Filtering electromagnetic interference from low frequency transmission lines at a device enclosure
US7182644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Apr 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10189
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical device having an enclosure in which noise is parasitically induced in a wire located in the interior of the enclosure is disclosed. The electrical device has an entry connector for mating the wire with an external connector at which a transmission line terminates for preventing the induced noise from being emitted from the device enclosure via the transmission line. The electrical device comprises a printed circuit board (PCB) adapted to be mounted adjacent to an opening in a wall of the enclosure, a receptacle, integral with the PCB, configured to mate with the external connector, a first conductive path coupling the transmission line with the wire when mated, and capacitors mounted on the printed circuit board radially disposed around the receptacle and adapted to be electrically coupled to the external connector when mated. The electrical device further comprises a second conductive path coupling the capacitors to a low potential sink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.