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A proposed a.c. digital watt/joule meter is described, which combines the principle of the well known dual-slope analogue-digital convertor with that of the sampling digital wattmeter to provide a system where multiplication, digitising, averaging and integration may be performed by using relatively few components.
Inspec keywords: power measurement; analogue-digital conversion; wattmeters; digital instrumentation
Other keywords:
Subjects: Power and energy measurement; Display, recording and indicating instruments; Power system measurement and metering