10 Zener Diodes *42. a. Determine V1, Iµ, Iz, and Ig for the network of Fig. 186 if R1 = 180 N. b. Repeat part (a) if R1 = 470 N. c. Determine the value of R1 that will establish maximum power conditions for the Zener diode. d. Determine the minimum value of R1 to ensure that the Zener diode is in the “on" state. Rs 220 2 IR Vz = 10 V Pzm- 400 mW 20 V RL VL FIG. 186 Problem 42. (d) In the absence of the Zener diode R, (20 V) V = 10 V = R¸ + 220 Q 10R, + 2200 = 20R, 10RĻ = 2200 R1= 220 Q

Electric Motor Control
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ISBN:9781133702818
Author:Herman
Publisher:Herman
Chapter59: Motor Startup And Troubleshooting Basics
Section: Chapter Questions
Problem 12SQ: How is a solid-state diode tested? Explain.
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ZENER DIODES: Answer letter D only. Answers are already GIVEN. I just need you to explain them in plain English. Draw additional circuits if necessary to state your point.

 

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10 Zener Diodes
*42. a. Determine VL, I1, Iz, and IR for the network of Fig. 186 if R1 = 180 N.
b. Repeat part (a) if R1 = 470 N.
c. Determine the value of R1 that will establish maximum power conditions for the Zener diode.
d. Determine the minimum value of R1 to ensure that the Zener diode is in the “on" state.
R$
IL
220 2
IR
Vz = 10 V
20 V
VL
= 400 mW
2max
FIG. 186
Problem 42.
(d) In the absence of the Zener diode
R, (20 V)
VL = 10 V =
R¸ + 220Q
10RĻ + 2200 = 20R1
10R, = 2200
R= 220 Q
Transcribed Image Text:10 Zener Diodes *42. a. Determine VL, I1, Iz, and IR for the network of Fig. 186 if R1 = 180 N. b. Repeat part (a) if R1 = 470 N. c. Determine the value of R1 that will establish maximum power conditions for the Zener diode. d. Determine the minimum value of R1 to ensure that the Zener diode is in the “on" state. R$ IL 220 2 IR Vz = 10 V 20 V VL = 400 mW 2max FIG. 186 Problem 42. (d) In the absence of the Zener diode R, (20 V) VL = 10 V = R¸ + 220Q 10RĻ + 2200 = 20R1 10R, = 2200 R= 220 Q
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