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热词
    • 100. 发明授权
    • Pulse transformer
    • 脉冲变压器
    • US4223195A
    • 1980-09-16
    • US931201
    • 1978-08-04
    • Jon H. Bechtel
    • Jon H. Bechtel
    • H02M7/515H03B9/10H05B6/66H05B9/06G05F3/00
    • H05B6/662H02M7/515H03B9/10
    • A pulse transformer is provided for triggering a magnetron in a microwave oven from a low level d.c. control signal. A step-up transformer has a secondary connected to a magnetron triac and a primary connected to a blocking oscillator circuit. The blocking oscillator circuit utilizes a single transistor, at the base of which there is a biasing compacitor. The system is activated by grounding of a control lead in a microprocessor controller for the microwave oven. Grounding of the control lead charges the biasing capacitor until the transistor conducts. Transistor conduction produces a feedback which discharges the capacitor. The circuit electrically isolates the high voltage, high current magnetron power system from the microprocessor controller.
    • 提供了一个脉冲变压器,用于从低电平直流电源触发微波炉中的磁控管。 控制信号。 升压变压器具有二次连接到磁控管三端双向可控硅开关和主连接到阻塞振荡器电路。 阻塞振荡器电路使用单个晶体管,其基极具有偏置电容器。 通过微波炉微处理器控制器中的控制引线的接地来激活系统。 控制引线的接地对偏置电容充电,直到晶体管导通。 晶体管导通产生放电电容的反馈。 该电路将高电压,高电流磁控管电力系统与微处理器控制器电隔离。