CHAPTER THREE DIODE RECTIFIERS

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "CHAPTER THREE DIODE RECTIFIERS"

Transcription

1 CHATE THEE DODE ECTFES 3. Single-hase Half Wave ectifier: Single phase half-wave rectifier is the simplest circuit, this circuit is not used in precise practical applications due to high voltage ripples, and low efficiency. Therefore discussing this circuit aims to compare further electrical circuits with this circuit. erformance arameters : 3... Half Wave ectifier: The electrical circuit is shown in fig.3.-a, where a resistive load is energized throughout this rectifier, and the waveforms obtained from this circuit is illustrated on fig.3.-b fig.3.-a: Electrical circuit

2 Fig.3.-b: Circuit waveforms( source voltage, output voltage, and load current) As well shown from the figure the diode will conduct only for the positive half wave of the supply voltage, during the negative half wave the diode is in reverse biasing and there is no output voltage. During the negative half wave the source voltage is applied across the diode, therefore the diode must carry the peak value of the source voltage. There are different types of rectifier circuits and the performances of a rectifier are normally evaluated in terms of the following parameters:. The average value of the output ( load) voltage dc, and current dc: T sin( ω t) dω t. The rms value of the output ( load) voltage rms, and current rms: rms T ( sin ωt) dωt rms rms 3. The load average and rms power: These are the power energized the load in form of (average) and AC (effective) values. Usually the effective value is greater than the average value due to output waveform shape.

3 AC MS.. MS 4. The ectifier Efficiency : This parameter characterized the ratio between the average and effective power, and depends on the rectifier type and configuration: η 5. The Transformer Utilization: This parameter characterized the ratio between the average power and transformer secondary ( source) volt-ampere rating ( A)rating, and characterized the ratio between average output power and the appearance power energized the system ( transformer, rectifier, and load): TUF Where (A) rating s.s, s the secondary ( source) rms voltage, sms : the secondary rms current. (A 6. The Form Factor: This parameter characterized the ratio between the rms and average voltage (the physical mean of this parameter is the difference between the root mean square of the signal shape and the average value of this shape, therefore if the shape has pure dc value, there is no difference and FF. FF 7. The ipple Factor: This parameter characterized the difference between the ac component of the output voltage and dc component of the same voltage : MS ) MS rating F AC MS FF 8. The Harmonic Factor: This is a measure of the distortion of a waveform, which characterized the difference between the total rms ac current ( secondary current s) and fundamental component of ac source current, which can be defined by decomposing the secondary current into Fourier series ( Harmonics Specter): HF S S S n the case of pure sinusoidal source current ss, therefore HF. S S

4 9. The Displacement angle: This parameter characterized the angle(φ) between the fundamental current s and the source voltage : DF cos φ. The ower Factor: This parameter defines the input power factor: F S.S S.cos φ cos φ S.S S As well mentioned in the F equation the input power factor depends on the load character and on the source current shape.. The Crest factor: This parameter defines the measure of the peak input current (S) peak as compared with its rms value S: (S) CF S peak Example 3.: Single phase rectifier has a purely resistive load of W, energized by voltage source of throughout two windings transformer with ratio :. Determine: - the average and rms voltage and current - the efficiency, TUF, 3- FF, F, and the peak voltage across the diode (). 4- the CF, and the input F. Solution:. The average and MS voltage and current: ; A rms rms rms A. The efficiency and TUF:. η AC MS.MS TUF ( A ) rating where s MS s.s A % 4. 5 %

5 3. The FF, F, and MS FF F FF s. The CF, and input F %. ( S) peak CF S ac F ( A ) rating / S S. S lag S S / S.cos φ. S.5 /.5.77 / Summary: Taking into account the obtained rectifier parameters we conclude that this type rectifier characterized with bad parameters presented by :. Low ( poor) transform utilization 8.6%, which means that the transformer must be / times larger that when it is used to deliver power from a pure ac voltage.. Low ( poor) rectification efficiency 4.5% 3. resence of current dc component in the secondary current causing additional losses ( winding and core heating). 4. High ripples % greater than that when the source is pure dc 5. High ripple factor, which means that a filter with large capacitance is required for smoothing the output voltage, therefore this yield high capacitor starting current problem. Therefore this type rectifier is rarely used due to the weakness in quality of it's power and signal parameters The effect of freewheeling diode on the output voltage: When a rectifier energized L load, the conduction period of the diode D will extend beyond 8 o until the current becomes zero at wtp+f. Figure 3. illustrates the electrical circuit consist of L load ( W, LmH) ( fig.3.a), and the obtained simulation performance of the waveforms ( s, o, s) where it's shown the diode will conduct for the time of p+f.

6 (a) The diode conduction for ms+φ Fig.3.: Electrical circuit(a) and the circuit waveforms. As well shown from the previous figures it's noted that the diode will conduct in the negative half cycle for the time of F, therefore the average output voltage decreases due to load inductance. The average voltage taking into account F can be expressed as follows: φ tan T + φ ω L. sin( ω t) d ω t ( + cos φ ), As q increases, the output average voltage decreases, which the main drawback of existing inductance in the rectifier circuit. Avoiding this drawback requires connecting a freewheeling diode Dm across the load as well shown on fig.3.3(a,b) where the negative portion of the output voltage is eliminated, and the result is keeping the average voltage at the rated value despite of the existing of L load.

7 Fig.3.3-a: Electrical circuit with L load. The diode conduction for ms+φ The diode conduction for ms only. Fig.3.3-b: Circuit waveform The effect of back voltage ( charger) the circuit performance: When the rectifier energized Charging circuit with back voltage E, the conduction period of the diode D will be less than half period (d <p) depending on the back voltage value. n this case the diode will conduct when s > E. Figure 3.4 illustrates the electrical circuit energized battery charger with resistance play the role of current limiter( fig.3.4a), and the obtained simulation performance of the waveforms ( s, o, s) where it's shown the diode will conduct for the time of d. The front angle a and back angle b depends on the peak value of the secondary voltage and back voltage. The diode D will turned off when s< E. Fig.3.4-a: Electrical charging circuit ( principle).

8 The diode conduction angle δ Back angle β Front angle α Fig.3.4-b: Circuit waveforms The values of a, b and d are defined as follows: E α sin ; β α ; δ β α. The charging current can be expressed : s E.sinωt E io for α<ωt <β. Example 3.: The battery voltage of fig.3.4a is E4 and its capacity is Wh. The average charging current be dca. The primary input voltage is p4, 5Hz, and the transformer has a turn ratio of n:. Calculate: (a) the conducting angle d of the diode, (b) the current-limiting resistance, (c) the power rating of, (d) the charging time ho in hours, (e) the rectifier efficiency h, and (f) the of the diode. Solution: E, p, sp/n4/, and s 69.7, (a) the conducting angle d of the diode: α sin E sin ;

9 β α δ (b) the average charging current : β. sin ω t E d ω t, α ( cos α + E α E ). ( cos α + E α E ).. ( 69.7 COS (8.3 ) Ω ) (c) the power rating of,. MS MS β.sin ωt E α + E dωt α ( ) + sin α 4.E.cos α A + 4 (.4) sin cos W (d) the charging time h O in hours: E. 44W h W; ho h / / hrs. (e) the rectifier efficiency h: (f) the of the diode: η % +E

10 Summary: Taking into account the obtained rectifier parameters we conclude that :. The conducting time of the diode is less than p. Low ( poor) rectification efficiency 33.34% due to small conducting time 3. Great heating losses due to current limiting resistance 4. The diode must carry total voltage > in reverse biasing Single-hase Full Wave ectifier: Single phase Full-wave rectifier is the popular circuit, applied in most industrial application due to good rectifier parameters. There are two types rectifiers - Full- wave center tap rectifier ( Midpoint) - Full- Wave bridge rectifier (Gretz) circuit. Both circuit characterized with identified rectifier parameters, except the secondary current, efficiency and diode voltage. erformance arameters : Full-Wave Center tap rectifier The electrical circuit is shown on fig.3.5-a, where a resistive load is energized throughout this rectifier, and the waveforms obtained from this circuit are illustrated on fig.3.5-b. Fig.3.5-a: Electrical circuit Each diode will conduct for half period ( D- positive cycle, D negative cycle). The output voltage of full wave rectified with less ripples. As well shown from the illustrated waveforms on fig.3.5-b, the output rectified voltage has a unidirectional form among the full period, also the voltage applied across the diode is twice the source value.. The average value of the output ( load) voltage dc, and current dc:. T sin( ω t) dω t.6366

11 Fig.3.5-b: Electrical circuit Fig.3.5-b: Electrical circuit. The rms value of the output ( load) voltage rms, and current rms: rms rms T rms ( sin ωt) dωt S Example 3.3: Single phase center tape rectifier with the Ω resistive load,, : transformer ratio. Determine: - the average and rms voltage and current - the efficiency, TUF, 3- FF, F, and the peak voltage across the diode (). 4- the CF, and the input F.

12 Solution:. The average and MS voltage and current: rms rms rms A. A.3 ;. The efficiency and TUF: η AC TUF (A ) where s MS MS.. rating / s.s MS A. 8 % 57.3% 3. The FF, F, and FF F MS FF %. s The diode average and rms current and DA D ( m sin ω t) s. m sin ωt dωt dωt MS 5. The CF, and input F (S) CF F peak S ac (A ) rating / MS /.77 lag. / /. S.S S.cos φ. S.S S / /

13 Summary: Taking into account the obtained rectifier parameters we conclude that the rectifier parameters has been improved comparing with previous case, but not all as follows:. Low transform utilization 57.3%, which means that the transformer must be / times larger that when it is used to deliver power from a pure ac voltage.. good rectification efficiency 8% 3. No dc component in the secondary current, therefore no additional losses in the transformer core. 4. Acceptable ripples % greater than that when the source is pure dc 5. Acceptable ripple factor 48%. 6. The diode must carry twice voltage in the backward biasing, which the main drawback of this type rectifier. 7. Overcoming of this drawback and improving the transformer utilization, force us to use Full-wave bridge rectifier, as well going to be described hereinafter Full-Wave Bridge rectifier The electrical circuit is shown in fig.3.6-a, where a resistive load is energized throughout this rectifier, and the waveforms obtained from this circuit are illustrated on fig.3.6-b fig.3.6-a: Electrical circuit

14 fig.3.6-b: The main waveforms ( s,o, s). fig.3.6-c: The diode waveforms ( d, d), and load current o. With purpose to evaluate the harmonic spectrum of the output voltage, and how can the higher order harmonics can be predicted or fully eliminated, an example is going to be described as follows: Example 3.4: Finding the Fourier Series of the Output oltage for a Full-Wave ectifier energizing -L load. Let s, Ω, LmH. Determine: - determine the mathematical expression of the output voltage - the percentage value of the highest order harmonics. Solution: The rectifier output voltage may be described by a Fourier Series as follows: - The Fourier series: o (t) + n,4,.. (A n.cos nω t + B n sin nω t),

15 where: o (t ) d ( ω t).sin ω t d ( ω t) The Fourier coefficients can be found as follows: A n o. cos n ω t d ( ω t ). cos n ω t d ( ω t ) 4 for n, 4,6,.. n, 4 ( n )( n + ) for n,3,5,... B n o. sin n ωt d ( ω t ). sin n ω t d ( ω t ). Substituting the values of An and Bn, the expression for the output voltage is: o (t) cos ω t cos 4ω t cos 6ω t The percentage values.. There are even harmonic numbers only nd order harmonic is : o 3 3 o o % This means that this harmonic is characterized with great negative effect and leads to additional large losses and waveform deformation. The harmonic speed ( angular frequency) ω ( f) rad/s Which means that the harmonic frequency is twice the rated i.e. f fs Hz. 4 nd order harmonic is : o o o 4 % % The negative effect of this harmonic is negligible comparing with previous one. The harmonic speed ( angular frequency) ω 4( f) rad/s, which means that the harmonic frequency is 4 times the rated i.e. f44 fs Hz. Now the issue is to eliminate ( reduce) the effect of the strongest harmonic which is in our case the fourth one. This could be realized by connecting filtering circuit with C filter as shown on fig.3.7a: % Fig.3.7a: Single phase full wave rectifier with C- filter

16 Fig.3.7b: The obtained waveforms illustration the capacitor effect on the output voltage and load current. As well shown from fig3.7c, the magnitude of nd harmonic has been reduced to 4, which equals to 5.4% from the fundamental one. Fig.3.7c: The Fourier analysis of the output voltage Full-Wave Bridge rectifier with L & EMF: Bridge rectifier energized L load with back induced voltage E is illustrated on fig.3.8a, where the load current flows when the supply voltage being greater than the back voltage E. The circuit waveform are illustrated on fig.3.8b. The load current has discontinuous character due to the value of back emf E.

17 Fig.3.8-a: Bridge rectifier energized -L-E load Fig.3.8-b: Circuit waveforms ( s, o, o). By increasing the back induced voltage, the conducting time of the diode decreases with reduced magnitude as well shown on fig.3.8-c.

18 Fig.3.8-c: Circuit waveforms ( s, o, o) for L load with back emf. At the same time keeping E at constant value, increasing the load inductance leads to further deformation in the output voltage and current as well shown on fig3.8d. Fig.3.8-d: Circuit waveforms ( s, o, o) with high inductive load and back emf..

19 Summary: n general Full wave rectifier is characterized with enhanced parameters as follows :. High transform utilization 8%, which means that the transformer must be /.8.3 times larger that when it is used to deliver power from a pure ac voltage.. good rectification efficiency 8% 3. No dc component in the secondary current, therefore no additional losses in the transformer core. 4. Acceptable ripples % greater than that when the source is pure dc 5. Acceptable ripple factor 48%. 6. The diode must carry only the applied voltage in the backward biasing, 7. n the case of L load and back emf, the current mode ( continuous or discontinuous), therefore the diode conducting time depends on the load impedance and phase shift. 8. Single phase rectifiers are used for load up to 5 kw. For larger power output, three-phase and multiphase rectifiers are used. Despite the good performances of the rectifier, but there is a need to improve the system performances, reducing the transformer weight and capabilities, and energized loads with larger power. This could be achieved by applying three phase rectifiers as well described in the coming sections:

20 3.4. Three hase ectifiers Three-phase rectifiers are classified into Half-wave, and Full-wave energized loads with various impedances and back emf. Applying three-phase rectifiers aims to realize smooth rectified voltage, increasing efficiency, utilization, and minimizing the parameters of the filter. 3.4.: Three-hase Half-Wave ectifier Figure 3.9-a illustrates three-phase half wave rectifier energized load, where three diodes ( D, D, and D3) operates in series sequence, each one for a time of. The operation sequence is determined by the criteria : " the diode with maximum positive voltage applied across it's terminals will conduct ", therefore each phase will pass the current for, where for the rest of time this phase will be off and doesn't participate in the rectification process. Fig.3.9-a: Three-phase half-wave rectifier- Wye connected

21 Fig.3.9-b: Three-phase voltage, and output rectified voltage. Fig.3.9-c: hase current, and instantaneous rectified current.

22 Fig.3.9-d: Diode voltage Fig.3.9-e: hase current, and instantaneous rectified current at L load.. The average, rms voltage and current: / q. cos ω t / q q MS 3 in the case 3 3. / / q.8468 MS MS.. The efficiency and TUF: of (.cosωt) Three phase q 3 MS q three. 869 d ( ω t ) d( ωt) phase q. + q q sin sin q q ;

23 η AC AC ; η TUF ( A ) S ( A ) TUF rating MS AC. ( A ) 3 3. rating ( A ) (.869 ) (.8468 ). MS / q rating S. m ; S cos ω t d( ω t) rating m q.95 + sin % q % 66 % %.4854 m 3. The FF, F, F and MS.846 FF.869 F FF 8.4% %.65% AC.846 F.6844 (A ) rating The average and rms diode current and / 3 DA m. cos ω t d ( ω t) m sin m D / 3 ( m. cos ω t ) d ( ω t ) MS / s Summary: Taking into account the obtained rectifier parameters we conclude:

24 . The output average voltage is 8% of the phase magnitude.. Satisfied transformer utilization 66%, which means that the transformer must be / times larger that when it is used to deliver power from a pure ac voltage. 3. good rectification efficiency 96.66%. 4. There is a dc component in the secondary current, therefore additional losses in the transformer core. This reason explain the small value of TUF. 5. Good form factor %, and Acceptable ripples factor 8.4% greater than that when the source is pure dc. 6. The diode must 33% of the total average dc current, 57% of the total rms current, and must carry.73 in the reverse biasing. With purpose to enhanced the rectifier parameters ( reducing the ripples, increasing TUF, increasing the rectifier capability, and elimination the dc component in the secondary current) a three-phase full-wave rectifier is applied as follows:

The full wave rectifier consists of two diodes and a resister as shown in Figure

The full wave rectifier consists of two diodes and a resister as shown in Figure The Full-Wave Rectifier The full wave rectifier consists of two diodes and a resister as shown in Figure The transformer has a centre-tapped secondary winding. This secondary winding has a lead attached

More information

Summary 1. Contents 2. Introduction - background 3 / 4. Objective 5. Theory half wave rectifiers 6. Theory full wave rectifiers 7

Summary 1. Contents 2. Introduction - background 3 / 4. Objective 5. Theory half wave rectifiers 6. Theory full wave rectifiers 7 Summary The purpose of this assignment was to investigate, analyse and explain the operation of half wave and full wave, non-controlled, bridge rectifier circuits under a number of differing load conditions.

More information

ANADOLU UNIVERSITY DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

ANADOLU UNIVERSITY DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING ANADOLU UNIVERSITY DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING EEM 102 INTRODUCTION TO ELECTRICAL ENGINEERING EXPERIMENT 9: DIODES AND DC POWER SUPPLY OBJECTIVE: To observe how a diode functions

More information

Module 4. AC to AC Voltage Converters. Version 2 EE IIT, Kharagpur 1

Module 4. AC to AC Voltage Converters. Version 2 EE IIT, Kharagpur 1 Module 4 AC to AC Voltage Converters Version 2 EE IIT, Kharagpur 1 Lesson 26 AC to AC Voltage Converters Version 2 EE IIT, Kharagpur 2 This lesson provides the reader the following: (i) (ii) (iii) (iv)

More information

Fig. 2 shows a simple step waveform in which switching time of power devices are not considered and assuming the switch is ideal.

Fig. 2 shows a simple step waveform in which switching time of power devices are not considered and assuming the switch is ideal. CHAPTER 3: ANAYSIS OF THREE-EE INERTER In this chapter an analysis of three-level converter is presented by considering the output voltage waveform in order to determine the switching angle of power devices.

More information

ELEC 435 ELECTRONICS I. Rectifier Circuits

ELEC 435 ELECTRONICS I. Rectifier Circuits ELEC 435 ELECTRONICS I Rectifier Circuits Common types of Transformers The Rectifier Rectification is the conversion of an alternating current to a pulsating direct current. Rectification occurs in both

More information

Properties of electrical signals

Properties 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 Half-wave rectifier

More information

Lecture - 4 Diode Rectifier Circuits

Lecture - 4 Diode Rectifier Circuits Basic Electronics (Module 1 Semiconductor Diodes) Dr. Chitralekha Mahanta Department of Electronics and Communication Engineering Indian Institute of Technology, Guwahati Lecture - 4 Diode Rectifier Circuits

More information

SINGLE PHASE FULL WAVE AC VOLTAGE CONTROLLER (AC REGULATOR)

SINGLE PHASE FULL WAVE AC VOLTAGE CONTROLLER (AC REGULATOR) Deceber 9, INGE PHAE FU WAE AC OTAGE CONTROER (AC REGUATOR ingle phase full wave ac voltage controller circuit using two CRs or a single triac is generally used in ost of the ac control applications. The

More information

Non-controlled Singlephase Rectifier Circuits

Non-controlled Singlephase Rectifier Circuits Non-controlled Singlephase Rectifier Circuits Omar X. Avelar, Omar de la Mora & Diego I. Romero POWER ELECTRONICS (ESI 012A) Instituto Tecnológico y de Estudios Superiores de Occidente (ITESO) Departamento

More information

SWITCH-MODE dc-ac INVERTERS: dc SINUSOIDAL ac

SWITCH-MODE dc-ac INVERTERS: dc SINUSOIDAL ac Chapter 4 SWITCH-MODE dc-ac INVERTERS: dc SINUSOIDAL ac 4.1 Introduction Switch-mode dc-to-ac inverters are used in ac motor drives and uninterruptible ac power supplies where the objective is to produce

More information

Rectifier circuits & DC power supplies

Rectifier circuits & DC power supplies Rectifier circuits & DC power supplies Goal: Generate the DC voltages needed for most electronics starting with the AC power that comes through the power line? 120 V RMS f = 60 Hz T = 1667 ms) = )sin How

More information

Overview: The purpose of this experiment is to introduce diode rectifier circuits used in DC power supplies.

Overview: The purpose of this experiment is to introduce diode rectifier circuits used in DC power supplies. UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering Experiment No. 3 Diodes and Bridge Rectifiers Overview: The purpose of this experiment is to introduce diode

More information

LABORATORY 10 TIME AVERAGES, RMS VALUES AND THE BRIDGE RECTIFIER. Bridge Rectifier

LABORATORY 10 TIME AVERAGES, RMS VALUES AND THE BRIDGE RECTIFIER. Bridge Rectifier LABORATORY 10 TIME AVERAGES, RMS VALUES AND THE BRIDGE RECTIFIER Full-wave Rectification: Bridge Rectifier For many electronic circuits, DC supply voltages are required but only AC voltages are available.

More information

Rectifier: It is a circuit which employs one or more diodes to convert ac voltage into pulsating dc voltage. We will consider the following circuits:

Rectifier: It is a circuit which employs one or more diodes to convert ac voltage into pulsating dc voltage. We will consider the following circuits: Rectifier: It is a circuit which employs one or more diodes to convert ac voltage into pulsating dc voltage. We will consider the following circuits: (i) Half wave rectifier. (ii) Full wave rectifier.

More information

Microelectronics Circuit Analysis and Design. Rectifier Circuits. Donald A. Neamen. Chapter 2. Diode Circuits. In this chapter, we will:

Microelectronics Circuit Analysis and Design. Rectifier Circuits. Donald A. Neamen. Chapter 2. Diode Circuits. In this chapter, we will: icroelectronics Circuit Analysis and Design Donald A. Neamen Chapter 2 Diode Circuits n this chapter, we will: Determine the operation and characteristics of diode rectifier circuits, which is the first

More information

Diode Applications. by Kenneth A. Kuhn Sept. 1, 2008. This note illustrates some common applications of diodes.

Diode 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 half-wave rectification

More information

Half-Wave Rectifiers

Half-Wave Rectifiers Half-Wave Rectifiers Important Points of This Lecture Calculation of output voltage using appropriate piecewise models for diode for simple (unfiltered) half-wave rectifier Differences between calculations

More information

Diode Applications. As we have already seen the diode can act as a switch Forward biased or reverse biased - On or Off.

Diode Applications. As we have already seen the diode can act as a switch Forward biased or reverse biased - On or Off. Diode Applications Diode Switching As we have already seen the diode can act as a switch Forward biased or reverse biased - On or Off. Voltage Rectifier A voltage rectifier is a circuit that converts an

More information

electronics fundamentals

electronics fundamentals electronics fundamentals circuits, devices, and applications THOMAS L. FLOYD DAVID M. BUCHLA Lesson 1: Diodes and Applications Center-Tapped Full-wave Rectifier The center-tapped (CT) full-wave rectifier

More information

The D.C Power Supply

The D.C Power Supply The D.C Power Supply Voltage Step Down Electrical Isolation Converts Bipolar signal to Unipolar Half or Full wave Smoothes the voltage variation Still has some ripples Reduce ripples Stabilize the output

More information

13/02/2016. Diode Applications

13/02/2016. Diode Applications Diode Applications Introduction to diode circuits DC and AC diode circuits Diode applications Clippers Clampers Limiters Peak rectifiers Voltage multipliers Voltage regulators (with Zener diodes) Rectifiers

More information

CIRCUITS LABORATORY. Experiment 8. DC Power Supplies

CIRCUITS LABORATORY. Experiment 8. DC Power Supplies CIRCUITS LABORATORY Experiment 8 DC Power Supplies 8.1 INTRODUCTION This exercise constitutes a study of circuits that approximate an ideal constantvoltage source. Recall that the ideal constant-voltage

More information

Analysis V D = E V R = 0 V I D = 0 A

Analysis V D = E V R = 0 V I D = 0 A Electronic Circuits Load-Line Line Analysis Prof. Nizamettin AYDN naydin@yildiz.edu.tr http://www.yildiz.edu.tr/~naydin The load line plots all possible combinations of diode current ( D ) and voltage

More information

Experiment No. 5 FULL-WAVE RECTIFIERS AND POWER SUPPLIES

Experiment No. 5 FULL-WAVE RECTIFIERS AND POWER SUPPLIES Experiment No. 5 FULL-WAVE RECTIFIERS AND POWER SUPPLIES Objective: The objective of this experiment is to study the performance and characteristic of full-wave rectifiers and DC power supplies utilizing

More information

CHAPTER 2B: DIODE AND APPLICATIONS. D.Wilcher

CHAPTER 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 information

EE 321 Analog Electronics, Fall 2013 Homework #5 solution

EE 321 Analog Electronics, Fall 2013 Homework #5 solution EE 321 Analog Electronics, Fall 2013 Homework #5 solution 3.26. For the circuit shown in Fig. P3.26, both diodes are identical, conducting 10mA at 0.7V, and 100mA at 0.8V. Find the value of for which V

More information

Week 3: Diode Application Circuits

Week 3: Diode Application Circuits ELE 2110A Electronic Circuits Week 3: Diode Application Circuits Lecture 03-1 opics to cover oltage Regulation - Zener Diode Rectifiers DC-to-DC converters Wave shaping circuits Photodiode and LED Reading

More information

Lesson 27. (1) Root Mean Square. The emf from an AC generator has the time dependence given by

Lesson 27. (1) Root Mean Square. The emf from an AC generator has the time dependence given by Lesson 27 () Root Mean Square he emf from an AC generator has the time dependence given by ℇ = ℇ "#$% where ℇ is the peak emf, is the angular frequency. he period is he mean square value of the emf is

More information

2 Rectifier Circuits Half-Wave Rectifier Circuits Full-Wave Rectifier Circuits Linear Small-Signal Equivalent Circuits 7

2 Rectifier Circuits Half-Wave Rectifier Circuits Full-Wave Rectifier Circuits Linear Small-Signal Equivalent Circuits 7 Lecture Notes: 2304154 Physics and Electronics Lecture 5 (2 nd Half), Year: 2007 Physics Department, Faculty of Science, Chulalongkorn University 25/10/2007 Contents 1 Ideal-Diode Model 1 2 Rectifier Circuits

More information

φ 1, φ 2, φ 3 are the phase shifts of the respective sine wave components

φ 1, φ 2, φ 3 are the phase shifts of the respective sine wave components Harmonic Currents Sources, Problems and Solutions Kevin Gaughan 5 November 005 Outline: Mathematical Background Source of Harmonic Currents Total Harmonic Distortion Problems caused by harmonic currents

More information

Rectifiers V OAV " V ODC = 1 T. The simplest version of rectifier circuits is the half wave rectifier

Rectifiers V OAV  V ODC = 1 T. The simplest version of rectifier circuits is the half wave rectifier Rectifiers The simplest version of rectifier circuits is the half wave rectifier The circuit is made by a single diode (the transformer is used both to decouple the load from the mains and to change the

More information

CHAPTER 3 ANALYSIS OF SWITHCHED MODE PWM INVERTER

CHAPTER 3 ANALYSIS OF SWITHCHED MODE PWM INVERTER 31 CHAPTER 3 ANALYSIS OF SWITHCHED MODE PWM INVERTER 3.1 INTRODUCTION Fixed DC power can be converted into AC power at desired output voltage and frequency by using a power electronics circuit, called

More information

ANALOG ELECTRONICS EE-202-F IMPORTANT QUESTIONS

ANALOG ELECTRONICS EE-202-F IMPORTANT QUESTIONS ANALOG ELECTRONICS EE-202-F IMPORTANT QUESTIONS 1].Explain the working of PN junction diode. 2].How the PN junction diode acts as a rectifier. 3].Explain the switching characteristics of diode 4].Derive

More information

Rectifiers and filters

Rectifiers and filters Page 1 of 7 Rectifiers and filters Aim : - To construct a DC power supply and to find the percentage of ripple-factor and percentage of regulation. Apparatus :- Transformer 230/15 ( step-down), four IN

More information

Single phase, uncontrolled rectification (conversion)

Single phase, uncontrolled rectification (conversion) Single phase, uncontrolled rectification (conversion) J Charles Lee Doyle C12763425 29 October 2015 Abstract An experiment investigating full wave rectification, for the purposes of producing a steady

More information

ε rms ε substation HOMEWORK #11 Chapter 29

ε rms ε substation HOMEWORK #11 Chapter 29 HOMEWOK # hapter 9 5 f the frequency in the circuit in Figure 9-8 is doubled, the capacitive reactance of the circuit will (a) double, (b) not change, (c) halve, (d) quadruple. Determine the oncept The

More information

Precision Diode Rectifiers

Precision Diode Rectifiers by Kenneth A. Kuhn March 21, 2013 Precision half-wave rectifiers An operational amplifier can be used to linearize a non-linear function such as the transfer function of a semiconductor diode. The classic

More information

Diodes (non-linear devices)

Diodes (non-linear devices) C H A P T E R 4 Diodes (non-linear devices) Diode structure Ideal Diode Figure 4.2 The two modes of operation of ideal diodes and the use of an external circuit to limit (a) the forward current and (b)

More information

3 Phase Power Basics. Thomas Greer Executive Director Engineering Services TLG Services

3 Phase Power Basics. Thomas Greer Executive Director Engineering Services TLG Services 3 Phase Power Basics Thomas Greer Executive Director Engineering Services TLG Services Agenda Terminology Basic Electrical Circuits Basic Power Calculations Why This Electricity Stuff? To Become an Electrical

More information

Questions. Question 1

Questions. Question 1 Question 1 Questions Explain why transformers are used extensively in long-distance power distribution systems. What advantage do they lend to a power system? file 02213 Question 2 Are the transformers

More information

Analog & Digital Electronics Course No: PH-218

Analog & Digital Electronics Course No: PH-218 Analog & Digital Electronics Course No: PH-18 Lec 3: Rectifier and Clipper circuits Course nstructors: Dr. A. P. VAJPEY Department of Physics, ndian nstitute of Technology Guwahati, ndia 1 Rectifier Circuits:

More information

EXPERIMENT 2 HALF-WAVE & FULL- WAVE RECTIFICATION

EXPERIMENT 2 HALF-WAVE & FULL- WAVE RECTIFICATION EASTERN MEDITERRANEAN UNIVERSITY DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING EEE 341 LAB ELECTRONIC I EXPERIMENT 2 HALF-WAVE & FULL- WAVE RECTIFICATION Std. No. Name &Surname: 1 2 3 Group No : Submitted

More information

Basic Electrical Theory

Basic Electrical Theory Basic Electrical Theory Impedance PJM State & Member Training Dept. PJM 2014 10/24/2013 Objectives Identify the components of Impedance in AC Circuits Calculate the total Impedance in AC Circuits Identify

More information

DIODE CIRCUITS LABORATORY. Fig. 8.1a Fig 8.1b

DIODE CIRCUITS LABORATORY. Fig. 8.1a Fig 8.1b DIODE CIRCUITS LABORATORY A solid state diode consists of a junction of either dissimilar semiconductors (pn junction diode) or a metal and a semiconductor (Schottky barrier diode). Regardless of the type,

More information

An application is the use of diodes to create a regulated voltage.

An application is the use of diodes to create a regulated voltage. 8. Use of the Diode Forward Drop in Voltage Regulation: An application is the use of diodes to create a regulated voltage. o A voltage regulator is a circuit whose purpose is to provide a constant dc voltage

More information

HALF-WAVE & FULL-WAVE RECTIFICATION

HALF-WAVE & FULL-WAVE RECTIFICATION HALF-WAE & FULL-WAE RECTIFICATION Objectives: HALF-WAE & FULL-WAE RECTIFICATION To recognize a half-wave rectified sinusoidal voltage. To understand the term mean value as alied to a rectified waveform.

More information

Power Line Harmonics. and Installation Considerations. For AC and DC Drives

Power Line Harmonics. and Installation Considerations. For AC and DC Drives Power Line Harmonics and Installation Considerations For AC and DC Drives Doc # October 10, 2004 Page 1 of 14 Contents POWER LINE HARMONICS AND INSTALLATION CONSIDERATIONS FOR AC AND DC DRIVES... 3 DC

More information

Chapter 9: Ideal Transformer. 10/9/2003 Electromechanical Dynamics 1

Chapter 9: Ideal Transformer. 10/9/2003 Electromechanical Dynamics 1 Chapter 9: Ideal Transformer 10/9/003 Electromechanical Dynamics 1 Introduction Transformers are one of the most useful electrical devices provides a change in voltage and current levels provides galvanic

More information

Chapter 8. Introduction to Alternating Current and Voltage. Objectives

Chapter 8. Introduction to Alternating Current and Voltage. Objectives Chapter 8 Introduction to Alternating Current and Voltage Objectives Identify a sinusoidal waveform and measure its characteristics Describe how sine waves are generated Determine the various voltage and

More information

FUNDAMENTALS OF ENGINEERING (FE) EXAMINATION

FUNDAMENTALS OF ENGINEERING (FE) EXAMINATION January 8, 008 1:55 Appc Sheet number 1 Page number 77 magenta black A P P E N D I X C FUNDAMENTALS OF ENGINEERING (FE) EXAMINATION C.1 INTRODUCTION The Fundamentals of Engineering (FE) examination 1 is

More information

TSTE19 Power Electronics

TSTE19 Power Electronics TSTE19 Power Electronics Lecture 7 Tomas Jonsson ISY/EKS 2015-11-24 2 Outline DC-AC switching inverters Switch-mode principle Single-phase inverter PWM switching Current ripple and commutation 2015-11-24

More information

Fourier Series Analysis

Fourier Series Analysis School of Engineering Department of Electrical and Computer Engineering 332:224 Principles of Electrical Engineering II aboratory Experiment 6 Fourier Series Analysis 1 Introduction Objectives The aim

More information

EXPERIMENT 4:- MEASUREMENT OF REACTANCE OFFERED BY CAPACITOR IN DIFFERENT FREQUENCY FOR R-C CIRCUIT

EXPERIMENT 4:- MEASUREMENT OF REACTANCE OFFERED BY CAPACITOR IN DIFFERENT FREQUENCY FOR R-C CIRCUIT Kathmandu University Department of Electrical and Electronics Engineering BASIC ELECTRICAL LAB (ENGG 103) EXPERIMENT 4:- MEASUREMENT OF REACTANCE OFFERED BY CAPACITOR IN DIFFERENT FREQUENCY FOR R-C CIRCUIT

More information

Basic Electronics Prof. Dr. Chitralekha Mahanta Department of Electronic and Communication Engineering Indian Institute of Technology, Guwahati

Basic Electronics Prof. Dr. Chitralekha Mahanta Department of Electronic and Communication Engineering Indian Institute of Technology, Guwahati Basic Electronics Prof. Dr. Chitralekha Mahanta Department of Electronic and Communication Engineering Indian Institute of Technology, Guwahati Module -5 Power Circuits and System Lecture - 2 Transformer

More information

Circuits with inductors and alternating currents. Chapter 20 #45, 46, 47, 49

Circuits 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 information

Project Report. EE452: Power Electronics. Forward Converter. Group Members. Absar-ul-Hassan Isfar Tariq

Project Report. EE452: Power Electronics. Forward Converter. Group Members. Absar-ul-Hassan Isfar Tariq Project Report EE452: Power Electronics Forward Converter Group Members Absar-ul-Hassan 13100072 Isfar Tariq 13100152 Muhammad Kumail Haider 13100183 Umer Iftikhar 13100097 Introduction A forward converter

More information

Basic Electrical Theory

Basic Electrical Theory Basic Electrical Theory Power Principles and Phase Angle PJM State & Member Training Dept. PJM 2014 10/24/2013 Objectives At the end of this presentation the learner will be able to; Identify the characteristics

More information

Yrd. Doç. Dr. Aytaç Gören

Yrd. Doç. Dr. Aytaç Gören H2 - AC to DC Yrd. Doç. Dr. Aytaç Gören ELK 2018 - Contents W01 Basic Concepts in Electronics W02 AC to DC Conversion W03 Analysis of DC Circuits W04 Transistors and Applications (H-Bridge) W05 Op Amps

More information

Harmonic Distortion of the AC Power Line

Harmonic Distortion of the AC Power Line Introduction Adjustable frequency drives have become the standard method of control for heating, ventilating and air conditioning (HVAC) systems due to precise control and very significant energy savings.

More information

Lecture 8 Diode Applications in Microelectronic Circuits

Lecture 8 Diode Applications in Microelectronic Circuits ECE 3040 - Microelectronic Circuits Lecture 8 iode Applications in Microelectronic Circuits Instructor: r. Shyh-Chiang Shen Study: Jaeger 3.9, 3.10, 3.13.1, 3.13.2, 3.13.3, 3.14, 3.15, 3.16, Lecture Outline

More information

Ripple Control in AC to DC Converter

Ripple Control in AC to DC Converter IOSR Journal of Engineering (IOSRJEN) e-issn: 22-321, p-issn: 2278-8719 Vol. 3, Issue 1 (Jan. 213), V5 PP 26-3 Ripple Control in AC to DC Converter Sudeep Pyakuryal 1, Mohammad Matin 3 Department of Electrical

More information

Chapter 3. Diodes and Applications. Introduction [5], [6]

Chapter 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 p-n junction diode. All other diode

More information

Open circuit and short circuit tests on single phase transformer

Open circuit and short circuit tests on single phase transformer 1 Aim Experiment No: 2 Open circuit and short circuit tests on single phase transformer To understand the basic working principle of a transformer. To obtain the equivalent circuit parameters from OC and

More information

EE/CE 3111 Electronic Circuits Laboratory Spring 2015

EE/CE 3111 Electronic Circuits Laboratory Spring 2015 Lab 2: Rectifiers Objectives The objective of this lab is for you to become familiar with the functionality of a diode in circuits. We will experiment the use of diodes in limiting and rectifying circuits.

More information

EXPERIMENT 3 DIODE AS RECTIFIER

EXPERIMENT 3 DIODE AS RECTIFIER EXPERIMENT 3 DIODE AS RECTIFIER 1. OBJECTIVES 1.1 To understand the application of diode. 1.2 To demonstrate the characteristics of three different diode rectifier circuits: halfwave rectifier, center-tapped

More information

Part IV Modern Rectifiers and Power System Harmonics

Part IV Modern Rectifiers and Power System Harmonics Part IV Modern Rectifiers and Power System Harmonics Chapter 15 Chapter 16 Chapter 17 Chapter 18 Power and Harmonics in Nonsinusoidal Systems Line-Commutated Rectifiers The Ideal Rectifier Low Harmonic

More information

CYCLOCONVERTERS. Fig.1 Block diagram of a cycloconverter

CYCLOCONVERTERS. Fig.1 Block diagram of a cycloconverter CYCLOCONVERTERS Burak Ozpineci, Leon M. Tolbert Department of Electrical and Computer Engineering University of Tennessee-Knoxville Knoxville, TN 37996-2100 In industrial applications, two forms of electrical

More information

See Horenstein 4.3 and 4.4

See Horenstein 4.3 and 4.4 EE 462: Laboratory # 4 DC Power Supply Circuits Using Diodes by Drs. A.V. Radun and K.D. Donohue (2/14/07) Department of Electrical and Computer Engineering University of Kentucky Lexington, KY 40506 Updated

More information

General Information Power Factor Correction Questions and Answers

General Information Power Factor Correction Questions and Answers R.P. Switchboards PFC MANUAL Page 1 of 9 General Information Power Factor Correction Questions and Answers Back to Basics: What does Power Factor Mean and Why Must We Correct it? Power factor is the ratio

More information

AC Direct Off-Line Power Supplies

AC Direct Off-Line Power Supplies AC Direct Off-Line Power Supplies r Introduction Many DC power supplies found in electronic systems, including those in this Tech School, rectify the 120 volts available at an electric outlet. The initial

More information

Diode Application. WED DK2 9-10am THURS DK6 2-4pm

Diode Application. WED DK2 9-10am THURS DK6 2-4pm Diode Application WED DK2 9-10am THURS DK6 2-4pm Simple Diode circuit Series diode configuration Circuit From Kirchoff s Voltage Law From previous lecture E = V I D D + IDR / = I V D nv T S e ( 1) Characteristics

More information

Prof. Anchordoqui Problems set # 11 Physics 169 May 5, 2015

Prof. Anchordoqui Problems set # 11 Physics 169 May 5, 2015 rof. Anchordoqui roblems set # hysics 69 May 5, 5. A semicircular conductor of radius.5 m is rotated about the axis A at a constant rate of rev/min (Fig. ). A uniform magnetic field in all of the lower

More information

Homework Assignment 03

Homework Assignment 03 Question 1 (2 points each unless noted otherwise) Homework Assignment 03 1. A 9-V dc power supply generates 10 W in a resistor. What peak-to-peak amplitude should an ac source have to generate the same

More information

EDEXCEL NATIONAL CERTIFICATE/DIPLOMA UNIT 5 - ELECTRICAL AND ELECTRONIC PRINCIPLES NQF LEVEL 3 OUTCOME 4 - ALTERNATING CURRENT

EDEXCEL NATIONAL CERTIFICATE/DIPLOMA UNIT 5 - ELECTRICAL AND ELECTRONIC PRINCIPLES NQF LEVEL 3 OUTCOME 4 - ALTERNATING CURRENT EDEXCEL NATIONAL CERTIFICATE/DIPLOMA UNIT 5 - ELECTRICAL AND ELECTRONIC PRINCIPLES NQF LEVEL 3 OUTCOME 4 - ALTERNATING CURRENT 4 Understand single-phase alternating current (ac) theory Single phase AC

More information

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

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 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 information

Product Data Bulletin

Product Data Bulletin Product Data Bulletin Power System Harmonics Causes and Effects of Variable Frequency Drives Relative to the IEEE 519-1992 Standard Raleigh, NC, U.S.A. INTRODUCTION This document describes power system

More information

Power Factor Vs. Crest Factor: Critical Application Quantities Nicholas Piotrowski, Associated Power Technologies

Power Factor Vs. Crest Factor: Critical Application Quantities Nicholas Piotrowski, Associated Power Technologies Power Factor Vs. Crest Factor: Critical Application Quantities Nicholas Piotrowski, Associated Power Technologies Introduction Two critical quantities to specify when dealing with AC power sources are

More information

Lecture 8 Root mean square

Lecture 8 Root mean square Lecture 8: ECEN 14 Introduction to Analog and Digital Electronics Lecture 8 oot mean square Concept of a sinusoidal signal Examples Application to rectified signals obert. McLeod, University of Colorado

More information

Power Supplies. 1.0 Power Supply Basics. www.learnabout-electronics.org. Module

Power Supplies. 1.0 Power Supply Basics. www.learnabout-electronics.org. Module Module 1 www.learnabout-electronics.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 information

Chapter 2 MENJANA MINDA KREATIF DAN INOVATIF

Chapter 2 MENJANA MINDA KREATIF DAN INOVATIF Chapter 2 DIODE part 2 MENJANA MINDA KREATIF DAN INOATIF objectives Diode with DC supply circuit analysis serial & parallel Diode d applications the DC power supply & Clipper Analysis & Design of rectifier

More information

Sinusoidal Pulse width modulation

Sinusoidal Pulse width modulation Sinusoidal Pulse width modulation The switches in the voltage source inverter (See Fig can be turned on and off as required In the simplest approach, the top switch is turned on If turned on and off only

More information

A Common Cure for Harmonics: ABB Ultra Low Harmonic Drives

A Common Cure for Harmonics: ABB Ultra Low Harmonic Drives Matthew LaRue, ABB Drives Product Manager Philadelphia District, Baldor of Philadelphia A Common Cure for Harmonics: ABB Ultra Low Harmonic Drives October 21, 2013 Slide 1 Session Goals Understand what

More information

ECE 2201 PRELAB 2 DIODE APPLICATIONS

ECE 2201 PRELAB 2 DIODE APPLICATIONS ECE 2201 PRELAB 2 DIODE APPLICATIONS P1. Review this experiment IN ADVANCE and prepare Circuit Diagrams, Tables, and Graphs in your notebook, prior to coming to lab. P2. Hand Analysis: (1) For the zener

More information

R f. V i. ET 438a Automatic Control Systems Technology Laboratory 4 Practical Differentiator Response

R 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 information

Lab 3 Rectifier Circuits

Lab 3 Rectifier Circuits ECET 242 Electronic Circuits Lab 3 Rectifier Circuits Page 1 of 5 Name: Objective: Students successfully completing this lab exercise will accomplish the following objectives: 1. Learn how to construct

More information

APPLICATION NOTE - 017

APPLICATION 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 information

Semiconductor Diode. It has already been discussed in the previous chapter that a pn junction conducts current easily. Principles of Electronics

Semiconductor Diode. It has already been discussed in the previous chapter that a pn junction conducts current easily. Principles of Electronics 76 6 Principles of Electronics Semiconductor Diode 6.1 Semiconductor Diode 6.3 Resistance of Crystal Diode 6.5 Crystal Diode Equivalent Circuits 6.7 Crystal Diode Rectifiers 6.9 Output Frequency of Half-Wave

More information

Chapter 4 AC to AC Converters ( AC Controllers and Frequency Converters )

Chapter 4 AC to AC Converters ( AC Controllers and Frequency Converters ) Chapter 4 AC to AC Converters ( AC Controllers and Frequency Converters ) Classification of AC to AC converters Same frequency variable magnitude AC power AC controllers AC power Frequency converters (Cycloconverters)

More information

Homework Assignment 06

Homework Assignment 06 Question 1 (2 points each unless noted otherwise) Homework Assignment 06 1. Typically, the C-E saturation voltage for a BJT, namely V CE(sat), is in the range of (circle one) Answer: (a) (a) 0.2 1.0 V

More information

2. 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?

2. 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 information

Three phase circuits

Three phase circuits Three phase circuits THREE PHASE CIRCUITS THREE-PHASE ADVANTAGES 1. The horsepower rating of three-phase motors and the kva rating of three-phase transformers are 150% greater than single-phase motors

More information

Power Electronics. Prof. K. Gopakumar. Centre for Electronics Design and Technology. Indian Institute of Science, Bangalore.

Power Electronics. Prof. K. Gopakumar. Centre for Electronics Design and Technology. Indian Institute of Science, Bangalore. Power Electronics Prof. K. Gopakumar Centre for Electronics Design and Technology Indian Institute of Science, Bangalore Lecture - 1 Electric Drive Today, we will start with the topic on industrial drive

More information

HARMONICS - Understanding the Facts - Part 3 Richard P. Bingham

HARMONICS - Understanding the Facts - Part 3 Richard P. Bingham HARMONICS - Understanding the Facts - Part 3 Richard P. Bingham Abstract Understanding what is important to know about harmonics can be challenging for those without extensive electrical engineering backgrounds.

More information

Control of a Three Phase Induction Motor using Single Phase Supply

Control of a Three Phase Induction Motor using Single Phase Supply Control of a Three Phase Induction Motor using Single Phase Supply G. R. Sreehitha #1, A. Krishna Teja *2, Kondenti. P. Prasad Rao #3 Department of Electrical & Electronics Engineering, K L University,

More information

NZQA 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 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 information

Experiment 16 ANALOG FOURIER ANALYSIS. Experiment setup 4. Prelab problems 6. Experiment procedure 7. Appendix A: an effective high-q filter A-1

Experiment 16 ANALOG FOURIER ANALYSIS. Experiment setup 4. Prelab problems 6. Experiment procedure 7. Appendix A: an effective high-q filter A-1 16-i Experiment 16 ANALOG FOURIER ANALYI Introduction 1 Theory 1 Experiment setup 4 Prelab problems 6 Experiment procedure 7 Appendix A: an effective high-q filter A-1 16-ii 16-1 1/31/14 INTRODUCTION In

More information

Practice Problems - Chapter 33 Alternating Current Circuits

Practice Problems - Chapter 33 Alternating Current Circuits Multiple Choice Practice Problems - Chapter 33 Alternating Current Circuits 4. A high-voltage powerline operates at 500 000 V-rms and carries an rms current of 500 A. If the resistance of the cable is

More information

Analog & Digital Electronics Course No: PH-218

Analog & Digital Electronics Course No: PH-218 Analog & Digital Electronics Course No: PH-218 Lec-4: Clampers, Voltage multipliers, & Zener diode Course nstructors: Dr. A. P. VAJPEY Department of Physics, ndian nstitute of Technology Guwahati, ndia

More information

Chapter 22: Alternating current. What will we learn in this chapter?

Chapter 22: Alternating current. What will we learn in this chapter? Chapter 22: Alternating current What will we learn in this chapter? Contents: Phasors and alternating currents Resistance and reactance Series R L C circuit Power in ac-circuits Series resonance Parallel

More information