| 摘要 |
PURPOSE: A noise filter structure is provided to minimize the size of a printed circuit board by changing the position of the fuse of the noise filter adopted in a microwave oven. CONSTITUTION: A microwave oven comprises a noise filter interposed between a driving unit for generating microwaves and a power terminal for supplying power to the driving unit. The noise filter reduces noises generated from the driving unit and released to the outside. A plurality of fuses(10) are connected to a power input terminal of the noise filter. The noise filter includes power input terminals(Li,Ni) connected to the power terminal; a plurality of fuses having ends connected to the live line of the power input terminal; a noise absorbing condenser(C1) having an end connected to the other ends of the fuse and the other end connected to the neutral line of the power input terminal; a noise absorbing inductor(20) connected in parallel to the noise absorbing condenser; a resistor(R1) connected in parallel to the inductor; condensers(C2,C3) connected in parallel to the resistor; and power output terminals(Lo1,Lo2,No) connected to the driving unit.
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