发明名称 |
Efficient computer input system for sensing status of high voltage contacts |
摘要 |
An apparatus is provided for sensing the state of high voltage contact inputs in a process control system. Lower voltage contact closure input modules cooperate with a reference bus and reference bus regulator to reduce the voltage drop across an input module when a pair of contacts is closed, thereby reducing the energy dissipated and heat created by the input module.
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申请公布号 |
US4470041(A) |
申请公布日期 |
1984.09.04 |
申请号 |
US19810318223 |
申请日期 |
1981.11.04 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
SUTHERLAND, JAMES F.;COOK, HENRY F. |
分类号 |
G01R31/02;G01R31/04;G01R31/327;(IPC1-7):G08B21/00 |
主分类号 |
G01R31/02 |
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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