Electronic devices

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

307529, 328160, 364483, 364605, 364841, 324142, G06J 100, G06G 716

Patent

active

045009732

ABSTRACT:
An electronic watthour meter for connection in a two-wire power distribution circuit comprises a shunt connected in one of the wires and an electronic circuit comprising a transconductance multiplier, a V to F converter and a reversible counter. The DC power supply of the electronic circuit is referred to the wire containing the shunt, which wire is always live, so that the electronic circuit "floats" electrically on this live wire. The first input of the multiplier can therefore be directly connected across the shunt, and the second input is connected via a high value resistance to the other wire so as to receive an input current representative of the voltage between the wires. To eliminate the effects of drift in the multiplier, the polarity of the input current to the multiplier and the direction of counting of the counter are periodically and simultaneously reversed by a square wave signal of 1:1 mark space ratio. The electronic circuit is implemented using LSI techniques.

REFERENCES:
patent: 3002690 (1961-10-01), Meyer
patent: 3432650 (1969-03-01), Thompson
patent: 3440441 (1969-04-01), Ley
patent: 3648182 (1972-03-01), Carnel
patent: 3764908 (1973-10-01), Elms
patent: 3780273 (1973-12-01), Turrell
patent: 3867620 (1975-02-01), Coor
patent: 3955138 (1976-05-01), Milkovic
patent: 4056774 (1977-11-01), Shum
patent: 4079313 (1978-03-01), Callan
patent: 4138649 (1979-02-01), Schaffer

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electronic devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-617394

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.