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Thread: PC Power & Cooling 12V supply

  1. #1
    Newbie
    Join Date
    Aug 2000
    Location
    Good Hope,IL USA
    Posts
    9

    PC Power & Cooling 12V supply


  2. #2
    Variable Bitrate
    Join Date
    May 2001
    Location
    Thessaloniki, Greece
    Posts
    274
    No, so I can't comment on that.
    Compare before you buy - it's much less powerful than Keypower's ATX PSU and not much cheaper.
    It might look smaller 'cause it's not cube shaped, but almost 8 inches long.

    Edit: I just found out that it's a good match with their SleekLine enclosures though (which in turn is a good match with FlexATX motherboards like FV24 - if you don't want to/can't build your own case)!
    In case you contact them, ask if they are selling the SleekLine+ case with this 12V DC-DC PSU instead of the mains one. I would love to have one of these in my trunk.

  3. #3
    Variable Bitrate
    Join Date
    May 2001
    Location
    Thessaloniki, Greece
    Posts
    274
    Don't bother - too expensive.

  4. #4
    FLAC
    Join Date
    Jan 2001
    Posts
    1,612
    Efficiency: 65%

    Not much better than an inverter

  5. #5
    Newbie
    Join Date
    Aug 2000
    Location
    Good Hope,IL USA
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    9
    Originally posted by bgoodman
    Efficiency: 65%

    Not much better than an inverter
    I looked at the specs for the Keypower 250Watt ATX PS and noticed the efficiency for it was also 65%, so got to wondering, what is the efficiency of supplies like Sproggy's?

  6. #6
    Variable Bitrate
    Join Date
    May 2001
    Location
    Thessaloniki, Greece
    Posts
    274
    Bgoodman,

    when you are using an inverter to power a mains PSU you have to calculate the overall efficiency of the system by multiplying the two efficiencies.

    For example if you use an inverter (with let's say efficiency 65%) and a mains PSU with 80% (propably with less efficiency - closer to 65% - I don't see why an AC-DC should be more effient than a DC-DC commercial PSU) the overall efficiency of the setup that supplies your computer should be:

    0,65 X 0,80 = 0,52 or 52%

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