| 发明名称 | Arc fault circuit interrupter | ||
| 摘要 | An arc fault detection circuit for an arc fault circuit interrupter (AFCI). The arc fault detection circuit includes an arc detecting circuit for detecting an arc fault in one or more power supply lines and outputting a detected signal, an arc filtering circuit electrically coupled to an output terminal of the arc detecting circuit for removing signal parts unrelated to the arc fault from the detected signal and outputting a filtered half-cycle signal, and an arc processing circuit electrically coupled to an output terminal of the arc filtering circuit for generating, based on the filtered half-cycle signal received, a processed half-cycle signal characterizing the arc fault. The arc fault detection circuit also includes simulated arc testing circuit that has a user-touchable test switch, and an arc oscillator to generate a simulated arc fault signal for testing the arc fault detection circuit or its respective components. | ||
| 申请公布号 | US9640968(B2) | 申请公布日期 | 2017.05.02 |
| 申请号 | US201414306686 | 申请日期 | 2014.06.17 |
| 申请人 | Li Chengli | 发明人 | Li Chengli;Yue Guolan |
| 分类号 | H02H1/00;H02H3/04 | 主分类号 | H02H1/00 |
| 代理机构 | Chen Yoshimura LLP | 代理人 | Chen Yoshimura LLP |
| 主权项 | 1. An arc fault detection circuit for an arc fault circuit interrupter (AFCI), comprising: an arc detecting circuit for detecting an arc fault in one or more power supply lines and outputting a detected signal; an arc filtering circuit electrically coupled to an output terminal of the arc detecting circuit for removing signal parts unrelated to the arc fault from the detected signal and outputting a filtered half-cycle signal, the arc filtering circuit comprising: a voltage regulating module electrically coupled to the arc detecting circuit for outputting a multi-amplitude half-cycle periodic voltage signal that corresponds to the detected signal; anda phase-shifting module electrically coupled to an output terminal of the voltage regulating module for deriving the filtered half-cycle signal from the multi-amplitude half-cycle periodic voltage signal; and an arc processing circuit electrically coupled to an output terminal of the arc filtering circuit for generating, based on the filtered half-cycle signal received, a processed half-cycle signal characterizing the arc fault. | ||
| 地址 | Suzhou CN | ||