Crystal overtone oscillator using cascade connected transistors

Details Crystal overtone oscillator using cascade connected transistors Crystal overtone oscillator using cascade connected transistors

1977-12-27

1979-02-13

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331159, 331177V, H03B 536

Patent

active

041398262

ABSTRACT:
An overtone oscillator of the feedback type is provided by a transistor, a crystal resonant at a fundamental frequency and higher odd overtone frequencies, and a feedback circuit that includes the crystal, a second transistor connected in cascade with the first transistor and an RC network. This feedback circuit provides the correct phase shift to achieve and sustain oscillations at the desired overtone frequency.

REFERENCES:
patent: 3258720 (1966-06-01), Tartas
patent: 3324415 (1967-06-01), Sheffet
patent: 3512107 (1970-05-01), Miyake et al.
patent: 3845410 (1974-10-01), Steel
patent: 3875533 (1975-04-01), Irwin et al.

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