3.19For the circuit arrangement shown in Fig.3.66 and for a pure resistiveload, sketch a set of waveforms for thyristor triggering a = 90° showingthe supply current, load current and thyristors voltage.abb02 Derive an expression for the average value of the load current Idc andcalculate its values for a = 0°, 60°, and 120° if the the supply voltage isideal sinusoid with V = 400 V, 50 Hz and the load resisror R =10 Q.How is the average load current affected if diode D₂ fails to open circuit?ziqquae a or belosmos zimsitholen gains is no-bomun al sitiFig.3.66.LeeetIdcDiD3Rogatio viqquzVacLoadVsin atconstater box H 2.81 1o consioubni me to D4D2SS.CPE Subd oil-ri-09 avew-llut ballonnes vilu s diguou[Ans: 12.7 A, 9.5 A, 3.17 A.When diode D2 failed to open circuit, thecircuit will act as a half-wave rectifier]

Step 1: Step 2: Step 3: Step 4:

Answered: 3.19 For the circuit arrangement shown…

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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Construct a forward bias diode circuit in multi-sim (desktop, not live). Simulate and find the current through the resistor and the voltage across the resistor.
Three phase Bridge rectifier operated from a 380V, 50Hz source throughout three-phase Y/Y connected transformer with ration 2:1. The load current has continuous character with negligible ripples and average thyristor current of 15A. The circuit inductance per phase is 1.2mH. The rectified voltage due to overlapping angle is 90 % of that voltage when this angle is neglected. 1- How much will the voltage drop be due to circuit inductance * 2- How much will the dc average voltage Vdc(alpha) be. 3- How much will the firing angle be ? 4- The overlapping angle. 5- How much is the percentage change of the output dc power if the thyristors T2, T4 and T6 are replaced by three diodes D2, D4, D6. 6- How much will be the maximum RMS phase current for the mentioned in previous task circuit ( semi-converter). 7- If an additional of 1 mH inductances are added to the existing inductances in the phases , how much will the overlapping angle be. The dc load current is kept constant & the…
IN OUT GND V3 (1) R VR Consider the design of a DC power supply as shown above with the following requirements and constraints: • input from a 240 V RMS 50 Hz mains supply • diodes have a forward voltage drop of 0.6 V • utput voltage is required to be 9.1 V supplying a current of 575 mA • uses a 20:1 step-down transformer • the voltage regulator has a dropout voltage of 1.8 V In all of the questions below, give numeric answers correct to 3 significant figures and include units where required. Keep track of your intermediate results to more significant figures, otherwise rounding errors may lead to incorrect results. a. What is the peak voltage available at the secondary windings of the transformer? 数字单位 b. What is the peak voltage across the filter capacitor? 数字单位 c. What is the minimum allowable voltage at the input of the voltage regulator? 数字单位 d. What is the maximum allowable allowable ripple voltage across the capacitor? 数字单位 e. What is the minimum capacitor value that will…
Part C. Zener Diode 1. 2. 4. Find a datasheet for a 1N749A Zener Diode. Record the value for reverse breakdown voltage below: 1N749A Reverse Breakdown voltage_ Build the circuit shown in Figure 3 in multisim. Include a voltmeter to measure the voltage across the Diode with the polarity reference shown and an ammeter to measure the current with direction as shown. (Note: for easy wiring, you can right-click on the meters in your circuit, and flip them horizontally.) Operate the supply voltage (Vsupply) between ± 20 V in steps of 1 V (i.e., -20 V, -19 V, -18 V, etc.) and place your results in Table 3 5. Plot the I-V characteristics of the diode using the data from Table 5 of the Lab Report. You should either do a **CLEAR** plot by hand or use a program like EXCEL and paste the results in the space provided V supply 1 ΚΩ www ww Current 1N749A * 510 2 ΚΩ Voltage + Figure 3: Third Circuit Using a Zener Diode 200 Ω
A three-phase rectifier is supplied by a 173.2-V rms line-to-line 60-Hz source. The RL load is a 100 resistor in series with a 15-mH inductor. Determine THD taking Is1 = 1.35
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Q3. Determine the minimum and maximum values of the load current for which the Zener below will operate correctly. Also determine what is the minimum value of load resistance R. Max that can be used. The following values are provided: V = 12 V, I = 1 mA and I = 50 ZK mA. Assume an ideal Zener diode with no resistance after it has switched on and thus a constant voltage drop of 12 V over it when ON. R 470 N VIN 24 V RL Answer: Minimum load current: () Answer: Maximum current: () Answer: Minimum load resistance: ()

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