公开(公告)号：US4042871A

公开(公告)日：1977-08-16

申请号：US631813

申请日：1975-11-14

申请人： Calvin E. Grubbs ,  Jack B. Harwell

发明人： Calvin E. Grubbs ,  Jack B. Harwell

IPC分类号： H02H7/122 ,  H02M3/315 ,  H02M5/45 ,  H02H7/127

CPC分类号： H02M3/3155 ,  H02H7/122 ,  H02M5/4505

摘要： Circuitry for providing high voltage DC power from commercially available 60 hertz AC utility power. The incoming 60 hertz AC voltage is rectified to a DC voltage. This DC voltage is then converted to a high frequency AC voltage by means of a sine wave inverter. This high frequency sine wave voltage is then converted to a different voltage and rectified by a voltage doubler. The inversion and rectification are under the control of logic circuitry which includes means for sensing line faults to provide circuit protection.

摘要翻译： 电路从市售的60赫兹交流电力公司提供高压直流电源。 输入的60赫兹交流电压被整流为直流电压。 然后通过正弦波逆变器将该直流电压转换成高频交流电压。 然后将该高频正弦波电压转换成不同的电压，并通过倍压器进行整流。 反相和整流处于逻辑电路的控制之下，其包括用于感测线路故障以提供电路保护的装置。

公开(公告)号：US4447849A

公开(公告)日：1984-05-08

申请号：US394437

申请日：1982-07-01

申请人： Jack B. Harwell

发明人： Jack B. Harwell

IPC分类号： H03K17/725 ,  H03K17/72

CPC分类号： H03K17/725

摘要： A control circuit is disclosed for limiting the polarity and duration of current flowing through an electromagnetic device which is coupled to an alternating current potential source. The control circuit is coupled in series with the electromagnetic device and a switch. The control circuit includes a gate controlled conduction device and circuitry which is utilized to selectively gate that device only during one positive half cycle following the closing of the switch. A second gate controlled conduction device is utilized to discharge a capacitor in timed relationship with the alternating current potential source and prevent recharging of that capacitor until the switch is opened and then closed again.

摘要翻译： 公开了一种用于限制流过耦合到交流电源的电磁装置的电流的极性和持续时间的控制电路。 控制电路与电磁装置和开关串联。 控制电路包括栅极控制的导通装置和电路，其用于仅在开关闭合之后的一个正半周期期间选择性地栅极该器件。 利用第二栅极控制传导装置对与交流电流源定时关系的电容器进行放电，并防止该电容器的再充电，直至开关断开，然后再次闭合。