Patent ID: 7099785

Claim:
An electric plug comprising a housing and an electrode circuit, wherein said housing houses a detection circuit, an electric energy measuring and converting circuit, a DC power supply circuit, a microprocessor, and a liquid crystal display and drive circuit; said detection circuit detects electric current and voltage, and removes high frequency noises from power supply; said electric energy measuring and converting circuit receives detected signal from said detection circuit and outputs a corresponding electric energy signal to said microprocessor; said DC power supply circuit provides the necessary working voltage to said electric energy measuring and converting circuit and said microprocessor; said microprocessor proceeds with electric energy signal processing, time counting, and data storing processes according to the signal received; said LCD circuit displays electric energy and time data; said electrode circuit has an input end electrically connected to power supply and an output end electrically connected to an input end of said detection circuit; said detection circuit outputs an output signal through an output end thereof to an input end of said microprocessor; said microprocessor outputs processed time signal to said electric energy measuring and converting circuit and has an output end electrically connected to said LCD circuit; said DC power supply circuit has an input end electrically connected to said electrode circuit, a first output end electrically connected to said electric energy measuring and converting circuit, and a second output end electrically connected to said microprocessor.