| 摘要 |
PURPOSE: A microwave oven is provided to reduce a manufacturing cost of the microwave oven by simplifying a structure of an interworking relay. CONSTITUTION: A magnetron thermo-stator(101) and the first safety switch(103) are connected to one end portion of a common power input portion(AC). A start relay switch(105) is connected to the other end portion of the common power input portion(AC). The second safety switch(107) is connected to a contact terminal of the start relay switch(105). An output control relay switch is connected to the contact of the second safety switch(105) in order to control the intensity of high voltage. A high voltage transformer(111) is connected between a contact terminal of the first safety switch(103) and a contact terminal of the output control relay switch. A tray motor(113) and a monitor switch(115) are connected to rear end portions of the first and the second safety switches(103,105). A fan motor(117) is connected in parallel to the tray motor(113) and the monitor switch(115). The first side of a low voltage transformer(119) is connected to a rear end portion of the magnetron thermo-stator(101). The second side of the low voltage transformer(119) is connected to a power terminal of a control circuit board(121). A relay switch(301) is connected to an output terminal of the high voltage transformer(111). A relay driving portion(303) is connected between the common power input portion(AC) and the first side coil of the high voltage transformer(111).
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