| 发明名称 | Intrinsically safe energy limiting circuit | ||
| 摘要 | An intrinsically safe energy limiting circuit for connection between an upstream DC power source and a downstream electrical load powered from the upstream DC power source, wherein the circuit comprises from upstream to downstream an input to be connected to the DC power source, an electronic current limiter configured to limit a current through the circuit to a maximum value if the current reaches this value, a fuse designed to open at a current value greater than the maximum value, a DC-to-DC converter configured to convert a DC input voltage to a lower nominal DC output voltage, a zener barrier having a zener voltage higher than the DC output voltage, and an output for connection to the electrical load. | ||
| 申请公布号 | US8848332(B2) | 申请公布日期 | 2014.09.30 |
| 申请号 | US201213715108 | 申请日期 | 2012.12.14 |
| 申请人 | Siemens Aktiengesellschaft | 发明人 | Schmidt Glen Eugene |
| 分类号 | H02H1/04;H02H9/00;H02H9/02 | 主分类号 | H02H1/04 |
| 代理机构 | Cozen O'Connor | 代理人 | Cozen O'Connor |
| 主权项 | 1. An intrinsically safe energy limiting circuit for connection between an upstream DC power source and a downstream electrical load powered from the upstream DC power source, said energy limiting circuit from upstream to downstream comprising: an input for connection to the upstream DC power source; an electronic current limiter configured to limit a current through the energy limiting circuit to a maximum value if the current reaches the maximum value; a fuse designed to open at a current value greater than said maximum value; a switch-mode DC-to-DC converter configured to convert a DC input voltage to a lower nominal DC output voltage; a zener barrier having a zener voltage higher than the DC output voltage; and an output for connected to the downstream electrical load. | ||
| 地址 | Munich DE | ||