Quartz crystal oscillator

Details Quartz crystal oscillator Quartz crystal oscillator

1979-10-22

1981-06-16

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331158, H03B 536

Patent

active

042740665

ABSTRACT:
A Colpitts type quartz crystal oscillator comprises a resonant circuit consisting of two capacitors connected in series across a quartz crystal, the latter serving as an inductive element. The resonant circuit is connected between the base and collector of a transistor, with the junction of the capacitors being connected to the emitter of the transistor to provide feedback. Means are provided to increase the gain of the transistor and thereby the driving excitation of the crystal above a normal value for a brief length of time after the oscillator is initially energized.

REFERENCES:
patent: 3134947 (1964-05-01), Charasz

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