for Phase shift PWM inverter, Vdc=100V, L=25mH, R=10ohm, f=60Hz. draw the spectrum of the output voltage and current and then find the rms current value and the output power. Take n =1-20. What is the effect of increasing and decreasing L on the output current waveform.

For the PN junction under sun light, the short circuit current amount is Isc. Please sketch the I-V curve of PN under the sun based on that under the dark condition above. Indicate Isc and Voc in your plot.

3 A peak rectifier (peak tollower) Cir cuit is gian below. Vs is a GOH3 Sinuscidal Vollge with peak value Upz50V. 50V. The load resistance R= Sk . Find the Vallke of the capacitance C Such that the peak- to-peak ripple 2 volts. (idenl diede) Voltage Vr Vs

Find the performance parameters (FF, RF and n) for the Single phase bridge uncontrolled rectifier with RL load. If the phase voltage: Vph(t) = Vm sin(wt). Draw the circuit diagram and sketch the voltages and current waveforms.

Write down and explain Shockley equation for drain current for JFET.

A Full-wave bridge rectifier Circuit contains 4 Germanium diodes Cuse the Constant voltage drop model with VD = 0.30) driving ac a Load resistance of 10 kur. An Source with a Peak value of 4ou at bottz Vortage Source with a applied to the Circuit. a DIS 2 Determine the de value of the output wave form Determine the value of the Capacitor In uf needed to limit the output ripple vortage to 0.5 V if the Peak output voltage is equal to Upic -2VD

A classical rectifier is to be designed to provide 5V  1% for a logic circuit, with output power ofup to 12W. The input is conventional 220V, 50Hz source.a. Choose a transformer ratiob. Choose a diode configurationc. Calculate the capacitor value to meet the requirementsd. Draw the load voltage, the load current and the source current (secondary side)waveforms for maximum output power (12W).

ANSWER ALL WILL UPVOTE IF CORRECT 7. What is the maximum conduction angle for an SCR? a. 90, b. variable, c. 180, d.360 8. A breakover type of device can be represented as a long resistor with a diode tapped somewhere in the middle. a. SCR, b. BJT, c. FET, d. UJT 9. It is the ratio of the resistance at the base1 terminal to the resistance across the two bases. a. base resistance ratio, b. interbase resistance ratio, c. intrinsic standoff ratio, d. intrinsic resistance ratio 10. the duration (in degrees) of an AC cycle that the SCR is turned on a. turn on angle, b. firing angle, c. conduction angle, d. firing delay angle

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