Disconnecting a USB device with one switch

Discussion in 'The Projects Forum' started by programmer6502, Sep 6, 2014.

  1. programmer6502

    Thread Starter Member

    Feb 1, 2014
    126
    6
    Hi,

    I'm working on a project that will have a USB device permanently installed and I want to be able to disconnect that device with just one switch. My question is: to properly disconnect a USB device, can I just disconnect the power pin? Or do all four pins have to be disconnected? If that is the case, is there an IC chip that will do that? Like I said, I want to be able to disconnect all the lines/pins with one switch!

    Thanks!
     
  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,388
    497
    Four Pole Single Throw switch (4PST)? That would be the mechanical way to connect and disconnect all 4 USB lines. Kinda pricy at 10 bucks. http://www.digikey.com/product-sear...ee=0&rohs=0&quantity=&ptm=0&fid=0&pageSize=25

    You could simply use Single Pole Single Throw switch on the power pin, like you said. The computer will keep sending the data and stuff, but the receiving device will be off so it does not care what computer is sending to it.
     
  3. programmer6502

    Thread Starter Member

    Feb 1, 2014
    126
    6
    Perfect, just what I wanted to know! I'll just use the single power switch method.

    Thanks so much!
     
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