PURPOSE: To demonstrate resonance in an RLC circuit.
DESCRIPTION: Using the circuit below, the frequency of the oscillator is swept to find the resonance. Both the signal from the oscillator and the signal across the resistor are displayed on the dual trace scope. The capacitor and the resistor in the circuit are variable. The increase in amplitude of the signal across the resistor and the phase shift at resonance are both easily seen.
EQUIPMENT: RLC circuit, oscillator, and dual trace scope.
SETUP TIME: 5 min.
Updated by Jun Qi in 3/13/2000