Quartz crystal tuning fork vibrator for a crystal oscillator

Details Quartz crystal tuning fork vibrator for a crystal oscillator Quartz crystal tuning fork vibrator for a crystal oscillator

1978-07-06

1979-12-11

Grimm, Siegfried H.

Oscillators

Electromechanical resonator

Vibrating reed or string type

310361, 310365, 310366, 310370, 331163, H03B 536, H03H 918, H03H 920

Patent

active

041785665

ABSTRACT:
An oscillator circuit including a flexural quartz crystal vibrator of the tuning fork type having an electromechanical coupling factor within the range of 2.5% to 3.5%. The vibrator is comprised of a quartz crystal element including a base portion and a pair of vibratable legs extending therefrom, and a pair of electrodes disposed on the quartz element for receiving alternating electrical signals of opposite polarity for effecting flexural vibration of the legs in response to the electrical signals. The quartz element is defined by a cutting angle within the range of zytw (0.degree.-10.degree.)/(10.degree.-30.degree.).

REFERENCES:
patent: 3617923 (1971-11-01), Paradysz et al.
patent: 3714867 (1973-02-01), Dargent
patent: 3969641 (1976-07-01), Oguchi et al.
patent: 3979698 (1976-09-01), Gollinger

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