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Foundations of Wireless and Electronics, 10th Edition
book

Foundations of Wireless and Electronics, 10th Edition

by M. G. Scroggie, S. W. Amos
October 2013
Intermediate to advanced content levelIntermediate to advanced
570 pages
27h 46m
English
Newnes
Content preview from Foundations of Wireless and Electronics, 10th Edition
208
Current gain, A
x
Voltage gain, A
x
,
Af
h
0
R
L
+ 1
Ai(A
0
+ G
L
)-A
r
A
f
Power gain, Α
Ό
= A-
}
A
%
h
r
h
Input resistance, r
m
= h
{
-
Ί
r
'
A
0
+ G
L
A
r
A
f
Output conductance, g
ou(
= Λ
0
- , "
r
ρ
«j + K
G
Output resistance,
r
oul
APPROXIMATIONS (R
L
or /?
G
=10
2
- 10
4
unless stated)
1
Soul
common emitter
common collector
common base
Soul
h *
L
h
2
A
0
(/?
G
above
3 x 10
3
)
1 (R
L
above 10)
/Ii (/?
L
10
3
- 10
4
)
-h
rc
h
fc
R
L
1 (/?
L
uptol0
5
)
Afe
^
Λ
ν
(#
L
uptol0
5
)
A
ob
(/?
L
above 3 χ 10
3
)
12.12 F.E.Ts and Valves
With their near-infinite low-frequency input resistance, field-effect
transistors resemble valves much more than they resemble the bi-
polar transistors we have been considering ...
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Publisher Resources

ISBN: 9781483105574