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How to wire 5 pin Jack

Discussion in 'General Electronics Discussion' started by Einstein Jr., Oct 31, 2014.

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  1. Einstein Jr.

    Einstein Jr.

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    0
    Oct 21, 2014
    Hi again!

    I have a project that amplifies a certain sources sound and feeds it to a jack. So I have two wires for attaching to the jack: ground and the signal wire. The jack is this one: http://www.amazon.com/3-5mm-Female-...F8&qid=1413910993&sr=8-7&keywords=3.5+mm+jack. The middle I presume is ground and I believe the two sides are for two different channels but why would there be two pins per channel. Any thoughts appreciated.
     
  2. KrisBlueNZ

    KrisBlueNZ Sadly passed away in 2015

    8,393
    1,268
    Nov 28, 2011
    Look at the first question on that product page. Each channel has one pin for the contact that touches the plug, and a second pin for a "switched" contact, which normally connects to the first pin but disconnects when the plug is inserted. In some cases, this enables you to switch the signal to a different part of the circuit (e.g. a speaker amplifier) when nothing is plugged into the socket, but disconnect the signal from that part of the circuit when something is plugged in.
     
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