Discussion
Why does an LC oscillator's frequency drift with temperature?
Answer: C
Both reactive components have temperature coefficients, and since the frequency depends on the square root of their product, the drift is half the sum of their fractional changes. Gain and feedback fraction affect amplitude rather than frequency, and the supply is regulated. That the drift is halved by the square root, and that components with opposite coefficients can be chosen to cancel, are the two facts a stable LC design rests on.
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