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公开(公告)号:US3955125A
公开(公告)日:1976-05-04
申请号:US551817
申请日:1975-02-21
CPC分类号: H03K17/28 , B60L3/04 , H03K3/023 , H03K3/78 , B60L2200/26
摘要: A fail-safe timing circuit which includes a variable passive timing element and an active timer or timing device so as to control a device, for example, a fail-safe or B-relay such as is used in railroad signaling.
摘要翻译: 一种故障安全定时电路,包括可变无源定时元件和有源定时器或定时装置,以便控制例如铁路信令中使用的故障保护或B继电器等装置。