DC Network Theorems Unit 7 – Thevenin Circuits
Exercise 1 – Thevenizing a Single Source Network
EXERCISE OBJECTIVE
When you have completed this exercise, you will be able to simplify a single-source network by
applying Thevenin's theorem. You will verify your results by comparing calculated and
measured values.
DISCUSSION
- The network consists of R1, R2 and VS.
- RL is the network load.
- With RL removed from the circuit, determine the open circuit voltage (VTH) across points A
and B (the load). - With RL removed and short the voltage source, determine the equivalent resistance (RTH)
looking into the circuit from points A and B. - VTH, RTH and RL form a simple series circuit known as Thevenin’s equivalent circuit.