Electrical power measuring devices
申请(专利)号： EP19900313050
专利号： EP0434248A3 主分类号： G01R21/133 申请权利人： THE GENERAL
ELECTRIC
COMPANY, P.L.C.
公开国代码： EP 优先权国家： GB
摘 要：
An electrical power measuring device wherein signals (Vi,
Vv) representing one of the current and voltage supplied to a lead are applied to the input of a sigma delta
modulator (9), and the state (0 or 1) of the modulator output together with the polarity of the other one of the voltage and current values, is used to determine the sense in which the digital signals representative of successive samples of the other one of voltage and current values are accumulated in an
accumulator (11). The count in the
accumulator (11) consequently increases at a rate representative of the power supplied to the load. 主权项：
申请日： 1990-11-30 公开公告日： 1992-04-01
分类号： G01R21/133 发明设计人： GREER, NIGEL
PETER JEREMY; JONES,ALAN JOHN; JOYCE, TIMOTHY ROBERT 申请国代码： EP
优先权： 19891218 GB
8928494
摘 要 附 图：
权 利 要 求 说 明 书
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说 明 书
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Electrical power measuring devices
