Voltage sensing circuit

Details Voltage sensing circuit Voltage sensing circuit

2005-04-19

2005-04-19

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S143000, C327S539000

Reexamination Certificate

active

06882199

ABSTRACT:
A voltage sensing circuit includes a bandgap generator that generates a bandgap voltage, and a monitoring unit that determines whether the bandgap generator is adequately powered. The bandgap voltage is used as a reference voltage for comparison with a voltage to be sensed; alternatively, a separate reference voltage is derived from the bandgap voltage. In the latter case, the circuit that derives the reference voltage amplifies the bandgap voltage, using a differential amplifier biased according to a bias voltage derived from the bandgap generator, and has a compensation circuit for compensating for amplifier offset due to variations in the bias voltage. In either case, if the monitoring unit decides that the bandgap generator is inadequately powered, it forces the sensing result signal to a fixed state, avoiding the output of erratic sensing results.

REFERENCES:
patent: 6486727 (2002-11-01), Kwong
patent: 6801058 (2004-10-01), Jiandong
patent: 11-311643 (1999-11-01), None

Affiliated with

Also associated with

Rating

Voltage sensing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3401290