Alternating current watt transducer

Details Alternating current watt transducer Alternating current watt transducer

1985-11-13

1988-03-15

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

324107, G01R 2106

Patent

active

047315768

ABSTRACT:
An alternating current watt transducer including an integrated circuit analog multiplier, providing four quadrant multiplication, to the input terminals of which are applied alternating current signals proportional to the voltage and current determinative of the watts to be measured. The integrated circuit analog multiplier provides an alternating current output signal which being proportional to the product of the in-phase components of the input signals, is proportional to the watts being measured. The alternating current signal which is proportional to watts is transformed to a constant-current direct current output.

REFERENCES:
patent: 3875509 (1975-04-01), Milkovic
patent: 3900794 (1975-08-01), Bell
patent: 3955138 (1976-05-01), Milkovic
patent: 4071777 (1978-01-01), Herrmann
patent: 4182983 (1980-01-01), Heinrich et al.
patent: 4451784 (1984-05-01), Milkovic
"Measuring Average Power in Nonlinear Devices", Electronics, 5/26/77, vol. 50, #11, pp. 116-118, by Collier.

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