A filter unit (10) is provided to retrofit within signal lines that couple analog cockpit gauges (54) to transducers in rotorcraft systems. The filter unit (10) may include a housing assembly (12) and an electromagnetic interference (EMI) filter assembly (14) housed therein. The filter assembly (14) may include a printed circuit board (RGB) (20) having conductive RGB traces (21 ) and a signal line input connector (16) configured to connect to multiple transducer signal lines (50). The filter assembly (14) may also include a signal line output connector (18) configured to connect to multiple analog cockpit gauge signal lines (52) and a plurality of common mode chokes (22) electrically connected between the signal line input connector (16) and the signal line output connector (18). Each common mode choke (22) may be positioned on the RGB (20) so that it does not electrically/magnetically interfere with the other common mode chokes (22).


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    Title :

    ELECTROMAGNETIC INTERFERENCE (EMI) FILTER UNIT FOR RETROFITTING IN ROTORCRAFT SYSTEMS AND ASSOCIATED METHODS


    Contributors:

    Publication date :

    2024-03-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS , Scheinwiderstandsnetzwerke, z.B. Resonanzkreise / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / H01R Elektrisch leitende Verbindungen , ELECTRICALLY-CONDUCTIVE CONNECTIONS / H05K PRINTED CIRCUITS , Gedruckte Schaltungen





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