| 摘要 |
The operating time is adjusted by a trigger pulse which is determined by the phase and period of input key signal. The controller includes a key input unit for generating a signal with the phase and the period by keys, a timer for generating trigger pulse during the time which is determined by the output signal of the key input unit, an output level controller for adjusting output level of a magnetron by output signals of the key input unit and the timer, and a relay driver for controlling the operation of a magnetron.
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