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- How is a solid-state diode tested? Explain.Given the clamper circuit below, assume that the value of R and C are large enough so the voltage across the capacitor does not change significantly during the interval of time. a. Using the simplified diode model, simulate the action of the circuit when the diode is in forward and reverse bias condition and measure its output voltage. b. Draw the output waveform of the circuit. VIN +8V ER 1.3V. -8VMake the described voltage multiplier circuit, determine the voltage charge in each capacitor, and the output voltage of the circuit. Plot the output waveform in proper phase alignment with the input voltage. Indicate the peak values with the support of your solutions. Use silicon diodes in your analysis and an input V=10 Vrms. a) Half-wave voltage doubler b.) Full-wave voltage doubler
- 5) The figure below illustrates a simple voltage threshold detection circuit. To understand how it operates, we will analyze its behavior based on the simple constant voltage drop model for both diodes. Assume the Zener diode (Z1) only conducts when its breakdown voltage of 10V is reached. Di is a red light emitting diode (LED). Assume it conducts after its forward bias voltage of 1.8V is reached. Vin is unknown. Assume Zj acts as a perfect Zener diode (without series resistance). What voltage does Vin have to reach before there is a current through R¡? What voltage must Vin reach before current flows through R2? Write an equation for the current through Zi in terms of Vin, Rị and R2 that is valid when Vin is high enough for both diodes to be conducting. a. b. c. R2 Vino R1 LEDConsidering a clamper circuit, where capacitance C, load R, the built-in voltage of diode are unknown, which is the correct statement? The DC level shifts up The DC level of the signal changes The shape of signal changes The peak-to-peak value of signal changesGiven the clamper circuit below, assume that the value of R and C are large enough sothe voltage across the capacitor does not change significantly during the interval of time.a. Using the simplified diode model, simulate the action of the circuit when the Silicon diode isin forward and reverse bias condition and measure the corresponding output voltage.b. Draw the complete output waveform of the circuit
- 3) Demonstrate clipping of negative waves with an inverted diode in the output. A circuit which removes the peak of a waveform is known as a clipper. Show a negative clipper. Produce a schematic diagram with LTspice schematic capture program. During the positive half cycle of the 5 V peak input, the diode is reversed biased. The diode does not conduct. It is as if the diode were not there. Show the positive half cycle is unchanged at the output V(2). Show the output positive peaks overlays the input sinewave V(1). Use in the LTSPICE display module, the command "plot v(1)+1)" accomplishes this. Voltage values: Resistor valuse: 1 ΚΩ DC offset: 0 V Amplitude: 5 V Freq: 1 KHzAnalyze the ON/OFF states of all diodes (D1 and D2) inthis circuit, using the ideal-diode model.a) Use the diode’s characteristic equation,ID=Is exp(VD/VT), to determine the currentsourceIso that the output voltage is 1.5 V. b) If a load is attached to the output that draws 1 mA, what is the output voltage? c) If the circuit heats up to 40◦C, what is the output voltage without a load?
- • A Si diode at a temperature of 25°C has VD = 0.7V at Is = 10nA. The temperature is raised to 125°C. 1. Calculate ID at 25°C. 2. What is effect of rise in temperature on VD & IS 3. Calculate ID at 125°C.What voltage is boosted at the output of a multiplier. a) average b) rms c) peak d) instantaneous Which assumption is not used in the analysis of multipliers? a) a capacitor will not discharge b) start with the cycle of the source that will forward bias the nearest diode c) the output will always be multiplied d) a single diode is forward biased at a time A voltage multiplier a) multiplies the output voltage b) has very high voltage and low current c) can employ inductors d) may not have equal numbers of diodes and capacitors A voltage regulator maintains constant voltage at the load regardless of variations at a) the input and output b) the load c) source d) in the environment Between a lower percent regulation and a higher one, which is better? a) lower b) higher) State whether the following statements are true or false and then correct the false ones. i. In pn-junction diodes, the reverse saturation current stays constant regardless of the ambient temperature. i Under steady state, the overall charge of the depletion region in a diode equals zero. The peak inverse voltage of a pn-diode decreases with temperature. The reverse recovery time of a diode determines the magnitude of the forward diode current.