Phase detector with low offsets

Details Phase detector with low offsets Phase detector with low offsets

1981-02-17

1982-09-14

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307529, 307246, 330288, H03K 526, G01R 2500

Patent

active

043497560

ABSTRACT:
A phase detector circuit has low offsets and is easily made as a bipolar integrated circuit. A first input to the phase detector controls a transistor which in turn controls a current source. The output of the current source is connected to a current mirror which has an NPN transistor. The current mirror is connected to ground by a transistor which is controlled by a second input signal. When the first input signal is present and is out of phase with the second input signal the output of the phase detector flows from the current source through the collector base junction of the NPN transistor. When both input signals are in phase the output of the phase detector serves as a current sink whose current carrying capabilities is controlled by the output of the current source.

REFERENCES:
patent: 2989652 (1961-06-01), Hall
patent: 3840817 (1974-10-01), Seki
patent: 3870965 (1975-03-01), Frederiksen
patent: 4001603 (1977-01-01), Wilcox
patent: 4103246 (1978-07-01), Limberg
patent: 4122402 (1978-10-01), Main

Affiliated with

Also associated with

Rating

Phase detector with low offsets does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase detector with low offsets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase detector with low offsets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2156646