Method and apparatus for controlling oscillator duty cycle

Details Method and apparatus for controlling oscillator duty cycle Method and apparatus for controlling oscillator duty cycle

1993-10-15

1996-01-02

Pascal, Robert J.

Oscillators

Combined with particular output coupling network

331116R, 331116FE, 331158, 331175, 329175, 329291, H03B 536

Patent

active

054812283

ABSTRACT:
A controller circuit adjusts the output signal duty cycle of an oscillator circuit. The controller circuit changes the effective bias voltage of an amplifier in a Pierce oscillator by enabling a sequence of transistor stages. Changes to the amplifier bias voltage proportionally alter the duty cycle of the oscillator output signal. Each transistor stage includes a first and second transistor selectively coupled in parallel with the amplifier. Each transistor in the circuit has smaller process parameters than the amplifier transistors so that the amplifier bias voltage can be incrementally increased or decreased to produce an output signal with a high precision duty cycle.

REFERENCES:
patent: 3979693 (1976-09-01), Saari
patent: 4065728 (1977-12-01), Saari
patent: 4095165 (1978-06-01), Boros
patent: 4152675 (1979-05-01), Jett, Jr.
patent: 4292604 (1981-09-01), Embree et al.
patent: 4383224 (1983-05-01), Saari
patent: 4491691 (1985-01-01), Embree et al.
patent: 4567333 (1986-01-01), Embree et al.
patent: 4802080 (1989-01-01), Bossi et al.
patent: 4831343 (1989-05-01), Baron
patent: 4853655 (1989-08-01), Embree et al.
patent: 4887053 (1989-12-01), Embree et al.
patent: 4903181 (1990-02-01), Seidel
patent: 4959557 (1990-09-01), Miller
patent: 5136264 (1992-08-01), Nardozza
patent: 5142251 (1992-08-01), Boomer
patent: 5339052 (1994-08-01), Melse

Affiliated with

Also associated with

Rating

Method and apparatus for controlling oscillator duty cycle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for controlling oscillator duty cycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling oscillator duty cycle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-238179