Temperature compensated variable frequency crystal oscillator

Details Temperature compensated variable frequency crystal oscillator Temperature compensated variable frequency crystal oscillator

1974-11-27

1976-11-30

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331176, 331177V, 332 26, 332 30V, H03B 504, H03B 536, H03C 322

Patent

active

039952339

ABSTRACT:
A temperature compensated variable oscillator formed of at least two capacitors and a resonator, or vibrator, made of lithium tantalate, in which an inductance element whose inductance value can be varied is connected in series to the vibrator; the capacitance of one of said capacitors is changed linearly in response to temperature variations, and the capacitance of the other capacitor is changed in response to temperature variations, in accordance with a second order relationship between capacitance and temperature, the graphical representation of such relationship being a second degree curve opening upward.

REFERENCES:
patent: 3373379 (1968-03-01), Black
patent: 3569865 (1971-03-01), Healey

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