| 摘要 |
An electric plug is disclosed which includes a detection circuit, which detects electric current and voltage and removes high frequency noises from power supply; an electric energy measuring and converting circuit, which receives detected signal from the detection circuit and outputs a corresponding electric energy signal; a microprocessor, which proceeds with electric energy signal processing, time counting and data storing processes according to the electric energy signal received from the electric energy measuring and converting circuit; a DC power supply circuit, which provides the necessary working voltage to the electric energy measuring and converting circuit and the microprocessor; and an LCD circuit, which displays electric energy and time data.
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