Thevenin Equivalence

AN EXAMPLE OF DETERMINING THE THEVENIN EQUIVALENT

Part B is irrelevant.

The voltage V_ab will be the value of the

Thevenin equivalent source.

What is an efficient technique to compute the

open circuit voltage?

Now for the short circuit current

Lets try source superposition

When the current source is open the

current through the short circuit is

When the voltage source is set to zero,

the current through the short circuit is

To compute the Thevenin resistance we

use

For this case the Thevenin resistance can be computed as

the resistance from a - b when all independent sources have been

set to zero

Is this a

general

result?

NODE

ANALYSIS