How does a pulse generator work?

A pulse generator creates electrical pulses by switching a circuit on and off at specified intervals. It typically uses electronic components like oscillators, transistors, or digital logic to generate a repetitive square wave or other waveform. The output can be adjusted in terms of frequency, amplitude, and pulse width, allowing it to be used in various applications such as testing, signal processing, and timing. The resulting pulses can be used to trigger other devices or systems in electronic circuits.