Amplitude level control circuit

Details Amplitude level control circuit Amplitude level control circuit

2007-08-28

2007-08-28

Kinkead, Arnold (Department: 2817)

Oscillators

Amplitude control or stabilization

Automatic

C331S182000, C331S1160FE, C331S1160FE, C331S175000, C331S158000

Reexamination Certificate

active

10547903

ABSTRACT:
Amplitude level control circuit for an oscillator comprising first means arranged to generate a first current for driving the oscillator; and second means arranged to generate a second current such that in direct current conditions the second current is arranged to be a predetermined ratio of the first current, wherein the second current is arranged to be added to a reference current to form a feedback current such that in direct current conditions the first current is determined by the reference current, the ratio of the feedback current and first current and the ratio of the first current and second current, wherein the second means is further arranged to reduce the second current as oscillations of the oscillator increase, thereby reducing the first current.

REFERENCES:
patent: 3902141 (1975-08-01), Berney
patent: 4360789 (1982-11-01), Lewyn et al.
patent: 4405906 (1983-09-01), Luscher
patent: 5825255 (1998-10-01), Dijkmans
patent: 7030709 (2006-04-01), Novac
patent: 1 289 121 (2003-03-01), None

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