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a) To what value R must be adjusted in the following circuit to make I, = 65 mA. Assume V, =18 V at 55 mA and z, = 21 Q. What is the Zener voltage at 70° C, if it has a positive TC of 0.07 %/°c? 24 V

a) To what value R must be adjusted in the following circuit to make I, = 65 mA. Assume V, =18 V at 55 mA and z, = 21 Q. What is the Zener voltage at 70° C, if it has a positive TC of 0.07 %/°c? 24 V

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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a) To what value R must be adjusted in the following circuit to make I, = 65 mA. Assume V, =18 V at 55 mA and Z, = 21 Q. What is the zener voltage at 70° C, if it has a positive TC of 0.07 %/°c? R 24 V b) Using a Complete diode model, find the diode current (I,), diode voltage (V,), and output voltage (Vo) for the diode circuit shown below. Given that: V, = 18 V, R, =2.5 ka, Barier Potential V = 0.3 v , and r = 60 Q. If the diode was reversed and I, = 200 UA, Determine the diode reverse voltage (V) + Vo lo Vs RL Vo
Transcribed Image Text:a) To what value R must be adjusted in the following circuit to make I, = 65 mA. Assume V, =18 V at 55 mA and Z, = 21 Q. What is the zener voltage at 70° C, if it has a positive TC of 0.07 %/°c? R 24 V b) Using a Complete diode model, find the diode current (I,), diode voltage (V,), and output voltage (Vo) for the diode circuit shown below. Given that: V, = 18 V, R, =2.5 ka, Barier Potential V = 0.3 v , and r = 60 Q. If the diode was reversed and I, = 200 UA, Determine the diode reverse voltage (V) + Vo lo Vs RL Vo
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