I made this audio oscillator on a breadboard



Published
In this video, I demonstrate how to make an audio oscillator on a breadboard. This is a RC phase shift oscillator which uses positive feedback to generate a sine wave. The oscillator is very simple, and uses only a single NPN-transistor (BC547), since the oscillator is based on a common emitter amplifier. I also demonstrate that the DC-blocking output capacitance effects the resonant frequency.

How to make an audio oscillator
How the RC phase-shift oscillator works
Single-transistor audio oscillator
Audio oscillator
Sine wave oscillator
Phase shift oscillator
RC phase shift oscillator
8 Ohm speaker
Make some noise with an 8 Ohm speaker
Make sounds from a small speaker
Circuit diagram of a simple audio oscillator

Useful references:
Single-Transistor Audio Amplifier - How the Common Emitter Amplifier Works: https://youtu.be/QGInwQa_XEM
More material on RC phase shift oscillators: https://youtu.be/PN8iwDNj658
Category
Audio
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