
Circuit Theorems
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6.4 NORTON’S THEOREM
Norton’s theorem (Edward Lawry Norton, American electronicsengineer, 1898–
1983)states that “any linear network, no matter how complex, made of a com-
bination of independent (current and/or voltage) sources and resistors, from the
viewpoint of any pair of terminals ‘A’ and ‘B,’ is equivalent to a single current
source
N
with a single parallel resistor
N
” (Figure 6.18).
➜ Norton’s resistance
N
is obtained in an analogous way to that of Thévenin’s.
➜ The current value of the source
i
is equal to the one that can be measured
or deduced when the terminals “A” and “B” are shorted.
The Norton↔Thévenin equ ...