Temperature compensated crystal oscillator

Details Temperature compensated crystal oscillator Temperature compensated crystal oscillator

1977-05-02

1978-06-20

Kominski, John

Oscillators

Solid state active element oscillator

Transistors

331176, 331177V, H03B 536

Patent

active

040964523

ABSTRACT:
A temperature-compensated crystal oscillator for correcting frequency variations caused by temperature changes by means of a differential amplifier which detects an unbalanced voltage in a bridge circuit including a temperature sensitive element for controlling a capacitance of a variable capacitor. The oscillator includes a circuit element having a temperature characteristic responsive to a temperature characteristic of the variable capacitor. The aforesaid circuit element is positioned in a current sink path of the differential amplifier.

REFERENCES:
patent: 3404297 (1968-10-01), Fewings et al.
patent: 3454903 (1969-07-01), Page
patent: 3970966 (1976-07-01), Keller
patent: 4051446 (1977-09-01), Owaki

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