Plot the current flowing through R, as a function of Vin for the circuit. Assume a constant-voltage diode model. D, V8 oVout Vino Wr R, R2 Code:2021Q34
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- How is a solid-state diode tested? Explain.consider the figure below that shows an approximated reverse recovery turn-off characteristics for a power diode. Show that the following relation can express the total reverse recovery charge, Qrr = 1/2(trr*ts1) di1/dt =1/2(trr*ts21) di2/dt * ip Isl 1s2! -Ir0:- Consider the circuit in Figure a) What type of circuit is this? b) Find and Sketch the voltage waveform across RL, assume the diodes are practical. c) If 100uf capacitor parallel with the resistor, calculate the ripple is connected factor I O o D
- A- If V, is a sinusoidal voltage with Vm = 40 V, and V= 15 V. Plot the waveform of the output voltage in each of the following clippers circuits assuming ideal diodes. B- Repeat part (A) if the diodes are silicon diodes. R R R (a) (b) (c) (d)Q4) Determine and sketch the output voltage across the load resistor (RL) for the circuit shown below. (assume Si diodes) V_DC 0.75 0.25 V_SIN Y SIN as RL -1 v SOR V_SQR 0.75 -0.75 V_TRI V TRI asQ2/ Consider the circuit in below figure. What type of circuit is this? b. What is the total peak secondary voltage? c. Find the peak voltage across each half of the secondary. d. Sketch the voltage waveform across RL. e. What is the peak current through each diode? f. What is the PIV for each diode? а. 4:1 D1 120 V rms RL 1.0 kN 00400
- (c) Reverse recovery is a common problem in a diode. It can increase switching losses, increase forward voltage and induce voltage surge. (i) Explain how reverse recovery can increase switching losses in a diode. (ii) Figure Q1(c) shows that characteristic of reverse recovery in a diode. Based on the figure, calculate the peak reverse recovery current I, I (A) dls dt 30 A Q,, 1 us 3 us Figure Q1(c): The characteristic of reverse recovery in a diodeIf the positive cycle of the waveform for full wave bridge rectifier , Which of the diodes is working . ..... ...... 10:1 120 V ms Output 60 Hz Puec) RL 220 N Dz 1000µF O D1, D2 D3, D2 D4, D2 D1, D4 not all above D1, D3 elleeQ3) For the circuit shown in figure (2), assume the diode is ideal, answer the following: 1) Draw the output voltage then find the de output voltage. 2) If a capacitor 100uF is connected across RL load, Draw the output voltage then find de output voltage and Ripple Factor. 18:1 Vin 220V SOHz
- The following figure shows a Zener diode regulator designed to hold 5.0 V at the output. Assume the Zener resistance is zero and the Zener current ranges from 2 mA minimum (2x) to 30 mA maximum (IZM). What are the minimum and maximum input source voltages for these currents? Vs = ? R₁ W 560 02 Vz +5.0 V2. Figure A.1 shows I-V characteristics of two diodes, namely A and B. Diode A has higher dynamic resistance than diode B. UTM &UT ID 4 5UTM 3TM UTM UTM &UTM 5 UTM & UTM UTM 3 UTM 03 TM 6 UT 0.68 (a) UTM VD Figure A.1 State one possible reason why the diodes have different knee voltage values. UTM OM & UTM 3 UTM & TM (b) Based on Figure A.1, identify the knee voltage of UTM" TM 5 UTde BE UTMConsider an abrupt p-n diode with Na = 1018 cm 3 and Nd = 1016 cm³. a)Calculate the junction capacitance at zero bias. The diode area equals 10-4 cm?. Repeat the problem while treating the diode as a one-sided diode and calculate the relative error.