Patent ID: 6982857
Filing Date: 2006-01-03
Classification: H05K

Abstract:
1. An apparatus for shielding an electromagnetic wave comprising: a relay having a contact selectively connected to a first terminal or a second terminal of a power receptacle; a controller controlling the connection between the contact of the relay and the first terminal or the connection between the contact of the relay and the second terminal, comparing the first voltage value generated by the connection between the contact of the relay and the first terminal with the second voltage generated by the connection between the contact of the relay and the second terminal, and controlling the relay so that the contact of the relay is connected to the terminal having the lower voltage value; an electromagnetic wave shielding unit for providing the electromagnetic wave generated by an electric and electronic device to the terminal having the lower voltage value; and a voltage adjusting unit for transforming the voltage supplied from the relay to the voltage level adapted for the controller.