| 摘要 |
The weight sensing device of a microwave oven, which senses the weight of a cooking material provided on a tray to control a strength of a high frequency and a cooking time, is comprised of: a motor (10) provided with an axis (11) for rotating the tray (6); a bracket (20) fixedly installed to the base of a cavity (7), and in which the motor (10) is latched; a plate spring (30) that is a moving-electrode fixedly installed to the base of the bracket (20); and a PCB base material inserted between the bracket (20) and the plate spring (30) in a slide manner, and in which a fixed electrode (41) is formed, wherein the weight of the cooking material is sensed by a change of an capacitance between the plate spring (30) of the moving-electrode and the fixed electrode (41) of the PCB base material (40).
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