Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: carnetix and laptop

  1. #1
    Newbie
    Join Date
    Dec 2005
    Posts
    6

    carnetix and laptop

    I recently aquired a compaq e500 laptop, and have decided to use it in the car. After searching, I am pretty sure how to power it in car with the carnetix p1900, but just want to confirm my ideas here.

    In order for it to work, I just need to get a tip that fits into the laptop power supply splice that into the wires off the carnetix, and then select the correct voltage for the laptop, correct? Or am I way off base here?

  2. #2
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
    Join Date
    Oct 2004
    Location
    NY
    Posts
    6,234
    that's the begining, but then you need to have a way to tell the carnetix that the pc is on, & you need to acess the pwr switch of the laptop, so the carnetix can start & shut it down...

  3. #3
    Low Bitrate RickS's Avatar
    Join Date
    Nov 2005
    Location
    Bethesda, MD
    Posts
    86
    You also need to make sure the laptop power connector is just a ground and voltage...a lot of new ones have a third (or more) pins that tell the laptop if you're using a original power brick and won't charge if you aren't.

  4. #4
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
    Join Date
    Oct 2004
    Location
    NY
    Posts
    6,234
    yeah, newer dells are bad with that... some compaqs too I think, if theres 3 connections instead of 2, you may have an issue there...

  5. #5
    Newbie
    Join Date
    Oct 2006
    Posts
    13
    Actually, if you are connecting the Carnetix PS to a laptop, you should be able to configure the Power Management properties of Windows to hibernate when external power is removed. (You would then be powering off the batteries of the laptop for the duration of the shutdown period.) Of course, the laptop wouldn't come back on automatically when power is restored, unless you have some sort of ACPI function in your BIOS to 'Turn on when power is restored'. This would be much easier than trying to connect an ACPI interface from the PSU to your laptop.

  6. #6
    Low Bitrate Serialk1llr's Avatar
    Join Date
    May 2006
    Posts
    85
    not to threadjack, but if he has one of those newer disctiminating power plugs, how does one get around that hurdle?

  7. #7
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
    Join Date
    Oct 2004
    Location
    NY
    Posts
    6,234
    best way really is to use a car adaptor made for the laptop, like a lind or something... it's not that no car adaptor works, they do have one that will work with it, just has to be the right one...

    I did a dell once... they use 3 pins... one ground, one 12v & one 19v, all from the same supply, but the laptop runs on the 19v alone no problem, just doesn't charge the battery.... I never tried giving it both voltages, but assumed it would work, but complicate it... I don't use batteries most times anyway, & if everything is wired correctly, you don't need the battery at all...

    as far as setting up windows to hibernate as power is lost, that defeats the purpose of using a startup/shutdown controller in the first place... not only that, but for the power supply to even work, it does need to know weather the computer is on or of, otherwise it'll keep sending out a pulse to attempt to start it for the whole duration it's on!!.... it's not hard to do this interface at all... I did a thread once, it was an opus, but same thing really...

  8. #8
    Constant Bitrate tdb30_'s Avatar
    Join Date
    Aug 2005
    Location
    Central MA
    Posts
    175
    Does the P1900 have a startup/shutdown controller? I was thinking it was just a regulated PS with no fancy features. I have a dell inspiron 2200 and I plan on getting a motorized touchscreen and was going to power them from a P1900.

    I was thinking it would work just as the original poster suggested. Now I'm kind of worried.

  9. #9
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
    Join Date
    Oct 2004
    Location
    NY
    Posts
    6,234
    it does have a startup/shutdown controller. the biggest problem could be charging the battery I guess... do your research really, check for 3 connections or 2... the third is hard to notice but it's sometimes the inner part of the outer hole...

  10. #10
    Newbie
    Join Date
    Dec 2005
    Posts
    6
    As far as I can find out, it is a 2 pin connection for the laptop, so I should be good to go.

Page 1 of 2 12 LastLast

Similar Threads

  1. Carnetix powering laptop
    By poxin in forum Power Supplies
    Replies: 1
    Last Post: 10-20-2006, 08:13 AM
  2. What could cause this problem? (laptop related)
    By Rocky388 in forum Laptops, Netbooks, Tablets, UMPCs, etc.
    Replies: 5
    Last Post: 09-17-2006, 04:17 PM
  3. Carnetix P1900 + P5V + Laptop (90W) + USB + LCD
    By drPheta in forum Power Supplies
    Replies: 0
    Last Post: 09-01-2006, 01:06 AM
  4. P1900 + Dell Laptop and docking station
    By wittless in forum Laptops, Netbooks, Tablets, UMPCs, etc.
    Replies: 11
    Last Post: 01-07-2006, 01:20 AM
  5. Carnetix p1900 and Travla c138 120watt?
    By john_draws in forum Power Supplies
    Replies: 3
    Last Post: 05-27-2005, 01:42 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •