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1.发明授权Safety circuit for rapidly switching off oscillators, particularly transistor DC-DC converters, when the output voltages or output current exceed or full below the required values 失效当输出电压或输出电流超过或低于所需值时，用于快速关断振荡器，特别是晶体管DC-DC转换器的安全电路
公开(公告)号：US3863125A
公开(公告)日：1975-01-28
申请号：US34513573
申请日：1973-03-26
Applicant: PHILIPS CORP
Inventor： TOLLRIAN HERWIG , KRAHL BURGHARD
CPC classification number: H02H7/1213 , H02M3/3388
Abstract: In a dc-dc converter using a transformer coupled oscillator a threshold switch connected to the dc output of the converter provides a control signal when the voltage and current output parameters exceed predetermined ranges. A thyristor and a resistor connected in series with the main current path of the thyristor are connected across the dc input to the converter and normally provide a high impedance path for an additional coil magnetically coupled to the transformer. The control signal from the threshold switch turns on the thyristor, providing a low impedance path for the coil and thereby interferring with the operation of the oscillator.
Abstract translation: 在使用变压器耦合振荡器的dc-dc转换器中，连接到转换器的直流输出的阈值开关在电压和电流输出参数超过预定范围时提供控制信号。 与晶闸管的主电流路径串联连接的晶闸管和电阻器跨越直流输入端连接到转换器，并且通常为与变压器磁耦合的附加线圈提供高阻抗路径。 来自阈值开关的控制信号打开晶闸管，为线圈提供低阻抗路径，从而干扰振荡器的工作。
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