Low cost volt/ampere meter with liquid crystal display

Details Low cost volt/ampere meter with liquid crystal display Low cost volt/ampere meter with liquid crystal display

1981-07-24

1984-03-20

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

324 96, 324115, 324122, G01R 122, G01R 1508

Patent

active

044383967

ABSTRACT:
A low cost volt/ampere meter for consumer use employs a single liquid crystal bargraph display and a simple voltage divider network to display both line voltages and appliance currents encountered in a residential environment. The instrument employs standard line voltage prongs on one end and a socket for accepting standard line voltage prongs on the other end. A range switch connects the instrument to read either voltage across the meter prongs or current through the prongs. When the prongs are inserted into a duplex receptacle and an appliance is plugged into the meter socket, current drawn by the appliance will be displayed on the bargraph when the range switch is selected to read amperes.

REFERENCES:
patent: 2146555 (1939-02-01), Arey
patent: 2905899 (1959-09-01), Miller et al.
patent: 4060801 (1977-11-01), Stein et al.
patent: 4212011 (1980-07-01), Waldron
patent: 4301407 (1981-11-01), Koslar

Affiliated with

Also associated with

Rating

Low cost volt/ampere meter with liquid crystal display does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low cost volt/ampere meter with liquid crystal display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low cost volt/ampere meter with liquid crystal display will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1606834