+10 V IREF lo2 Q2 20 A R2
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter12: Electronic Control Devices
Section: Chapter Questions
Problem 2RQ: Semiconductors are ____________.
conductors
insulators
half conductors
none of the above
Related questions
Question
IREF = 68 μA as shown. (a) What value of R2 is required to set IO2 =16 μA if the area Q1 is changed to 2A? (b) If the area of Q2 is changed to 10A?
Expert Solution
Step 1
IREF = 68 µA
IO = 16 µA
Given circuit is a wilder current source.
The resistance R2 is given as,
Part (a) even if the area of the transistor is changed, if the transistors are connected in series, same amount of current flows through them. Thus,
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