Capacitor switching circuits for adjusting crystal oscillator fr

Details Capacitor switching circuits for adjusting crystal oscillator fr Capacitor switching circuits for adjusting crystal oscillator fr

1978-01-03

1979-12-18

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

307247R, 307304, 331158, 331179, H03B 536

Patent

active

041796713

ABSTRACT:
A piezo-electric oscillator composed of a quartz crystal, an inverting amplifier connected across the quartz crystal, an output capacitor connected to an output side of the quartz crystal, and a plurality of input capacitors. The input capacitors are selectively coupled to the input side of the quartz crystal by means of an electronic switching means by which an output frequency of the quartz crystal is adjusted to a prescribed value.

REFERENCES:
patent: 3457435 (1969-07-01), Burn et al.
patent: 4001606 (1977-01-01), Dingwall
patent: 4016505 (1977-04-01), Kobori

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