In the space provided below, draw the Thévenin equivalent circuit. Show on your drawing the measured Thévenin voltage and resistance.
Mentally replace the voltage source with a short (zero ohms). Compute the resistance between the A-B terminals. This is the computed Thévenin resistance for this circuit. Then disconnect the voltage source and replace it with a jumper. Measure the actual Thévenin resistance of the circuit. Record your computed and measured Thévenin resistance in Table 4-10.
Remove the load resistor from the circuit. Calculate the open circuit voltage at the A-B terminals. This open circuit voltage is the Thévenin voltage for this circuit. Record the computed open circuit voltage in Table 4-10 as 𝑉𝑇ℎ.