AC Electric energy meter utilizing a counter as an integrator

Details AC Electric energy meter utilizing a counter as an integrator AC Electric energy meter utilizing a counter as an integrator

1979-09-10

1981-02-10

Wise, Edward J.

Boots, shoes, and leggings

324142, G01R 2100

Patent

active

042505526

ABSTRACT:
A first input signal representative of the voltage component is integrated producing an integral signal. The integral signal is compared to fixed reference potentials. A second input signal representative of the time derivative of the current component is continuously integrated by a counter producing a signal representative of the current component. When the instantaneous magnitude of the integral signal equals a reference potential the signal representative of the current component is sampled and the integral signal is reset. Each sample value is representative of the product of the current component and the time integral of the voltage component. Successive sample values are accumulated producing totalized values representative of energy.

REFERENCES:
patent: 3758763 (1973-09-01), Nohara et al.
patent: 3764908 (1973-10-01), Elms
patent: 3794917 (1974-02-01), Martin
patent: 3838340 (1974-09-01), Legatti
patent: 3864631 (1975-02-01), Zitelli et al.
patent: 4056775 (1977-11-01), Milkovic
patent: 4077061 (1978-02-01), Johnston et al.

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