This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Neon bulb relaxation oscillator hysteresis curve.svg characteristic curve of neon bulb relaxation oscillator right showing the hysteresis loop abcd of the oscillation and the resulting voltage and current waveforms left neon bulb relaxation oscillator consists of capacitor which is charged from voltage source Vbbeebbe Information