发明名称 |
Vorrichtung zur automatischen Wiederherstellung des Normalbetriebes eines verriegelbaren Relais. |
摘要 |
<p>In order to automatically restore a normal switching position of a relay, armature from an accidental OFF switching induced by external impact or the like, the output of the relay is monitored and is applied to a differentiating circuit. A comparator is provided to reflect on and off operations of a main switch. In the event that the output of the relay falls suddenly, the differentiating circuit outputs a pulse to a wave-shaping circuit (e.g., Schmitt trigger). An gate circuit is supplied with the outputs of the wave-shaping circuit and the comparator. The output of the gate circuit momentarily allows a relay driver to actuate the relay in response to the undesired change in relay status, and hence the relay armature resumes ON switching position.</p> |
申请公布号 |
DE69022798(T2) |
申请公布日期 |
1996.05.30 |
申请号 |
DE1990622798T |
申请日期 |
1990.07.31 |
申请人 |
NEC CORP., TOKIO/TOKYO, JP |
发明人 |
MATSUO, RYUJI, C/O NEC CORPORATION, TOKYO, JP |
分类号 |
G05F1/10;H01H47/00;(IPC1-7):H01H47/00 |
主分类号 |
G05F1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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