Microwave oven timer

作者： Joseph John Mahon

DOI:

关键词: Rotation 、 Microwave oven 、 Dial 、 Mode (computer interface) 、 Engineering 、 Duty cycle 、 Control engineering 、 Electrical engineering 、 Timer 、 Mechanism (engineering) 、 Power (physics)

摘要: A programmer timer for an appliance, such as microwave cooking oven, having a magnetron power switch positioned by control selectively moved to one of three level settings by user rotation the single rotary knob selected position on separate program interval range scales dial. Selection knob first scale provides a l00% duty cycle, or full "ON", cooking mode for desired interval, selection position second predetermined fractional cycle "MEDIUM" operation interval; and, third scale predetermined cycle "LOW" "DEFROST" level operation interval. single timing motor drives cam advance mechanism effecting time-out the levels operation.