Investigate and explain the characteristics of ideal and real voltage and current sources.

You are to design a simple power supply made up of recycled electrical parts to drive a motor. To simplify the design, you can model the running motor as a load resistor. The motor is rated for 20V and draws 100mA when running. 120Vrms Resistor 60HZ Vp Vs 0° + C1 1250pF a = 3.75 Zener "Motor BR805D а. If you were to model the running motor as a resistor what would the resistor value be? b. The transformer has a turns ratio a = 3.75. What are the RMS and Peak values of the secondary voltage? What is the peak voltage after the diode rectifier bridge (without C1, Zener, resistor, or load)? Draw the waveform. d. Determine the ripple voltage (VRIPPLE) without the Zener diode in the circuit (assume the Resistor above is 1002). Determine the part number of a suitable Zener diode to provide an output voltage of approximately 20v. (i.e. 1N4 C. е. 2.

Consider the following diode circuit. 1kQ Vs 10 Vs VD t(ns) 10 -5 i. Calculate the current at t=0* in the circuit. ii. Calculate lş and IR when the diode is switched off at t=10 ns. Assume Von=0.7 V. i. Write the type of capacitances in a diode.

24 A M0-volt forwurd voltage is applied to a silicon diode in series with a load of 3 k2. Draw the de kud line. What is the slope of the line? Solution The value of voltage Vy across diode is given by Vy V-R Since R and V are fixod values, this equation can by represented by a straight line on V-ly characteristics of diode; the is de kud li. When lg 0, maximum voltage across the diode V 30 V. This is point B(30, 0). 10 mA 30 V Fig. 2.25 Problem 2.4.

With regard to the n-type extrinsic semiconductors, which one of the following explanations is not correct?

B. Define ( resistance, reactance, impedance. rks rks

While constructing a Bridge rectifier, the designer mistakenly has swapped the terminals of D3 as shown in the figure below, where • Diode D3 is damaged so that it is always open circuit regardless of the applied voltage. • vs(t) is a sinusoidal signal with a peak value (Vs = 5 V). • Diodes are modelled using the constant voltage model with VDO = 0.7 V • The ac line voltage has an rms value of 120 V and a frequency (f) = 60 Hz • The resistance RL = 10 kohm. a) Calculate the transformer turns ratio (N1/N2) if vs(t) is obtained from the secondary side of the transformer whose primary side is connected to the ac line voltage (which has a 120 V rms value). b) Plot in the same graph the input signal vs(t) and the output signal vout(t) (show all details including amplitudes, time instances, etc.) c) Calculate the rms values of the output signal vout(t). (hint: sin2 (x) = 0.5(1- cos(2x))) d) If a capacitor C = 3.58 µF is connected across R = 10 kohm, repeat (b) in a new graph e) With the…

Analytical Problem: Show all work neatly. 15) The plot below shows the time dependent voltage trace for an unknown ac- voltage source. Using a ruler and pencil, and calculations as required, precisely determine the following quantities for this voltage waveform: 1) the maximum peak-to-peak voltage amplitude, Vp, 2) the voltage amplitude Vo, 3) the rms voltage, V.ms, 4) the waveform period; and 5) the frequency of the ac-voltage source. Show all work on the plot, using a pencil and ruler (electronic equivalent), including all calculations. 160 120 80 40 2 4 8 10 12 14 16 18 20 Time (mSec) -40 -80 -120 -160 (10)soƆºA = (1)A

Shown below is a diode circuit. If the input signal Vs = 31 Vp-p and the DC voltage Vdc = 8 V, what is the output voltage (in volts) of the circuit during the negative alteration? No need to show your solution. Just write your numeric answer on the space provided. Round off your answer to 2 decimal places. C1 ... + Vdc 1.0kn Vo Vs Si D1

Make a comparative chart related to electrical conduction in materials, that is, comparing metals (and other conductors) / semiconductors / superconductors / insulators. Additional, on another page, an application of each of them