Funky Weird Oscillator Thingy

Hahah what a headline. Anyway i found myself playing around with 2 stages of common emitter amplifiers and a few feedbacks here and there and voila. The most unorthodox oscillator I've ever seen. It somewhat has the topology of a multivibrator but with a controlled negative feedback to keep the output in line (so to speak). Always remember the few basic rules of any oscillator: 1. - a positive feedback stronger than the negative. 2 - a 360 degrees inversion of the output and feeding it back to the input. That's the positive feedback achieved here by the 2x180degree shift from the amps. 3- a form of a negative feedback is also needed to stabilise the amplitude and keep it from reaching cut off distortion. 4 and last but not least in importance you need a shaper for the sinewave. Typically an RC or an LC filter.

published 11 years ago