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FEEDBACK_OSCILLATOR

2016-08-17 14:12  
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FEEDBACK_OSCILLATOR
C1 provides positive feedback between amplifier V2 and cathode follower V1, causing oscillation at frequency and amplitude at which loop gain is unity. Twin-T network in negative feed-back loop maintains pure sine wave, free of harmonics. Variable-gain negative-feedback amplifier V3-V4 stabilizes frequency and amplitude at prescribed values.-Oscillator Patent is Granted, Electronics, 31;37, p 108.