We expect oscillation at the resonant frequency at which the positive feedback is at 0 degrees (in phase) with the input. For oscillation to occur, the gain has to be at least 1 at that frequency. Kaz Oct 30 `12 at 20:39 I still think the 10u cap has wrong polarization. The cathode of the cap can be 700mV at best, that means to polarize the cap correctly,
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the current in th 22R resistor at average should be 30mA. Didn`t (virtually) build the circuit though to verify, but my feeling says it is wrong. jippie Oct 30 `12 at 21:23
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