DC Network Theorems Unit 9 – Thevenin/Norton Conversion
Exercise 1 – Thevenin to Norton Conversion
EXERCISE OBJECTIVE
When you have completed this exercise, you will be able to convert a voltage source to a current
source. You will verify your results by comparing calculated and measured data.
DISCUSSION
- When Thevenin’s theorem is applied to a network it is reduced to an equivalent constant
voltage source (VTH). - The Thevenin equivalent resistance becomes the internal resistance of the constant voltage
source. - Convert this voltage source to a current source by applying Ohm’s law.
- The constant current (IN) provided by the source is VTH / RTH and its parallel internal
resistance (RN) is equal to RTH. - This is a Norton constant current source.