input voltage of 4006.22. (a) For a three-phase half-wave SCR converter delivering continuous output current, derive<α < 150°.expressions for the average output voltage for firing angle of (i) 0° < a <30° and (ii) 30° < a <(b) A three-phase half-wave SCR converter delivers constant load current of 30 A over the firingangle range of 0° to 80°. At these two firing angles, compute the power delivered to load for an ac inputbluoda emis no-gut diuario ed oais baivoltage of 400 V from a delta-star transformer.tive 3√3 Vmpsemos bib dildo Ans: (a) For both (i) and (ii), Vo=cos α (b) 8.102 kW (c) 1.4068 kW

Answered: Image /qna-images/answer/1d94fb0b-c8d4-40ab-b3d9-41620a08b5c5.jpg

Answered: input voltage of 400 6.22. (a) For a…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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QUESTION 1 Design a high efficiency 3.3 V, 5A d.c.to d.c. power converter from a 4 to 5.5 Vdc source. The maximum allowable inductor current ripple and output voltage ripple are 0.1A and 20 mV, respectively. Assume a switching frequency of 20 kHz. a) Design a suitable converter power circuit using a MOSFET switch, showing all calculation of inductor and capacitor values and drawing a circuit diagram of the final design including component values. Indicate the peak inverse voltage and forward current rating of any diode required, and the maximum drain- source voltage of the MOSFET. b) On the Schematic diagram, draw the path of the current flow during the ON time and the OFF time. c) Describe the effect of changing the values of the inductor and the capacitor in the circuit. d) What is the effect of switching frequency in the circuit? e) Draw the schematic diagram of a circuit with the output voltage higher than the input voltage.
6.8. In a single-phase mid-point converter, turns ratio from primary to each secondary is source voltage is 230 V, 50 Hz. For a resistive load of R = 22, determine ry is 1.25. The eldsoilage at.noitulos sol to arty 10 10dairydd add 2018 agatlov bas (a) maximum value of average output voltage and load current and the corresponding firing and conduction angles, (b) maximum average and rms thyristor currents, (c) maximum possible values of positive and negative voltages across SCRs, beef JЯ A (6) (d) the value of a for load voltage of 100 V, H 80.0 3 bas 201Я of part (d).88 mois q sealuq-sno saada olgais e 101 (a),8.3 sin wt d(wt) etc.) (e) the value of voltage across SCR at the instant of commutation for a of Hint. (b) Maximum average thyristor current = 1 Vm 2π J0R π bsof bus [Ans. (a) 165.63 V, 82.82 A, a = 0°, y= 180° (b) 41.41 A, 65.054 A (c) 520.4 V, 520.4 V (d) 52.862° (e) 414.82 V] Phase Controlled Rectifiers [Prob. 6] 243 bao6.9. (a) A single-phase full converter charges a…
A three phase fullwave controlled rectifier has an input voltage which is 480vrmsat 60hz. the load modelled as a series resistance and inductance with R=10ohm and l=50mH. determine the delay angle to produce an average of 50ain the load.
Suppose a power supply is energized by an AC source of 119 V RMS. The transformer step-down ratio is 8:1, it uses a full-wave bridge rectifier circuit with silicon diodes, and the filter is nothing but a single electrolytic capacitor. Calculate the unloaded DC output voltage for this supply (assume 0.7 volts drop across each diode). Also, write an equation solving for DC output voltage (Vout), given all these parameters.
A thyristor half-wave controlled converter has a supply voltage of 240V at 50Hz and a load resistance of 100 ohms. What are the average values of load voltage and current when firing delay angle is; 1. 140 degrees. 2. 30 degrees.
Design a transformer-fed HWR that provides an output effective voltage of 60V. Use the ideal diode model for the analysis. a. Draw the circuit and write the different equations required in b. b. Calculate the transformer's secondary peak voltage, diode PIV rating, and transformer turns ratio (secondary to primary) if the power is taken from a 220V power line.
Consider the full-wave rectifier circuit shown below, where• vS(t) is a sinusoidal signal with a peak value (Vs = 5 V).• Diodes are modelled using constant voltage model with VDO = 0.7 V• The ac line voltage has an rms value of 120 V and a frequency (f) = 60 Hza) Calculate the transformer turns ratio. b) Plot in the same graph signal vS(t) and the output signal vO(t) versus time (t) (show all details including amplitudes, time instances, etc.) c) Calculate the rms value of the output signal vO(t). (hint: sin2(x) = 0.5(1- cos(2x))) d) If a capacitor C=3.58 F is connected across R = 10 k, repeat (b) in a new graph
Show the downward shift of the output signal with the series capacitor and diode.Clampers or DC restorers are clamp a peak of a waveform to a specific DC level comparedwith a capacitively coupled signal which swings about its average DC level (usually 0V).If the diode is removed from the clamper, it defaults to a simple coupling capacitor– noWhat is the clamp voltage? And, which peak gets clamped? Why is this so? Voltage values: Capasitor value: 1000 pFDC offset: 0 VAmplitude: 5 VFreq: 1 KHz
Análisis de rectificador onda completa Consider the capacitor-filter rectifier circuit as shown in Figure 1. The input is a single-phase source that is derived from a 220 Vrms mains. Tasks for analysis: (a) Rig up the circuit as shown in Figure land plot V andi versus time. (b) Why is there ringing on the current wave-form? (c) What is the series impedance of the circuitệ (d) Plot V and V. versus time. What is the ripple? How does ripple depend on load, capacitor C; and frequency of input wave-form? (e) Measure the current and voltage waveform across the rectifier diode. (f) Estimate the average and ms currents through the rectifier diode, Calculate the diode power dissipation. (g) What should be the peak current rating of the diode? (h) Change the initial charge voltage on the capacitor Cr. What is the effect on the input surge current? (i) Change the phase angle of the input V, at start up. Observe the effect on current i. What happens and why? 1) Under whaf conditions do you get…
a-Draw the cct Q1/(A) For the waveforms of s phase angle control Ac-Ac converter: - diagram and complete other waveforms. b- Derive the equation of V Mean and V Effective. c-If a л/6 compute the i/p P.F, average i/p current and o/p in this cct. (15M). Q1(B) Prove that the single phase half wave rectifier with load inductive that:- vdc= Vmax 2π [1+cos(+0)] (10M) Q2/(A) Design parallel inverter to generate square wave with frequency 400 Hz to supply resistive load 120 2,240 v, if the battery voltage 12. (15M) Q2/(B)What are the meaning of the following: - [choose five only] (10M) 1-PWM 2- Combined inverter 3-UPS 4- Triac. 5- Smart technology device 6-Switching mode regulator 7-Throsold v. Q3/(A) Three phase F.W.R is operated from a star connection 208v,60 Hz supply, RL=1002, this rectifier must supply a load of 40 2 at half its max. O/P v. Find: -1- Firing angle. 2-r.m. s and average o/p current 3- o/p frequency. 4- if the firing angle smaller than 60° 5-Draw the waveforms for all…
A fully controlled, single-phase bridge rectifier is powered from an ideal 220V, 50Hz source. The rectifier is triggered with a trigger angle of 60 degrees and provides a smooth current of 50A to the load at the output. According to this: a) Draw the waveform of the output voltage in scale and calculate the average value of the output voltage. Combine the average voltage signal with the output voltage wave signal. Show on the same figure. b) Draw the waveforms of the thyristor currents, the gap diode current and the current drawn from the source in scale. c) Calculate the value of the filter inductance used at the output when the ripple in the load current is 3A. (Do the operations by showing the output voltage shapes and areas on the figure. The answers should be in the system and order in the solved examples.)
A diode whose internal resistance is 20 ohms is to supply power to a 1000-ohm load from a 110V(rms) source of supply. Calculate the peak load current, dc load current. and determine the percent regulation from no load to the given load. a.) Peak Load Current= 120.8mA; DC load current=25.5mA b.) Peak Load Current= 133.3mA; DC load current=29.4mA c.) Peak Load Current= 144.3mA; DC load current=34.7mA d.) Peak Load Current= 152.5mA; DC load current= 48.5mA

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