R1 9V R2 ZENER 3k
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter17: Commercial And Industrial Air-conditioning Control Systems
Section: Chapter Questions
Problem 22RQ
Related questions
Question
In given regulator circuit, zener voltage is 4.2V and zener power is Pw is 105mW.
Calculate R1 resistor value range to circuit work correctly.
![R1
+
+ 9V
R2
ZENER
3k](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F00e798c5-7074-4965-9b84-18a804531b7d%2F13745f3a-1f22-43af-939b-8eefbf169a4c%2Fs6ajn5c_processed.png&w=3840&q=75)
Transcribed Image Text:R1
+
+ 9V
R2
ZENER
3k
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