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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
349
19.17 Input and Output Resistance
The theory of the effects of feedback on input and output resistance
is given in Sec.
12.5;
now we can glance at it again with particular
reference to amplifiers. Usually we would be glad to increase the
input resistance of a bipolar transistor so as to make it as nearly as
possible voltage-operated, more like an
f.e.t.
or valve. We saw in
Sec.
12.9
how a great increase is obtainable by working it in
common-collector (or emitter-follower) mode, and in Sec.
19.14
a
further increase by using a pair of transistors in this way. The effect
is produced by what amounts to total negative feedback; all the
outpu ...
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Publisher Resources

ISBN: 9781483105574