please help me in this question 3-) The zener regulator shown in Figure 3 uses a current-amplifying device (CA) with the followingcharacteristics:V2 = 0.6 V, 1, =100/,where I, is the input current at terminal 1, 1, is the output current at terminal 2 and V, is the voltage betweenterminals 1 and 2. The Zener diode has the i-v characteristic shown. The maximum Zener current is1max = 50 mA (if the Zener current exceeds this maximum it is damaged).(a) Find the output voltage V, for (i) V, = 10 V, and (ii) V, = 12 v.(b) Find the maximum value of V, at which the Zener diode is not damaged.Figure 3+200 Ω-V 20CAVVi2 212V= 6 V20r. = 20 2V.slope = 1/r.2 knŹR,=20 2 V.

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Engineering

Electrical Engineering

please help me in this question

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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In a Zener regulated DC power supply, the input to the regulator varies between 15 V and 19 V. The magnitude of the series resistor in the regulator circuit is 40 Ω, and the load draws a constant current of 100 mA at 9 V. Use the ideal Zener diode model. The Zener diode specifications are given as : VZ(N) = 9 V, IZ(min) = 25 mA, and IZ(max) = 200 mA. 1) What is the minimum current that will flow through the zener diode? 2) What is the maximum power that will be dissipated by the zenere diode? 3) What is the maximum power dissipated by the series resistor?
2b) A regulator curcuit needs to be designed with an input power supply which has a nominal value of V_PS=20 V and can vary by ± %25 and nominal output voltage of 10 volts. For this purpose a zener diode is employed with specifications given; power rating of 1 W, 10V drop at Iz=25 mA, output load current is to vary between I(subscript L)=0-20 mA and zener resistance of r_Z=5Ω i) If the minimum Zener current is to be I_Z=5 mA, determine the required R_S ii) Determine the maximum variation in output voltage iii) Determine the regulation percent
Q1: In this Zener diode regulator, the source voltage varies from 6 V to 14 V. Assume that the load current varies between 1 mA and 35 mA, and that the diode is an ideal 4 V Zener diode. What is the largest allowable resistance that will ensure the load voltage remains constant with variations in load current and source voltage? Please enter your answer to 3 significant figures. Q2: Given the circuit design for a Zener diode regulator in the Ques 1, what is the maximum power that will be dissipated by the Rs resistor? You are told that the source voltage Vs varies from 6 V to 11 V, the load current il varies between 2 mA and 45 mA, and the diode is an ideal 3 V Zener diode. You will need to recalculate the maximum allowable resistance Rs with your new values, as part of this question. Please enter your answer to 3 significant figures, and in Watts.
Given the schematic below, assume D1 and D2 are silicon with forward voltages of 0.7V. Find the following (with solutions) a) Conditions required wherein none of the diodes are conducting b) If both diodes are not conduction, what is Vo? Express in terms of Vi c) Plot the overall relationship of Vo and Vi in the coordinate system shown below. Remember, you are to plot the transfer characteristics of the circuit.
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…
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.) Please plot the graph. 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…
A Zener diode is connected in a voltage regulator circuit as shown in figure.2. The Zener voltage at Iz = 0 is 15V and Zener incremental resistance 0.2Ω. (a) Determine the value of Ri such that Zener diode remains in breakdown if the load current IL varies from 50 to 500 mA and if the input voltage VI varies from 20 to 30 V. Assume Izmin =0.2Izmax(b)Determine the power rating of each element in a circuit.
For the ideal-diode clipper circuit given below, VS = 12.sinωt V. Determine the output voltage Vout and sketch this function. Remove the short circuit between points x and y, and replace it with a 2kΩ Resistor. Find the range of values of VS for; D1 and D2 are OFF D1 is ON and D2 is OFF D1 is OFF and D2 is ON Is it possible for both D1 and D2 to be ON?
A Zener diode is connected in a voltage regulator circuit as shown in figure.2. The Zener voltage at Iz = 0 is 15V and Zener incremental resistance 0.2Ω. (a) Determine the value of Ri such that Zener diode remains in breakdown if the load current IL varies from 50 to 500 mA and if the input voltage VI varies from 20 to 30 V. Assume Izmin =0.2Izmax
Given the circuit design for a Zener diode regulator in the previous question, what is the maximum power that will be dissipated by the Rs resistor? You are told that the source voltage Vs varies from 6 V to 11 V, the load current il varies between 2 mA and 45 mA, and the diode is an ideal 3 V Zener diode. You will need to recalculate the maximum allowable resistance Rs with your new values, as part of this question. Please enter your answer to 3 significant figures, and in Watts.
Design a 15 V Zener regulator for the following conditions: 1) The load current IL ranges from 200 mA to 300 mA.2) The source voltage ranges from 21 V to 25 V. Based on your design results,a) Draw the Zener regulator circuit.b) Calculate the power ratings for both Zener diode and resistor Ri
i) The equation above contains really only three variables in it: Id, Vd, and T. All the other terms are constants. Since in most cases we assume temperature is fairly constant as well, we are really only dealing with two variables: diode current and diode voltage. Based on this realization, re-write the equation as proportionality rather than equality, showing how the two variables of diode current and voltage relate ii) Based on this simplified equation, what would an I vs V graph for a PN junction look like? How does this graph compare against the I vs V graph for a resistor? iii) When "P" and "N" type semiconductor pieces are brought into close contact, free electrons from the "N" piece will rush over to fill holes in the "P" piece, creating a zone on both sides of the contact region devoid of charge carriers. What is this zone called, and what are its electrical characteristics? iv) What happens to the thickness of the region in a PN junction (answer above) when an external…