+10 V IREF lo2 Q2 20 A R2
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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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?

Transcribed Image Text:+10 V
IREF
lo2
Q2
20 A
R2
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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