The speaker’s diaphragm resets the cone, completing the circuit and repeating ... the definition of an audio oscillator somewhat, but you’ve got to admit it’s simple. Can you get it even ...

A recent design by [Selenium] is super simple because it uses a single LM386 audio amplifier IC ... is simple (and dates back to 1912). An oscillator is an amplifier that gets (theoretically ...

Injection locking [1] can not only improve oscillator frequency stability and phase noise, but act as a selective frequency divider as well [2][3]. You can find sample setups of a simple ...