Simple sine-wave RC-oscillator

325

05:31:06

If we have an inverting amplifier and three identical serial RC circuts there exist a frequency such that a pure-sine signal phase shift for one RC is π/3 and hence for all three it is π. Under this conditions the whole circuit at this frequency have a positive feedback and becomes an oscillator. Push the button to start simulation..

published 3 years ago

noheaddog

3 years ago

Very helpful, thanks!

cjx5813

3 years ago

Thanks. The Rfb needed is about 29K for Ab >= 1, but why it doesn't work?

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