Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural inputs
Patent
1986-12-22
1988-08-02
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural inputs
324116, G01R 21133, G01R 1508
Patent
active
047616067
ABSTRACT:
An auto-ranging circuit for an electronic watthour meter employs high- and low-range sources for increasing the dynamic range over which satisfactory measurement accuracy can be maintained. A counter, having a capacity equal to the ratio of high-range to low-range is interposed in the output during use of the low-range source so that output pulses have the same energy-consumption significance at all time. At transition from low-range to high-range, any residue in the counter, representing energy consumed but not yet recognized by the generation of an output pulse, is preset into an integrator of the electronic watthour meter for reducing correspondingly the amount of energy consumption required to produce an output pulse in the first measurement cycle following the low- to high-range transition.
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Germer Warren R.
Ouellette Maurice J.
Brunson Robert E.
Burns William
Eisenzopf Reinhard J.
General Electric Company
Morrison Thomas R.
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