Network filtering circuit for protection lightning surge
US9979370B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2016 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Jun 5, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/427
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The network filtering circuit includes a cable side for connection with a network cable, a physical side for connection with a mother board, and a plurality of transmission channels connected between the cable side and the physical side. Each of the transmission channels includes an isolation transformer with a primary coil connected with the cable side and a secondary coil coupling with the primary coil. A common mode choke has two first ends connected to the physical side and two opposite second ends. A pair of capacitors series connection with the corresponding second ends and are connected between the secondary coil and the common mode choke. The primary coil has a first center tap directly connected to a ground node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.