Common mode choke
US10931067B2 · kind B2 · utility
0Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2018 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Oct 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cable distribution plant is protected from noise where a modem housing encloses a switching power supply and digital electronics, the modem switching power supply for receiving AC mains power via an EMI filter and modem digital electronics for receiving a switching power supply output via an LC filter for filtering noise at the switching power supply frequency wherein multiple filters used with respective modems at subscriber sites protect the head-end from switching power supply harmonic noise otherwise aggregated by the nodes and passed to the head end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.