This circuit is a phase-shift oscillator. A set of three capacitors and two resistors forms a filter that shifts its input by 180 degrees at the oscillation frequency. This filter's output feeds into an inverting amplifier, and this amplifier's output is fed back into the filter, providing positive feedback at the oscillation frequency.
This page is a utility for simulating генератор с фазовым сдвигом online with specified initial values.










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