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STABLE_OSCILLATOR

2016-08-10 08:28  
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STABLE_OSCILLATOR
Excellent frequency and amplitude stability is accomplished by eliminating all grid current in tank circuit and by isolating tank from driving tube by means of resistive degeneration. If very pure sine wove is required, grid of V1 should be coupled to high-impedance load that is equivalent constant resistance, because either reacyive or variable loads will impair stability.-J. C. Davis, Stable Oscillator Circuit, EEE, 11:2, p 26.