. High School or Vocational Center Grade. COMPETENCY RECORD FOR ARTICULATION Muskegon Community College Electronics
Student Name Instructor Name High School or Vocational Center Grade COMPETENCY RECORD FOR ARTICULATION Muskegon Community College Electronics Please check below each skill the student has mastered as described,
More informationRESONANCE AND FILTERS
14221 RESONANCE AND FILTERS Experiment 5, Current in a Parallel Resonant Circuit, For more courses visit www.ciewc.edu OBJECTIVES: 1. To verify by experiment, that the line current (I line ) is at its
More informationPOWER AMPLIFIERS 15.1 INTRODUCTIONDEFINITONS AND AMPLIFIER TYPES
POWER AMPLIFIERS 15.1 INTRODUCTIONDEFINITONS AND AMPLIFIER TYPES An Amplifier receives a signal from some pickup transducer or other input source and provides a larger version of the signal to some output
More informationDigital Energy ITI. Instrument Transformer Basic Technical Information and Application
g Digital Energy ITI Instrument Transformer Basic Technical Information and Application Table of Contents DEFINITIONS AND FUNCTIONS CONSTRUCTION FEATURES MAGNETIC CIRCUITS RATING AND RATIO CURRENT TRANSFORMER
More informationDCDC Converter Basics
Page 1 of 16 Free Downloads / Design Tips / Java Calculators / App. Notes / Tutorials / Newsletter / Discussion / Components Database / Library / Power Links / Software / Technical Articles / OnLine Textbook
More informationCircuits with inductors and alternating currents. Chapter 20 #45, 46, 47, 49
Circuits with inductors and alternating currents Chapter 20 #45, 46, 47, 49 RL circuits Ch. 20 (last section) Symbol for inductor looks like a spring. An inductor is a circuit element that has a large
More informationGenerator Stator Protection, under/over voltage, under /over frequency and unbalanced loading. Ramandeep Kaur Aujla S.NO 250447392
1 Generator Stator Protection, under/over voltage, under /over frequency and unbalanced loading By Ramandeep Kaur Aujla S.NO 250447392 ES 586b: Theory and applications of protective relays Department of
More informationAPPLICATION NOTE  017
APPLICATION NOTE  017 PWM Motor Drives Theory and Measurement Considerations Pulse Width Modulated (PWM) power electronic techniques represent a large and increasing proportion of modern power electronics.
More informationFull representation of the real transformer
TRASFORMERS EQVALET CRCT OF TWOWDG TRASFORMER TR Dots show the points of higher potential. There are applied following conventions of arrow directions: for primary circuit the passive sign convention
More informationINSTRUMENTATION AND CONTROL TUTORIAL 3 SIGNAL PROCESSORS AND RECEIVERS
INSTRUMENTATION AND CONTROL TUTORIAL 3 SIGNAL PROCESSORS AND RECEIVERS This tutorial provides an overview of signal processing and conditioning for use in instrumentation and automatic control systems.
More informationRF POWER AMPLIFIERS  TANK CIRCUITS & OUTPUT COUPLING
1 of 6 RF POWER AMPLIFIERS  TANK CIRCUITS & OUTPUT COUPLING by Lloyd Butler VK5BR The output tuning and coupling of the final RF amplifier is an important part of the transmitter. It is designed to load
More informationChapter 16. Current Transformer Design. Copyright 2004 by Marcel Dekker, Inc. All Rights Reserved.
Chapter 16 Current Transformer Design Table of Contents 1. Introduction 2. Analysis of the Input Current Component 3. Unique to a Current Transformer 4. Current Transformer Circuit Applications 5. Current
More informationR f. V i. ET 438a Automatic Control Systems Technology Laboratory 4 Practical Differentiator Response
ET 438a Automatic Control Systems Technology Laboratory 4 Practical Differentiator Response Objective: Design a practical differentiator circuit using common OP AMP circuits. Test the frequency response
More informationLab 8: DC generators: shunt, series, and compounded.
Lab 8: DC generators: shunt, series, and compounded. Objective: to study the properties of DC generators under noload and fullload conditions; to learn how to connect these generators; to obtain their
More informationCoupling Magnetic Signals to a SQUID Amplifier
SQUID Application Note 1050 Coupling Magnetic Signals to a SQUID Amplifier Matching the effective inductances of the Pickup Coil and the Input Coil to detect and couple magnetic flux maximizes the sensitivity
More informationSingle and Three Phase Transformer Testing Using Static Motor Circuit Analysis Techniques
Single and Three Phase Transformer Testing Using Static Motor Circuit Analysis Techniques Howard W. Penrose, Ph.D On behalf of ALLTEST Pro, LLC Old Saybrook, CT Introduction Field and shop testing of
More informationUnderstanding the Alternator
http://www.autoshop101.com THIS AUTOMOTIVE SERIES ON ALTERNATORS HAS BEEN DEVELOPED BY KEVIN R. SULLIVAN PROFESSOR OF AUTOMOTIVE TECHNOLOGY AT SKYLINE COLLEGE SAN BRUNO, CALIFORNIA ALL RIGHTS RESERVED
More informationTransmission Line Transformers
Radio Frequency Circuit Design. W. Alan Davis, Krishna Agarwal Copyright 2001 John Wiley & Sons, Inc. Print ISBN 0471350524 Electronic ISBN 0471200689 CHAPTER SIX Transmission Line Transformers 6.1
More informationEdmund Li. Where is defined as the mutual inductance between and and has the SI units of Henries (H).
INDUCTANCE MUTUAL INDUCTANCE If we consider two neighbouring closed loops and with bounding surfaces respectively then a current through will create a magnetic field which will link with as the flux passes
More informationTransformerIsolated Gate Driver Provides very large duty cycle ratios (HEXFET is the trademark for International Rectifier Power MOSFETs)
TransformerIsolated Gate Driver Provides very large duty cycle ratios (HEXFET is the trademark for International Rectifier Power MOSFETs) Transformer coupling of low level signals to power switches offers
More informationHigh voltage power supply (1 to 20 KV)
High voltage power supply ( to 0 KV) Ammar Ahmed Khan, Muhammad Wasif, Muhammad Sabieh Anwar This documentation is divided into two parts, the first part provides a brief overview about the key features
More informationTHE PERUNIT SYSTEM. (2) The perunit values for various components lie within a narrow range regardless of the equipment rating.
THE PERUNIT SYSTEM An interconnected power system typically consists of many different voltage levels given a system containing several transformers and/or rotating machines. The perunit system simplifies
More informationRevision Calcs. 1. The flux produced by a magnet is 10mWb. Determine the flux density if the area of the pole is 250 mm 2
EMA Revision Calcs Miller College Revision Calcs Revision Calcs 1. The flux produced by a magnet is 10mWb. Determine the flux density if the area of the pole is 250 mm 2 2. For the magnet in the previous
More informationChapter 14 Magnets and
Chapter 14 Magnets and Electromagnetism How do magnets work? What is the Earth s magnetic field? Is the magnetic force similar to the electrostatic force? Magnets and the Magnetic Force! We are generally
More informationTransformer Basics Information Guide
Property of Motion Laboratories, Inc. Transformer Basics Information Guide 2014 Motion Laboratories, Inc. Created By: Jim Herrick / Michael Shaw Approved By: Peter Herrmann Page: 1 Transformer Definition
More informationAN937 APPLICATION NOTE
APPLICATION NOTE One Technology Way P.O. Box 906 Norwood, MA 02062906, U.S.A. Tel: 78.329.4700 Fax: 78.46.33 www.analog.com Designing Amplifier Circuits: How to Avoid Common Problems by Charles Kitchin
More informationMAS.836 HOW TO BIAS AN OPAMP
MAS.836 HOW TO BIAS AN OPAMP OpAmp Circuits: Bias, in an electronic circuit, describes the steady state operating characteristics with no signal being applied. In an opamp circuit, the operating characteristic
More information45. The peak value of an alternating current in a 1500W device is 5.4 A. What is the rms voltage across?
PHYS Practice Problems hapters 8 hapter 8. 45. The peak value of an alternating current in a 5W device is 5.4 A. What is the rms voltage across? The power and current can be used to find the peak voltage,
More informationAPPLICATION NOTE 29 Testing Capacitors with High DC Bias
APPLICATION NOTE 29 Testing Capacitors with High DC Bias This application note will describe the process of analysing the impedance of a capacitor when subjected to high DC bias voltages. This particular
More informationEMI and t Layout Fundamentals for SwitchedMode Circuits
v sg (t) (t) DT s V pp = n  1 2 V pp V g n V T s t EE core insulation primary return secondary return Supplementary notes on EMI and t Layout Fundamentals for SwitchedMode Circuits secondary primary
More informationAC generator theory. Resources and methods for learning about these subjects (list a few here, in preparation for your research):
AC generator theory This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,
More informationChapter 3. Diodes and Applications. Introduction [5], [6]
Chapter 3 Diodes and Applications Introduction [5], [6] Diode is the most basic of semiconductor device. It should be noted that the term of diode refers to the basic pn junction diode. All other diode
More informationG019.A (4/99) UNDERSTANDING COMMON MODE NOISE
UNDERSTANDING COMMON MODE NOISE PAGE 2 OF 7 TABLE OF CONTENTS 1 INTRODUCTION 2 DIFFERENTIAL MODE AND COMMON MODE SIGNALS 2.1 Differential Mode signals 2.2 Common Mode signals 3 DIFFERENTIAL AND COMMON
More information9 2339A The Three Basics of Electric Circuits: Voltage, Current, and Resistance
PROGRESS RECORD Study your lessons in the order listed below. Electronics Technology and Advanced Troubleshooting I & II Number of Lessons: 118 Completion Time: 36 months 1 2330A Current and Voltage 2
More informationStepup, stepdown, and isolation transformers
Stepup, stepdown, and isolation transformers This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,
More informationCHAPTER 2B: DIODE AND APPLICATIONS. D.Wilcher
CHAPTER 2B: DIODE AND APPLICATIONS D.Wilcher 1 CHAPTER 2B: OBJECTIVES Analyze the operation of 3 basic types of rectifiers Describe the operation of rectifier filters and IC regulators Analyze the operation
More informationModule 22: Inductance and Magnetic Field Energy
Module 22: Inductance and Magnetic Field Energy 1 Module 22: Outline Self Inductance Energy in Inductors Circuits with Inductors: RL Circuit 2 Faraday s Law of Induction dφ = B dt Changing magnetic flux
More informationPROCEDURE: 1. Measure and record the actual values of the four resistors listed in Table 101.
The answer to two questions will help you identify a series or parallel connection: (1) Will the identical current go through both components? f the answer is yes, the components are in series. (2) Are
More information8 Speed control of Induction Machines
8 Speed control of Induction Machines We have seen the speed torque characteristic of the machine. In the stable region of operation in the motoring mode, the curve is rather steep and goes from zero torque
More informationHomework #11 20311721 Physics 2 for Students of Mechanical Engineering
Homework #11 20311721 Physics 2 for Students of Mechanical Engineering 2. A circular coil has a 10.3 cm radius and consists of 34 closely wound turns of wire. An externally produced magnetic field of
More informationPower Supplies. 1.0 Power Supply Basics. www.learnaboutelectronics.org. Module
Module 1 www.learnaboutelectronics.org Power Supplies 1.0 Power Supply Basics What you ll learn in Module 1 Section 1.0 Power Supply Basics. Basic functions of a power supply. Safety aspects of working
More informationMotors and Generators
Motors and Generators Electromechanical devices: convert electrical energy to mechanical motion/work and vice versa Operate on the coupling between currentcarrying conductors and magnetic fields Governed
More informationDIRECT CURRENT GENERATORS
DIRECT CURRENT GENERATORS Revision 12:50 14 Nov 05 INTRODUCTION A generator is a machine that converts mechanical energy into electrical energy by using the principle of magnetic induction. This principle
More informationProperties of electrical signals
DC Voltage Component (Average voltage) Properties of electrical signals v(t) = V DC + v ac (t) V DC is the voltage value displayed on a DC voltmeter Triangular waveform DC component Halfwave rectifier
More informationThevenin Equivalent Circuits (EC 4.10)
Thevenin Equivalent Circuits (EC 4.10) Thevenin equivalent Current delivered to any load resistance by a circuit is equal to: Voltage source equal to open circuit voltage V th at load n series with a simple
More informationOscillators. 2.0 RF Sine Wave Oscillators. www.learnaboutelectronics.org. Module. RF Oscillators
Module 2 www.learnaboutelectronics.org Oscillators 2.0 RF Sine Wave Oscillators What you ll Learn in Module 2 Section 2.0 High Frequency Sine Wave Oscillators. Frequency Control in RF Oscillators. LC
More informationIntroduction to Electricity & Magnetism. Dr Lisa JardineWright Cavendish Laboratory
Introduction to Electricity & Magnetism Dr Lisa JardineWright Cavendish Laboratory Examples of uses of electricity Christmas lights Cars Electronic devices Human body Electricity? Electricity is the presence
More informationPulsed Power Engineering Diagnostics
Pulsed Power Engineering Diagnostics January 1216, 2009 Craig Burkhart, PhD Power Conversion Department SLAC National Accelerator Laboratory Diagnostic Techniques and Considerations in Pulsed Power Systems
More informationTutorial Problems: Bipolar Junction Transistor (Basic BJT Amplifiers)
Tutorial Problems: Bipolar Junction Transistor (Basic BJT Amplifiers) Part A. CommonEmitter Amplifier 1. For the circuit shown in Figure 1, the transistor parameters are β = 100 and V A =. Design the
More informationChapter 4: DC Generators
Chapter 4: DC Generators Creating an AC Voltage The voltage produced in a DC generator is inherently AC and only becomes DC after rectification Consider an AC generator, consisting of a coil on the rotor
More informationChapter 10. RC Circuits ISU EE. C.Y. Lee
Chapter 10 RC Circuits Objectives Describe the relationship between current and voltage in an RC circuit Determine impedance and phase angle in a series RC circuit Analyze a series RC circuit Determine
More information