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Thread: Power options for HP e-PC

  1. #11
    Maximum Bitrate dodgetimes2's Avatar
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    Quote Originally Posted by MikeH
    AC input power looks to be around 450 watts (wow, that a pretty inefficient power supply...450W in and 145W out).
    Good luck!
    How do you figure 450W?? The manual states that the PC only draws 70W max and an average of 50W, there's no way the power supply would be drawing 450W. I have the older HP e-PC 42 which is rated at drawing 120W max and an average of 45W, I'm running it with a cheap 400W inverter no problem.
    1.6GHz HP e-PC, 768MB RAM, 120GB WD HDD, Slim DVD-ROM, Onboard sound & video, 7" Lilliput, USB GPS Mouse, Audiovox FM Modulator, Vector 400 Watt Power Inverter, Windows XP Pro SP2, iGuidance 2, 15" Samsung LCD for the rear *Carputer not installed*

  2. #12
    FLAC
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    How do you figure 450W??
    From his PSU specs...
    INPUT:
    100 - 127V ~ 4A
    200 - 240V ~ 2A
    MikeH

  3. #13
    Maximum Bitrate dodgetimes2's Avatar
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    I understand Ohm's law but, I believe those ratings are what the power supply could pull, but with the PC only needing around 100W at most, it will never pull the full 4A. Just get a 400W or more inverter and you'll be safe, they're only like $40-$50.
    1.6GHz HP e-PC, 768MB RAM, 120GB WD HDD, Slim DVD-ROM, Onboard sound & video, 7" Lilliput, USB GPS Mouse, Audiovox FM Modulator, Vector 400 Watt Power Inverter, Windows XP Pro SP2, iGuidance 2, 15" Samsung LCD for the rear *Carputer not installed*

  4. #14
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    Alright, what Im trying to understand, is what motherboard I can salvage (I dont want to buy a new mini-itx unless I really have to!) Im not sure how you guys can tell whether I can use a DC-DC solution by looking at my power supply specs. An explanation would be much appreciated! I have got hold of another motherboard whose supply says:

    Input: 100v-127v/8A
    200v-240v/4A

    Output: +3.3V +5V +12V -12V -5V
    14A 22A 8A 0.8A 0.5A
    +5V &3.3V max - 120W

    Anyway I can use this without an Inverter?

  5. #15
    Maximum Bitrate dodgetimes2's Avatar
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    You might be in luck with that one, it was the 19V part of the e-PC power supply that pretty much prevents us from using any readily available DC-DC power supply.
    1.6GHz HP e-PC, 768MB RAM, 120GB WD HDD, Slim DVD-ROM, Onboard sound & video, 7" Lilliput, USB GPS Mouse, Audiovox FM Modulator, Vector 400 Watt Power Inverter, Windows XP Pro SP2, iGuidance 2, 15" Samsung LCD for the rear *Carputer not installed*

  6. #16
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    What 19V?? My e-PC has the power requirements:

    INPUT:
    100 - 127V ~ 4A
    200 - 240V ~ 2A

    OUTPUT:
    +12V 9A MAX
    +5V 7A MAX
    +2V5 12A MAX
    +5VSB 1A MAX

    So what can I use with the new board? For Power?

  7. #17
    Maximum Bitrate dodgetimes2's Avatar
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    Sorry about that, I'm referring to my e-PC it's power supply puts out 12V and 19V.
    1.6GHz HP e-PC, 768MB RAM, 120GB WD HDD, Slim DVD-ROM, Onboard sound & video, 7" Lilliput, USB GPS Mouse, Audiovox FM Modulator, Vector 400 Watt Power Inverter, Windows XP Pro SP2, iGuidance 2, 15" Samsung LCD for the rear *Carputer not installed*

  8. #18
    Registered User Lava's Avatar
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    Quote Originally Posted by sdandeker
    Its a Compaq EVO D510 e-PC, little Silver PC which looks just like the e-PC 40. You can see a pic of one here: http://www.computeruniverse.net/products/e90060430...

    And Yes, The Kettle lead plugs from the Wall Socket directly into the PC....
    I have the same exact e-PC. Got it home from ebay Friday for the size and power and picked up a M2-Atx.

    Then I Noticed that the Power Connector on the motherboard was different from all attachments on the M2.

    Do anybody know if there is an adapter for the mother boards power supply that we can use?
    or Any Other Solution?

  9. #19
    Registered User Lava's Avatar
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    Quote Originally Posted by jcdillin
    honestly for your situaton, I would either find a diffrent PC, or just use an inverter.


    That is exactly what I did. And it works flawlessly.

    sdandeker, I used a Radio Shack 175 watt inverter ($50+ or less) and will be selling the Other M2-ATX and Motherboard that was ordered.

    If you do decide to go with this setup dont forget to get a cigarette lighter accessory outlet if you will be mounting in your trunk - that way you wont have to spice into the wires that come with the Inverter.

    The Inverter also come with a built in USB power source port. Now I just need to find something I need that can use it. Does anyone know of any? Like radio receiver, GPS, any brand that accepts USB power

    Suggestions?


    Lava

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