Voltage monitor and alarm for power line

Details Voltage monitor and alarm for power line Voltage monitor and alarm for power line

1984-04-19

1986-09-02

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

324 96, 324131, 324435, G08B 2100, G01R 102

Patent

active

046099140

ABSTRACT:
A small self-contained voltage monitoring device, which can be connected to a power line, has a display driver in circuit with a plurality of lamps to light one lamp at a time, depending on the power line voltage. A first oscillator in circuit with the display driver is actuated to operate a sound generator and alarm if the power line voltage falls outside a preset range. A second oscillator is in circuit with the first oscillator if the power line voltage is interrupted even momentarily, both oscillators are actuated by an auxiliary power source to generate a different sounding alarm. The alarm will continue to sound even if the power line voltage is restored until the auxiliary power source is manually deactivated.

REFERENCES:
patent: 3693110 (1972-09-01), Briggs, Jr. et al.
patent: 4075624 (1978-02-01), Sheff
patent: 4096473 (1978-06-01), Sweany et al.
patent: 4122437 (1978-10-01), Petersen
patent: 4251769 (1981-02-01), Ewert et al.
"Dot/Bar-Graph Display Drivers" by M. X. Maida; Radio-Electronics, vol. 51, No. 10, Oct. 1980, pp. 96-97.

Affiliated with

Also associated with

Rating

Voltage monitor and alarm for power line 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 monitor and alarm for power line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage monitor and alarm for power line will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1099982