Inverters and touch screen devices

Discussion in 'Tech/Mech General' started by NickNic, Aug 6, 2014.

  1. NickNic

    NickNic Funster Life Member

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    Question for anyone more techie than me...

    I have a 2000w pure sine wave inverter fitted.

    When I use it to charge touch screen devices the touch screens don't work whilst they are plugged in. With my Kindle Fire I can't use it at all unless I unplug it, with the iPad the screen goes mad, zooming and scrolling g at random.

    Any ideas?
     
  2. scotjimland

    scotjimland Funster Life Member

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    Wild guess..

    all electrical devices, in this example your inverter, have a magnetic field around them and also give off radio waves or RF .. this could be what is affecting your iPad and Kindle.

    How close are the devices to the inverter ?
     
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  3. NickNic

    NickNic Funster Life Member

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    The length of the charging lead. I could try it with an extension lead and see
     
  4. NickNic

    NickNic Funster Life Member

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    Doesn't seem to make a difference
     
  5. scotjimland

    scotjimland Funster Life Member

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    Please do, a few meters should be enough to prove or disprove the wild guess .. (y)

    posted too late.. just saw the result..

    hmmm.. I'm out of suggestions then
     
  6. scotjimland

    scotjimland Funster Life Member

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  7. NickNic

    NickNic Funster Life Member

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    Thanks Jim, will look at it when it lets me. As other post this site wifi is only letting me on to Fun.
     
  8. hilldweller

    hilldweller Funster Life Member

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    Gets my vote. A capacitive touch screen ( all the good ones ) consists of a transmitter and array of receiver aerials under the screen. It's a tine radar station.

    The RF could be transmitted down the main cable. Some form of ferrite suppressor **might** block it.

    But I'd say 2000W inverted is a mighty inefficient way to charge a few watts of iPad. Find a 12V charger.
     
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  9. NickNic

    NickNic Funster Life Member

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    I was only using it because all the other sockets (12 & 230 volt) in the van were in use. It isn't really there for charging purposes
     
  10. Stroppy Bird

    Stroppy Bird Funster

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    NickNic - it doesn't help your current issue but to increase the 12v charging capacity in my van I bought 2 of these
    http://www.ebay.co.uk/itm/12V-24V-1...CommercialVehicleParts_SM&hash=item417773a116
    and mounted them by the 12v sockets.

    The supported 10amps across the 3 outlets is ample for most needs.

    Then in one of the sockets on each adaptor I've put in one of these
    http://www.ebay.co.uk/itm/Black-Dua...924?pt=LH_DefaultDomain_3&hash=item1e82a154a4

    So now I've enough sockets availbable for both mine and hubby's stuff.
     
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