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Material for making banana sockets

Discussion in 'Electronic Design' started by TomH, Oct 27, 2004.

  1. TomH

    TomH Guest

    Greetings,

    I need to use a large number of banana sockets for a patchbay. Rather
    than buying these by the hundred, I find that I can buy hard brass
    tube of the correct internal diameter for a few cents. Now collegues
    have told me that I must have these plated with nickel or similar to
    get a good contact, but I recall the patchbays used for low level
    microphone signals used in recording studios were often unplated
    brass, and no care was ever taken to clean them, in fact they were
    often filthy with a black greasy deposit. Also scientific and
    laboratory instruments up to the 20's were made with unplated brass
    terminals.

    What do people think, could I get away with unplated brass? My
    application is for patching low level dc voltages in the range +/-10V.

    Regards

    TomH
     
  2. Robert Baer

    Robert Baer Guest

    As long as the atmospher there is not corrosive (sulphor from the salt
    mines, or salt from the deep ocean), you should have no problems.
     
  3. Rich Grise

    Rich Grise Guest

    Your colleagues are idiots. Or maye their brother-in-law has a plating
    shop.

    Brass is superb for that kind of crap. It even solders good. And it
    doesn't corrode much - ever seen a ship bell?

    Have Fun!
    Rich
     
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