7.04 Thevenin's theorem example.

Example.

Produce a Thevenin equivalent circuit for the circuit shown below.

Thevenin example

Finding the voltage for the equivalent circuit.

Finding the resistance for the equivalent circuit.

To find the value for the internal resistance first: short out the power supply.

Thevenin example



Finding the resistance is is usually easier if we then redraw the circuit, so that the connection between the resistors can be seen more easily.

Thevenin example

This gives the Thevenin equivalent circuit shown below.

Thevenin example