April 2016
Intermediate to advanced
384 pages
12h 56m
English
Content preview from Newnes Circuit Calculations Pocket Book
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Network theorems 77
3ft
6ft
2ft
5ft
Figure
4.54
The 7.2-ft resistor is in parallel with the 5-ft resistor, giving
7.2 x 5
= 2.95 ft
7.2 + 5
The equivalent Thevenin's circuit is shown in Figure 4.55 where
8.36
/ = = 1.05 A
5 + 2.95
This result confirms the difference between l
{
and I
2
in Example 2.
5ft 2.95 ft
8.36 V'
Figure
4.55
4.4
Norton's theorem
Current in a load resistor connected between two points A and B of
an active network is the same as if the load resistor was connected to
a constant current generator, whose generated current is equal to
the short circuit current measured between A and B. This constant
current generator has infinit ...
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