What are the steps to follow Thevenin’s Theorem?
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To apply Thevenin’s Theorem, first remove the load from the circuit and calculate the open-circuit voltage across the terminals, which is the Thevenin voltage (Vth). Next, find the Thevenin resistance (Rth) by determining the equivalent resistance seen from the terminals with all sources turned off. Construct the Thevenin equivalent circuit by replacing the original circuit with a voltage source (Vth) in series with a resistor (Rth). Finally, reconnect the load to the simplified circuit for further analysis.
The main steps are:
Find the voltage of the Thevenin source by detaching the load resistor from the given circuit, and measuring the voltage over the open connection junctions where the load resistor is connected.
Calculate the Thevenin resistance by detaching all the power sources in the original electrical circuit (current sources open and voltage sources shorted), and measuring the total resistance across the open connection points.
Draw the derived Thevenin circuit, with the Thevenin resistance in series with the Thevenin voltage source.
Analyse current and voltage for the load resistor following the laws of series electrical circuits.