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Newnes Circuit Calculations Pocket Book
book

Newnes Circuit Calculations Pocket Book

by Thomas J. Davies
April 2016
Intermediate to advanced content levelIntermediate to advanced
384 pages
12h 56m
English
Newnes
Content preview from Newnes Circuit Calculations Pocket Book
Transistor amplifiers 269
0.45
Figure
15.8
(ii) I
c
VRL
0.5 0.55 0.6
Base-emitter
voltage
l/
BE
(mV)
8 x KT
3
A at P
8 x 10"
3
x 500 = 4 V
V
CE
= 10 - 4 = 6 V
(iii) h
XE
=•
0.6
/
B
30 x 10"
20 kft
0.65
(iv) h
OE
:
(v) h
FE
-
(vi) I
E
I
c
8 x 10"
3
Ic _ 8 x 1Q~
3
7
B
~ 30 x 10-
= 750 ft
= 267
= Ic + IB
30
= 8 +r = 8.03 mA
10
3
(See program 231, page 265.)
15.3 Common emitter - dynamic conditions
Section 15.2 has looked at the parameters associated with the d.c.
conditions of an amplifier circuit. Applying an alternating voltage to
an amplifier, in an arrangement such as the one shown in Figure
15.9,
means that voltages V
CE
and V
BE
and currents /
c
, 7
B
and 7
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Publisher Resources

ISBN: 9781483101132