Watt hour meter

Details Watt hour meter Watt hour meter

1976-01-27

1977-03-01

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Fluid

G01R 2722

Patent

active

040104176

ABSTRACT:
This disclosure pertains to an inexpensive watt hour meter apparatus comprising a line cord supplying household energy to an inexpensive energy consuming measuring apparatus employing a coulombmeter in series with a conventional utility outlet socket. A bridge rectifier circuit converts the alternating current to direct current to operate the coulombmeter. One embodiment permits the coulombmeter, having ferrule-like ends, to be reversed mechanically upon completing a measurement so that the interstitial electrolyte solution will, upon a new measurement, move in the opposite direction. Two scales are provided reading in opposite directions to facilitate simple readout of the consumed energy. A second embodiment provides a reversing switch, eliminating the need to physically interchange ends of the coulombmeter. The reversing switch is adapted with a mask which obliterates one scale and leaves exposed the other scale thereby eliminating confusion as to the direction of the moving interstitial electrolyte solution when the coulombmeter is in operation.

REFERENCES:
patent: 3255413 (1966-06-01), Marwell et al.
patent: 3290669 (1966-12-01), Mews
patent: 3405274 (1968-10-01), Lakin

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