Comparator with hysteresis

Details Comparator with hysteresis Comparator with hysteresis

2007-03-06

2007-03-06

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S205000

Reexamination Certificate

active

11057244

ABSTRACT:
In one embodiment, a comparator is provided with a first differential input stage that receives an input voltage and a reference voltage and produces a first differential output, and a second differential input stage that has differential inputs and produces a second differential output. A comparator stage produces a comparator output in response to the first and second differential outputs. The comparator also has a hysteresis control circuit, the components of which include 1) a resistor and a hysteresis regulating voltage input, coupled between the differential inputs of the second differential input stage, 2) first and second current generators, and 3) at least one switch, under control of the comparator output, to alternately enable different combinations of the first and second current generators, thereby inducing a first or a second current through the resistor.

REFERENCES:
patent: 3612912 (1971-10-01), Schwartz
patent: 4408132 (1983-10-01), Kuwahara
patent: 5362994 (1994-11-01), Lin
patent: 5528185 (1996-06-01), Lewicki et al.
patent: 6229350 (2001-05-01), Ricon-Mora
patent: 6407605 (2002-06-01), McCann
patent: 6538476 (2003-03-01), Forbes

Affiliated with

Also associated with

Rating

Comparator with hysteresis does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3786161