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Attenuating induced HF on connecting leads

Discussion in 'Electronic Design' started by David Fussell, Nov 1, 2003.

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  1. Hi,

    I am in the process of adding a (solid-state) relay driver board as a
    board' to an existing design/enclosure. I have to take the
    relay 'contact' connections to a new connector in the enclosure, for
    connection to the outside world. The 'contacts' will be passing < 50mA
    @ 24V. The inductance of the load will only be that of wiring,
    therefore I'm not so concerned with the likelyhood of large current
    spikes, more the issue of attenuating any induced HF component(s) that
    may be picked up by the connections to the load, and thus brought into
    the enclosure (and vice-versa). I'd imagined that ferrite beads were
    usually used for this purpose, but was wondering what other techniques
    were in use. (Ferrites might prove difficult to apply since the
    connector is PCB mounting). Will simply adding some series inductance
    to each lead achieve the desired effect?


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