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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
180
never be forgotten. Looking at Fig. 11.3 we see that if R were
increased to a much larger value the load line would have to swing
round until it was nearly horizontal, cutting the valve curves at
points where their decreased slopes would mean much larger values
I I |μ OF
VALVE
(THEORETICAL
UPPER
LIMIT
OF
AM
PLIFICATIO
f
Ν.
fN—ι
ι ;
! 1
-44t
s
x
1~
4-
*
Ν
—i~
ι
\
c
ο
C
Σ
α
Σ
ANODE
RESISTANCE,/?
Fig. 11.6 The full line shows how the voltage amplification depends on the value of
load resistance R. It is calculated for a valve with μ = 39 and r
a
= 14.5kQ. The dashed
line shows the peak milliwatts delivered to R for a grid input of 1 V pea
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Publisher Resources

ISBN: 9781483105574