ELECTRO-MAGNETIC INTERFERENCE FILTER FOR A POWER UNIT NOT EMPLOYING POWER FACTOR CORRECTION TO PREVENT NOISE CAUSED BY MAGNETIC FLUX AND A FLAT PANEL DISPLAY DEVICE INCLUDING THE SAME

摘要

PURPOSE: An EMI(Electro-Magnetic Interference) filter for a power unit not employing PFC(Power Factor Correction) and a flat panel display device including the same are provided to achieve noise reduction effects using a single common mode choke coil for low frequencies.;CONSTITUTION: An EMI filter for a power unit not employing PFC is installed in a circuit board. One common mode choke coil for low frequencies(20), configured in EE or EER type, includes a coil wound clockwise or counterclockwise in parallel with the circuit board, a bobbin, and a core coupled with the bobbin. One common mode choke coil for high frequencies(30) is installed in the circuit board.;COPYRIGHT KIPO 2012