Wide range crystal oscillator

Details Wide range crystal oscillator Wide range crystal oscillator

2005-09-20

2005-09-20

Mis, David (Department: 2817)

Oscillators

Electromechanical resonator

Crystal

C331S158000, C331S161000, C331S182000

Reexamination Certificate

active

06946923

ABSTRACT:
A structure and associated method to allow an oscillator circuit to operate with a plurality of different crystals. The oscillator circuit comprises a semiconductor device and a crystal. The semiconductor device comprises a primary inverting amplifier and a crystal substitution damping resistor. The crystal is electrically coupled to the primary inverting amplifier. A resistance value of the crystal substitution resistor is adapted to vary in order to control an amount of current flow from the primary inverting amplifier to the crystal. The amount of the current flow to the crystal is dependent upon an electrical property of the crystal.

REFERENCES:
patent: 4574255 (1986-03-01), Fujii et al.
patent: 4641109 (1987-02-01), Hiroshi
patent: 5150081 (1992-09-01), Goldberg
patent: 5331296 (1994-07-01), Davis

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