Національний Технічний Університет України "Київський Політехнічний Інститут"
Национальный Технический Университет Украины «Киевский Политехнический Институт»
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Method for determination of electric power is in fact that one measures instantaneous values of current and transforms those to code. To simplify measurement of power value of voltage at positive half-periods is transformed to frequency fi, one performs transformation of current to code at discrete time intervals ti = 1/f1, and power is determined by formula where K – constant coefficient; T – period of power measurement; N1 – code value of instantaneous current.
UA4337137A1987-12-021987-12-02Method for determination of electric power and appliance for its implementation
UA14063A1
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ARRANGEMENT FOR DETERMINING VALUES OF ELECTRICAL VARIABLES WHICH CAN BE DERIVED FROM MEASURED VALUES OF AT LEAST TWO ELECTRICAL INPUT VARIABLES OF THE ARRANGEMENT.