d. Determine the minimum value of R to ensure that the Zener diode is in the "on" state. Rs 220 Ω IR Vz = 10 V RL VL 20 V = 400 mW PZmax FIG. 2.186 Problem 42.
d. Determine the minimum value of R to ensure that the Zener diode is in the "on" state. Rs 220 Ω IR Vz = 10 V RL VL 20 V = 400 mW PZmax FIG. 2.186 Problem 42.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Question
Please answer only D of number 42
Transcribed Image Text:*42. a. Determine VL, IL, Iz, and IR for the network of Fig. 2.186 if R1 = 180 N.
b. Repeat part (a) if R1, = 470 N.
c. Determine the value of R, that will establish maximum power conditions for the Zener diode.
d. Determine the minimum value of R to ensure that the Zener diode is in the "on" state.
%3D
Rs
220 2
IR
Vz = 10 V
RL
VL
20 V
= 400 mW
PZmax
FIG. 2.186
Problem 42.
*43. a. Design the network of Fig. 2.187 to maintain Vi at 12 V for a load variation (I,) from 0 mA
to 200 mA. That is, determine Rs and Vz.
b. Determine Pz max for the Zener diode of part (a).
*44. For the network of Fig. 2.188, determine the range of Vị that will maintain V, at 8 V and not
exceed the maximum power rating of the Zener diode.
Rs
Rs
V, o w
91 2
16 Vo
Vz = 8 V
0.22 k2
Vz
RL
= 400 mW
PZ max
RL
FIG. 2.188
FIG. 2.187
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