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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
Network theorems 83
7,-/2
A
+
2a
he
4ft
+
4V
B
Figure
4.67
he
= /i " h = 2 - 1 = 1 A
Removing the two sources in Figure 4.67 and looking in at a break
between A and B the resistance is
2x4
= 1.333 ft
2 + 4
Norton's equivalent circuit is shown in Figure 4.68. The current will
divide between the two branches in the ratio 1.333 : 8.
1 x 1.333
Current / in the 8 ft = = 0.142 A
8 + 1.333
The circuit is identical to Figure 4.10 and confirms the answer
shown in Figure 4.11.
Figure
4.68
4.5
Maximum power transfer
Maximum power is transferred from a source of
e.m.f.
to a load,
when the load resistance equals the internal resistance of the source.
Example ...
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Publisher Resources

ISBN: 9781483101132