Measuring apparatus with adjustable indicator for measuring the

Details Measuring apparatus with adjustable indicator for measuring the Measuring apparatus with adjustable indicator for measuring the

1992-11-24

1995-11-28

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Demand, excess, maximum or minimum

324102, 324 94, G01R 1900, G01R 2700

Patent

active

054711347

ABSTRACT:
The invention relates to measuring apparatus for measuring the real load factor on an electricity source delivering an AC current to a consumer appliance, said apparatus comprising:
a current sensor supplying a signal that is continuously proportional to the current delivered by the source;
a rectifier circuit receiving said signal and supplying a rectified signal;
a peak detector circuit receiving the rectified signal and extracting therefrom the peak value, which peak value can be read on an indicator; and
calibration means enabling the measuring apparatus to be set so that the peak value indicator displays 100% when the measured peak value of the AC current reaches the specified maximum level.

REFERENCES:
patent: 4333049 (1982-06-01), Yui et al.
patent: 4639618 (1987-01-01), Oleson
patent: 4884019 (1989-11-01), McKee, Jr.
patent: 5237493 (1993-08-01), Durig et al.
Radio Fernsehen Elektronik, vol. 35, No. 11, 1986, Berlin, Germany, p. 735; W. Michel: "Digitaler Spitzenwertmesser".

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