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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
234 Circuit calculations pocket book
(f) Reflected resistance
If a transformer has a resistive load R
L
, as shown in Figure 13.2,
then
R
and
and
Let
fl/AO
2
V/,/Vp
2
7?!
is the value of the effective resistive load presented to the
primary source. It is the value of the resistance reflected from the
secondary into the primary due to the load R
L
. Note that since
iV
2
'Nl
N
2
1
N
2
R
2
= R
L
n where n is the turns ratio
13.3 Maximum power transfer
It was shown in Section 13.2(f) that the reflected resistance from the
secondary to the primary is
and if the turns ratio of the transformer is chosen so that this
resistance is equal to the internal resistanc ...
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Publisher Resources

ISBN: 9781483101132