Thevenin's Theorem states that it is possible to simplify any linear
circuit, no matter how complex, to an equivalent circuit with just a
single voltage source and series resistance connected to a load

You will get all the circuit diagrams and illustrative examples on Thevenin's Theorem in the following article,

http://www.ezdia.com/Thevenin_Theore...ent.do?id 51

# Thevenin's Theorem is a way to reduce a network to an equivalent circuit composed of a single voltage source, series resistance, and series load. # Steps to follow for Thevenin's Theorem: # (1) Find the Thevenin source voltage by removing the load resistor from the original circuit and calculating voltage across the open connection points where the load resistor used to be. # (2) Find the Thevenin resistance by removing all power sources in the original circuit (voltage sources shorted and current sources open) and calculating total resistance between the open connection points. # (3) Draw the Thevenin equivalent circuit, with the Thevenin voltage source in series with the Thevenin resistance. The load resistor re- attaches between the two open points of the equivalent circuit. # (4) Analyze voltage and current for the load resistor following the rules for series circuits.

You will get all the circuit diagrams and illustrative examples on Thevenin's Theorem in the following article,

http://www.ezdia.com/Thevenin_Theore...ent.do?id 51

# Thevenin's Theorem is a way to reduce a network to an equivalent circuit composed of a single voltage source, series resistance, and series load. # Steps to follow for Thevenin's Theorem: # (1) Find the Thevenin source voltage by removing the load resistor from the original circuit and calculating voltage across the open connection points where the load resistor used to be. # (2) Find the Thevenin resistance by removing all power sources in the original circuit (voltage sources shorted and current sources open) and calculating total resistance between the open connection points. # (3) Draw the Thevenin equivalent circuit, with the Thevenin voltage source in series with the Thevenin resistance. The load resistor re- attaches between the two open points of the equivalent circuit. # (4) Analyze voltage and current for the load resistor following the rules for series circuits.