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Thread: Do I need an Inverter?

  1. #1
    Newbie
    Join Date
    Apr 2002
    Posts
    44

    Do I need an Inverter?

    I currently have a HP e-PC setup in my car, and it uses an ac/dc adapter to power it. The computer is a small little thing, does not have a power supply, like most PC's do. These same ac/dc adapters can also power most HP laptops, especially the older ones.

    So, I've read some posts that people have laptops in their car, and connected right to the lighter, no need for an inverter. If that's the case, can I do that with my PC.

    Here's the specs on the adapter:

    INPUT: 100-240V ~ 1.3A (1,3A) 50/60Hz 118-175VA
    OOUTPUT: 19V 3.16A (3,16A)

    Its a hpf1454a adapter.
    ------------------------------------------------
    Car: 2000 Grand Am GT
    PC: Pentium III 900mhz 40GB 256mb RAM
    Software: Winamp 5.-3 on WinXP
    Stats: 22 second boot, 6300+ MP3's in playlist
    Head Unit: Blaupunkdt Casablanca

  2. #2
    Constant Bitrate
    Join Date
    Oct 2004
    Posts
    137
    You would need another adaptor, but could get rid of the inverter. The reason is because a car is at 12volts unregulated, and you need 19 volts regulated. You can find those adaptors online - I can't find the website I like right now.

    ColdPhreze
    14" LCD, EPIA MII-10000, 256MB, Wireless LAN, GPS, CDRW/DVD, ELM Scan,
    200wRMS inverter (for the screen), CarPC Pro v2.4 Power Controller,
    2 12" Pioneer Premiers, Sony 6x9s, Sony Xplode Class D mono block, Pheonix Gold A/B amp for highs

  3. #3
    Maximum Bitrate EBFoxbat's Avatar
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    Jun 2004
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    Massachusetts
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    837
    Check CarNetix.com I think he's working on a powersupply that outputs 19v
    ,./(0)3

    '04 Canyon 4x4 pickup

    [---PC on hold----working on external fiberglass "tool" box---]

  4. #4
    Constant Bitrate
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    Apr 2004
    Location
    London
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    175
    Hi mate, just thought i'd let you know.

    i too have a hp e-pc (with a 19w ac adtor) i have been using a 300w Inverter with no issue's at all for the last 6 months.

    Let me know what you find as i would be intrested in removing the inverter and the ac-adaptor too.

    Thanks



    Quote Originally Posted by SirCyRo
    I currently have a HP e-PC setup in my car, and it uses an ac/dc adapter to power it. The computer is a small little thing, does not have a power supply, like most PC's do. These same ac/dc adapters can also power most HP laptops, especially the older ones.

    So, I've read some posts that people have laptops in their car, and connected right to the lighter, no need for an inverter. If that's the case, can I do that with my PC.

    Here's the specs on the adapter:

    INPUT: 100-240V ~ 1.3A (1,3A) 50/60Hz 118-175VA
    OOUTPUT: 19V 3.16A (3,16A)

    Its a hpf1454a adapter.
    [SIZE=6]Join Date: Aug 2003
    Location: London, UK
    Vehicle: 2004 320d Sport Touring
    HP-Epc, 512mb Ram, 250gb hd, Lilliput, GPS.
    [/SIZE]

  5. #5
    Newbie Harrie Coolen's Avatar
    Join Date
    Nov 2004
    Location
    Dordrecht, The Netherlands
    Posts
    40
    Hi, i'm using my e-pc with a universal laptop adapter.
    12 volt input and 12 to 24 volts (selectable) output
    @ 5 amp. max. !
    They cost about 50 euro.

  6. #6
    Newbie
    Join Date
    Apr 2002
    Posts
    44
    Thanks for the replies. The inverter does its job great, when it wants to come on right away. That is the only problem I have with it. When its cold out, and I get in my car in the morning, its probably below freezing in my car. The inverter is under the passenger seat. So, when its that cold, it doesn't want to come on sometimes, until the temperature in the car warms up a bit. Anyone else have this problem? I"m not sure the make of the inverter right now, I'd have to check.

    So, my delimea is to try this adapter, or maybe get an inverter that can handle cold weather.

    Anyone got a link to where I can get one of these adapters?
    ------------------------------------------------
    Car: 2000 Grand Am GT
    PC: Pentium III 900mhz 40GB 256mb RAM
    Software: Winamp 5.-3 on WinXP
    Stats: 22 second boot, 6300+ MP3's in playlist
    Head Unit: Blaupunkdt Casablanca

  7. #7
    Variable Bitrate HummDinger's Avatar
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    Aug 2004
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    Milwaukee, WI
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    http://cgi.ebay.com/ws/eBayISAPI.dll...733640869&rd=1
    Here is an ebay link for one. Should work just fine. I used an HP E-pc for about a year with this adapter and had no problems.
    You can still have something if you have nothing

  8. #8
    Newbie
    Join Date
    Apr 2002
    Posts
    44
    Yea, that looks like a good alternative.
    ------------------------------------------------
    Car: 2000 Grand Am GT
    PC: Pentium III 900mhz 40GB 256mb RAM
    Software: Winamp 5.-3 on WinXP
    Stats: 22 second boot, 6300+ MP3's in playlist
    Head Unit: Blaupunkdt Casablanca

  9. #9
    Low Bitrate
    Join Date
    Oct 2004
    Posts
    56
    I have one of these e-pc systems, it takes 19v and 3.125A
    I have a dc-dc convertor which can output 19v at 2.9A would it work or just blow ?

  10. #10
    Newbie R5Paulie's Avatar
    Join Date
    Aug 2004
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    19
    sorry to drag up a really really old thread, but i thought it might be more relevant.
    Ive just bought a e-PC myself, just the PIII 800mhz verson. I have also got a universal laptop adapter that runs from the cigarette lighter socket. The adapter is adjustable, from 12v to 24v. What should i set this to? Should it be 12v or 19v? On the original power block there are ratings for 12 and 19v... Any clues?

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