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Thread: BEST way to power up an HP E-PC???? HELP

  1. #1
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    BEST way to power up an HP E-PC???? HELP

    Hi I recently bought an HP E-PC one of the older ones, 900mhz, 128, 20gb, and I have research everywhere for ways to power it up but havent found much.
    I saw somewhere where it says that they already come 12v so you dont need a power inverter, is this true?
    I have been looking at a m1-atx, I dont know if you can plug this to the e-pc.
    I really want the start-up shutdown controller?
    PLEASE Help

  2. #2
    Constant Bitrate
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    sosamaya,

    I have the same pc, been using it for over a year now, nice bit of kit, cant help you with the shutdown ctrl, but i use a 300watt inverter which is connected to the ac adaptor that comes with the epc, i have also extended the inverter switch to the front of the car so i dont have to open the boot up all the time to power it on, when i finish using it i simply reboot the pc, when the screen shows out of signal i power it off, when i need to use it just power the inverter switch on.

    I've also had it fully working in Hibernate mode, simply select hibernate, again when the screen show out of signal power it off, and finally power it on and it boots up once again.

    I would love to know where you heard about the 12v direct line in.

    Hope this helps buddy.
    [SIZE=6]Join Date: Aug 2003
    Location: London, UK
    Vehicle: 2004 320d Sport Touring
    HP-Epc, 512mb Ram, 250gb hd, Lilliput, GPS.
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  3. #3
    FLAC
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    Guys,

    Which e-PC do you have? HERE is the manual for the e-PC 40. It states in the manual that the e-PC 40 has a +19V/110Watt AC-DC adapter. This means the CarNetix P1900 will work with it. However, it looks like a weird power connector. You may have to do some cutting and splicing to make it work.
    MikeH

  4. #4
    Constant Bitrate
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    Mike, i have the HP E-PC s10 version

    just check the manual and it state's the following :

    Power source (AC/DC adpator)
    Input 100-240v 1,500mA, 60/60Hz
    Output 19v, 3 160mA

    Please let me know if your unit would work on mine, also please if possible let me know the advantages to it over my current Inverter, also would you know how i would need to wire it up.

    Thanks, and looking forward to your answer's.

    Roger
    Power Comsumption Nominal 40w
    [SIZE=6]Join Date: Aug 2003
    Location: London, UK
    Vehicle: 2004 320d Sport Touring
    HP-Epc, 512mb Ram, 250gb hd, Lilliput, GPS.
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  5. #5
    FLAC
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    Roger,

    Sounds like it should work OK. I'm assuming that the spec really says 19V @ 3160mA (3.16 amps). This will be fine.

    Again, if it has a funky power connector you'll either have to cut the existing power cable from your AC-DC adapter, or figure out a way to connect the the mobo internally. Have you taken the unit apart? Can you snap some pictures of the connection between the internal power section and the mobo? It may be that the PSU is built into/onto the mobo. Is this case the only quick solution is to cut/splice the existing power cable. That's what we're doing for the Mac mini applications (here are some pictures of how we did this).

    The DC-DC solution is typically preferred over an interter solution because it is generally more efficient and is less noisy (electrically speaking). It usually ends up be a bit more space efficient also.

    Hope this helps!
    MikeH

  6. #6
    MySQL Error jcdillin's Avatar
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    My E-PC has a standard barrel connector like you would find at radioshack. and it's the older 900mhz model. I have run it from a laptop DC adapter with no problems.
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  7. #7
    FLAC
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    JC,

    Does yours have a model number somewhere on it? The e-PC 40 manual shows some sort of large RJ-type connector, like an oversized RJ45 (LAN) connector. Sounds like they are not all the same.

    Does your laptop adapter have a label on it? Does it show the output voltage & current capabilities? How about total power?
    MikeH

  8. #8
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    The power supply from carnetix seems to be a really good option.
    I see it would come out in april, Do we have a date?
    PLease anyone that knows how well would that work with our e-pcs, tell us about it.
    Would it be conected straight from the ac adaptor of the computer to the battery?

  9. #9
    MySQL Error jcdillin's Avatar
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    mine is a E-PC C10 and the laptop adapter I used with it was rated for 3.5A and the current rating of the PC is 3.16A.

    here is a picture of the back
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  10. #10
    MySQL Error jcdillin's Avatar
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    and the front if it helps any
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