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Answer Sheet Electronics

This document contains 10 questions about analyzing transistor circuits to determine voltages, currents, and operating regions. It provides circuit diagrams and asks the reader to calculate various transistor terminal voltages and currents, determine the operating region of transistors in given configurations, and identify component values needed to design circuits with specified bias points.

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Ayat Nabil
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379 views3 pages

Answer Sheet Electronics

This document contains 10 questions about analyzing transistor circuits to determine voltages, currents, and operating regions. It provides circuit diagrams and asks the reader to calculate various transistor terminal voltages and currents, determine the operating region of transistors in given configurations, and identify component values needed to design circuits with specified bias points.

Uploaded by

Ayat Nabil
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Sheet 1

1- Assume that you wish to bias the transistor in


Figure(1) with IB=20µA. To what voltage must you
change the VBB supply? What are IC and VCE at the
Q-point, given that βDC=50?

2- Design a biased-transistor circuit using VBB=VCC=10V for a Q-point of


IC=5mA and VCE=4V Assume βDC=100. The design involves finding RB, RC,
and the minimum power rating of the transistor. (The actual power rating
should be greater.) Sketch the circuit.

3- Determine whether the transistor in Figure(2) is


biased in cutoff, saturation, or the linear region.
Remember that . IC =βDCIB is valid only in the linear
region
4- From the collector characteristic curves and the dc
load line in
Figure(3), determine the following:
(a) Collector saturation current
(b) VCE at cutoff
(c) Q-point values of IB, IC, and VCE

5- 14. Determine all transistor terminal voltages with


respect to ground in Figure(4).

6- (a) Determine VB in Figure(5).


(b) How is VB affected if the transistor is replaced by
one with a βDC=50?
7- Analyze the circuit in Figure(6) to determine the correct
voltages at the transistor terminals with respect to ground.
Assume βDC=100

8- Determine VB, VC, and IC in Figure(7).

9-

10-

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