3.4. Thevenin Equivalent Circuit

Try these first

1. 1.

   What is Thevenin's voltage?

   Hint

   Think about what voltage would be measured without any load.

2. 2.

   How do you calculate Thevenin resistance?

   Hint

   What happens to a voltage source when it is turned off?

3. 3.

   What represents the Thevenin equivalent voltage?

   • Open-circuit voltage
   • Short-circuit current
   • Total resistance

   Hint

   Think of what voltage you would see without any load connected.

4. 4.

   True or False: Thevenin's theorem only applies to DC circuits.

   • True
   • False

   Hint

   Recall what we discussed about AC circuits.

5. 5.

   Given a combination of resistors in parallel and a voltage source, calculate the Thevenin equivalent voltage and resistance across the output terminals.

   Hint

   Use nodal or mesh analysis if necessary.

6. 6.

   For a circuit with both a sinusoidal input and a DC bias, calculate the Thevenin equivalents and superimpose results for analysis.

   Hint

   Use phasors for AC analysis!