Electromagnetic interference (EMI) filter unit and associated methods
US11839028B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2021 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Sep 1, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10189
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A filter unit is provided to retrofit within signal lines that couple analog cockpit gauges to transducers in rotorcraft systems. The filter unit may include a housing assembly and an electromagnetic interference (EMI) filter assembly housed therein. The filter assembly may include a printed circuit board (PCB) having conductive PCB traces and a signal line input connector configured to connect to multiple transducer signal lines. The filter assembly may also include a signal line output connector configured to connect to multiple analog cockpit gauge signal lines and a plurality of common mode chokes electrically connected between the signal line input connector and the signal line output connector. Each common mode choke may be positioned on the PCB so that it does not electrically/magnetically interfere with the other common mode chokes of the plurality of common mode chokes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.