Thevenin’s theorem states that a linear two-terminal circuit can be replaced by an equivalent circuit consisting of a voltage source VTh in series with a resistor RTh , where VTh is the open-circuit voltage at the terminals and RThis the input or equivalent resistance at the terminals when the independent sources are removed.
The method of removing sources has been described in Norton's Theorem. The steps for getting the Thevenin equivalent resistant is again the same as the process for getting Norton's equivalent resistance. The method for getting the Thevenin's equivalent voltage will be described in the example below..
NB: This Example has been taken from www.electricaltechnology.org
Qn. Find the Thevenin Equivalent Circuit across A-B and determine the load current.
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