Apparatus for Adaptively Reducing Electromagnetic Wave

Abstract

Disclosed is an apparatus for adaptively reducing electromagnetic waves that reduces electromagnetic waves generated from commercial power by changing a grounding point of the commercial power supplied to a home. The apparatus for reducing electromagnetic waves includes an electromagnetic wave generator, an electromagnetic wave detector, an impedance varying unit, and a controller. The electromagnetic wave generator is connected to a secondary coil terminal of an external transformer to generate electromagnetic waves. The electromagnetic wave detector generates detection signals corresponding to the electromagnetic waves generated from the electromagnetic wave generator, and the impedance varying unit varies the impedance for a grounding point in the electromagnetic wave generator. The controller controls the impedance varying unit such that the impedance for the grounding point in the impedance varying unit, where the electromagnetic waves are minimized is selected, in accordance with the detection signal from the electromagnetic wave generator. According to the above configuration, it is possible to reduce electromagnetic waves by varying the impedance for all loads in a home with only one apparatus for reducing electromagnetic waves and remove an unnecessary configuration substantially having no effect on varying the impedance. Accordingly, it is possible to provide an apparatus for reducing electromagnetic waves that can reduce a possibility of misoperation at a low manufacturing cost with a simple circuit.

Dependencies are inferred from the claim text.