发明名称 |
Dual current-source digital-input circuit for an industrial automation system |
摘要 |
An interface circuit for use between an input circuit and an industrial automation system is disclosed. The industrial automation system includes an opto-coupler capable of being operably connected to the interface circuit. The interface circuit includes a first and second terminal, each terminal capable of being operably connected to the opto-coupler. A first current-source is operably connected to the first terminal and a second current-source is operably connected to the second terminal. A reference voltage is operably connected to the first current-source and the second current-source wherein the first and second current-source cooperate to provide a total input current in accordance with the operating characteristics of the industrial automation circuit.
|
申请公布号 |
US7019318(B2) |
申请公布日期 |
2006.03.28 |
申请号 |
US20030746487 |
申请日期 |
2003.12.29 |
申请人 |
SCHNEIDER AUTOMATION, SAS |
发明人 |
BREINLINGER RICHARD H. |
分类号 |
G02B27/00;H01J40/14;H03K17/795;H04B10/00 |
主分类号 |
G02B27/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|