D.C. power monitor

Details D.C. power monitor D.C. power monitor

1987-08-13

1989-01-10

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

324133, 340663, G01R 19165, G01R 1930

Patent

active

047976080

ABSTRACT:
A DC power monitor includes a reference voltage and voltage dividers for obtaining voltages which are respectively above and below the reference level when the voltages being monitored are at their nominal value. Comparators compare the divided voltages with the reference and the comparator outputs are Anded and coupled through a flip flop to a bicolor LED which is one color when the voltages are in tolerance and another color when out of tolerance.

REFERENCES:
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patent: 3702469 (1972-11-01), Golja
patent: 4020414 (1977-04-01), Paredes
patent: 4282517 (1981-08-01), Wilson, Jr. et al.
patent: 4428020 (1984-01-01), Blanchard, Jr.
patent: 4496906 (1985-01-01), Clack
patent: 4559497 (1985-12-01), Farrugia
patent: 4599557 (1986-07-01), Cestaro
patent: 4638304 (1987-01-01), Kimura et al.
"Power Failure Indicator", by Dance, New Electronics, vol. 9, #15, p. 14, 7/76.

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