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1. 发明授权

US4064546A Protection circuits 失效
标题翻译：保护电路
公开(公告)号：US4064546A
公开(公告)日：1977-12-20
申请号：US696705
申请日：1976-06-16
申请人： Thadee Domanski
发明人： Thadee Domanski
IPC分类号： G01R19/165 , H02H3/02 , H02H3/027 , H02H3/13 , H02H7/09 , H02H3/24
CPC分类号： H02H3/027 , G01R19/16509 , H02H3/13
摘要： A protection circuit is provided which incorporates a reed relay whose contacts form the circuit breaker of an electrical appliance. The winding of the reed relay is supplied with a rectified alternating current derived from a current transformer coupled to the supply line to the appliance. In order to avoid periods of zero current in the winding, the winding is also supplied with a rectified alternating current from a source which is out of phase with that supplying the supply line. Failure of the current on the line will cause the contacts to open. Preferably the relay has a set of self latching contacts to prevent re-energization of the winding once de-energized. A manually operable reset switch is provided in series with the self latching contacts.
摘要翻译：提供了一种保护电路，该保护电路包括一个舌簧继电器，其接触件形成电器的断路器。簧片继电器的绕组提供了一个整流的交流电流，该交流电流源自耦合到电器的电源线的电流互感器。为了避免绕组中的零电流周期，绕组还从与提供电源线的电源异相的源提供整流的交流电。当前线路的故障将导致联系人打开。优选地，继电器具有一组自锁定触点，以防止绕组一旦断电再次通电。提供与自锁触点串联的可手动复位开关。

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