K7-31
Demonstrate over/under/critical damping in a series RLC circuit.
The capacitor in an RLC series circuit is charged and then quickly allowed to discharge through the circuit. The series resistor is a potentiometer that can be adjusted to produce underdamping, critical damping, or overdamping, shown left-to-right in that order on the circuit assembly photograph above. The voltage across the capacitor is can be displayed on an oscilloscope (not shown).