| 摘要 |
An electrical energy meter comprises a voltage sensor, a current sensor, electrical energy operating means, a display and a source. Therein said electrical energy operating means includes a voltage pulse modulator, a current pulse modulator, which perform full-wave modulation to the analog signals output from the voltage sensor and current sensor, a multiplier and an integrator. A number of said multipliers can commonly use an output signal of a voltage pulse modulator, and a number of current pulse modulators can use a triangular wave generator.
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