FIELD: electrical measuring.
SUBSTANCE: method intends for measurement of active power extracted at load of ac electric circuit. Method is based onto transformation of instant power consumed by load into variable electric voltage to be proportional to the power. Pulsing voltages with different polarities are extracted from formed electric voltage. When smoothing pulsations in both voltages, the voltages are transformed into permanent heteropolar voltages being equal in value to peak values of pulsing voltages. Constant homopolar voltages are subject to summing and result of summation is measured by dc voltmeter, graduated in power units.
EFFECT: simplified procedure of measurement of active power due to reduction in number of realizing procedures; high precision of measurement.
2 dwg
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