DC Network Theorems Unit 8 – Thevenizing a Bridge Circuit
Exercise 2 – Thevenizing Bridge Circuit Voltage
EXERCISE OBJECTIVE
When you have completed this exercise you will be able to calculate the Thevenin equivalent
voltage (VTH) of a bridge circuit. You will verify your results by comparing calculated and
measured data.
DISCUSSION
- To determine the Thevenin voltage, remove the load resistor.
- Use Ohm’s law or the voltage divider equation to calculate the voltage drop across the output
terminals of the bridge circuit. - The Thevenin equivalent circuit generates the same voltage and current across the load
resistor as the bridge network. - In the Thevenin’s equivalent circuit, use the voltage divider equation to determine the voltage
across the load.