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Thread: Need help trying to use PicoPSU-80 in car.

  1. #1
    Newbie
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    Jan 2011
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    Need help trying to use PicoPSU-80 in car.

    I'm trying to be cheap and easy, by using a PicoPSU and a generic atx switch with me manually hibernating/shutting down the computer.

    I purchased this to power it off of the cigarette lighter. I would only turn on the PC after the ignition was started.

    I also bought a compatible DC connector to connect to the Enercell adapter. When I plug it all in, I just hear a strange whining noise through my speakers and no LED is lit on the PicoPSU.

    Any ideas on what I'm doing wrong?

  2. #2
    MySQL Error soundman98's Avatar
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    yes, your using a pico psu... seriously, you paid $5 in a effort to save $10, and it is going to end up costing you $50...

    1. any pico psu will not provide any regulated power on the 12v rail. this means that you need to provide regulated power--if not, you will destroy your motherboard, and other 12v devices..

    2. car voltage can swing from 5v to 15v.

    3. that adapter is only to plug something into the cig lighter, and does not provide any filtering.

    4. the whine is a ground loop-- this is typical of using cig lighter plugs. i recommend hardwiring the pc to the battery.

  3. #3
    Newbie
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    Hmm, I appreciate the input. So the PicoPSU was basically a waste? No way for it to work?

  4. #4
    MySQL Error soundman98's Avatar
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    to say that there is no way is too specific. with enough time and money, i believe anything is possible. in this case, it is just not financially realistic---primarily by purchasing a large-enough capacity dc-dc 12v adapter--but not while remaining under the price point of a car-specific dc-dc power supply.

  5. #5
    Variable Bitrate
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    If you absolutely require that form-factor (power supply on the plug) you should take a look at M3 power supply - pretty much the same thing as Pico, only it will stabilize the voltage swings common in the car. It looks the same as Pico PSU except for it's blue instead of yellow

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