Time-division analog multiplier is the measurement core of reference electrical energy meter. The measurement accuracy of time-division analog multiplier is improved by using signal conversion and phase lock technologies and symmetrical triangle wave generator. Signal conversion and phase-locked technology will be measured signal and triangle wave generator of time division multiplier correlation processing, to achieve triangle wave generator of time division power multiplier and measured signal full cycle synchronization. A symmetrical triangle wave generator with reference level accuracy is developed, which makes the measurement accuracy of time-division analog multiplier reached 20ppm and meet the measurement requirements of 50ppm reference electrical energy meter.

Research on time-division analog multiplier for 50ppm reference electrical energy meter

An improved version of the analog multiplier recently appeared is presented. This uses less number of components, hence less complex and economical, and has better accuracy.

K. S. Sanila

Papers

An Improved Time-Division Analog Multiplier