LOOP TYPE EMF SHIELDING APPARATUS COMPRISING AUTOMATIC CONTROLLER

摘要

PURPOSE: A loop type electromagnetic wave shielding apparatus including an automatic controller, a power supply apparatus and a current collector including the same, and an electromagnetic wave shielding method using a loop are provided to form an optimal shield condition by automatically controlling capacitance of a capacitor connected to a loop. CONSTITUTION: A leakage magnetic field generator(10) generates a leakage magnetic field to be shielded. The leakage magnetic field reduces through a closed loop(110). A magnetic field sensor part(121) senses a magnetic field generated from the closed loop. An EMF(Electromagnetic Field) size sensor(122) senses the size of a transmitted magnetic field. A capacitance calculating part(123) calculates capacitance of a capacitor for appropriately reducing the magnetic field measured from transmitted size information of the magnetic field. An on/off control signal of each switch in a switch array(124) is applied to each capacitor in order to control the capacitance of a capacitor array(125).