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Earth loop, the cause ?

Discussion in 'Beginner Electronics' started by Norman, Aug 19, 2003.

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  1. Norman

    Norman Guest

    I know how to create an earth loop but what causes it and how do I stop it ?

    I have two PA amps that work perfectly, but if I connect a slave output from
    one into the other I get a great deal of mains hum. HELP.
  2. Frontier

    Frontier Guest

    IF the link is a 2 wire link disconnect the screen from one end.This will
    remove the loop, and as lomg as both amps are properly earthed there are no
    safety issues.Try it to see if it works before you go to the expense of
    isolating transformers.
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