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April 16, 2014

watt_hour_meter_circuits

Simple digital AC wattmeter:  04/14/97 Electronic Design - Ideas for Design / To make useful measurements of “real” power consumption, wattmeters must be accurate despite large reactive and dc components in the current drawn by the monitored load. Moreover, power consumption from multiple ac phases (tw1o in the case of a typical. . .
Wattmeter Employs Switching-Regulator IC:  11/03/97 Electronic Design - Ideas for Design / An inexpensive switching regulator can provide all the active circuitry needed to implement a dc wattmeter and allow the power dissipated in a resistive load, RX, to be displayed on an analog panel meter. The wattmeter’s operation. . .