IFE 60 k2 Qs 44 k2 30 k2 -5.2 V
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
The current source for a current switch is implemented
with a transistor and three resistors, as shown.
What is the current IEE? What is the
minimum permissible value of VREF if transistor QS
is to remain in the forward-active region? Assume
that βF is large.
![IFE
60 k2
Qs
44 k2
30 k2
-5.2 V](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa6b56f7d-2058-49e9-9510-756404c6bccb%2F8ca3258c-d99c-4808-ae09-f4dd695d0300%2F2cwg0nc.jpeg&w=3840&q=75)
Transcribed Image Text:IFE
60 k2
Qs
44 k2
30 k2
-5.2 V
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