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Thevenin’s Theorem – In-Class Worksheet
Spring, 2002
Thevenin’s Theorem states that any two-terminal bilateral dc network can be reduced to a
circuit consisting of a voltage source and a series resistance which will provide
equivalence at the load terminals.
Determining the Thevenin Equivalent of a Network:
1.
Remove that portion of the network across which the Thevenin equivalent circuit
is to be found, i.e, remove the load.
2.
Mark the terminals of the remaining two-terminal network.
3.
Determine the Thevenin voltage VTH by finding the open circuit voltage between
the marked terminals.
4.
Determine the Thevenin resistance RTH by first replacing all sources with their
internal resistance. Assuming ideal sources, set all voltage sources to zero
(replace with a short) and open all current sources. Find the resultant resistance
between the two marked terminals.
5.
Draw and label the Thevenin Equivalent Circuit.
Thevenin’s Theorem – In-Class Worksheet
Spring, 2002