Transformerless power monitor circuit having means for electroni

Details Transformerless power monitor circuit having means for electroni Transformerless power monitor circuit having means for electroni

1990-12-13

1992-01-07

Stephan, Steven L.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

364483, 340650, 340661, G06F 900, G08B 2100, H02M 700

Patent

active

050796887

ABSTRACT:
In a power monitor circuit, AC power-line voltage is converted by a DC power supply to a regulated DC voltage. The DC power supply shuts down itself in the event of a failure therein. The output of DC supply rises from zero to a specified value in slow response to power-on state and drops to zero in slow response to a significant drop in the AC voltage. A rectifier-filter converts the AC voltage to a nonregulated DC voltage. The output of the rectifier-filter rises in quick response to the power-on state and drops in quick response to the significant AC voltage drop. If the output of DC power supply drops below a specified theshold due to AC power-line failure or due to its own failure, a DC low-voltage signal is generated. If the output of rectifier-filter rises above a specified low level a first AC transitory signal is generated and if it drops below a specified high level a second AC transitory signal is generated. A latch circuit is energized with the nonregulated DC voltage to latch the DC low-voltage signal if it occurs during the interval between the first and second AC transitory signals and supplies a DC alarm signal to computer circuitry. A power controller is energized with the regulated DC voltage to supply control signals to the computer circuitry in response to the first and second AC transistory signals.

REFERENCES:
patent: 4991105 (1991-02-01), Pimental
patent: 5019996 (1991-05-01), Lee

Affiliated with

Also associated with

Rating

Transformerless power monitor circuit having means for electroni does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transformerless power monitor circuit having means for electroni, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transformerless power monitor circuit having means for electroni will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-826535