Introduction
- However, any real attempt to construct a LC circuit must account for the resistance of the inductor. This resistance will cause oscillations to damp out.
- Question: Is there any way to modify the circuit above to sustain the oscillations without damping?
Answer: Yes, if we can supply energy at the rate the resistor dissipates it! How? A sinusoidally varying emf (AC generator) will sustain sinusoidal current oscillations!
- Last time we discovered that a LC circuit was a natural oscillator.
- Plus: We are not limited to “driving” the circuit only at its natural resonant frequency that we found last time…..