Results 1 to 10 of 10

Thread: Power Help / Suggestions

  1. #1
    Newbie
    Join Date
    Apr 2008
    Posts
    24

    Power Help / Suggestions

    Hey Guys,

    I will be powering a MacMini off of a Carnetix 1900 and will need to power three 7" LCD panels. One being a touchscreen and the other two will be headrest mounted monitors.

    Any ideas of how I should power all three? Will I need to run another PSU like he 1900 down?

    Thanks

    Clownzer


  2. #2
    Newbie
    Join Date
    Apr 2008
    Posts
    24
    Any Ideas on this one?

  3. #3
    Constant Bitrate golfguy's Avatar
    Join Date
    Nov 2006
    Location
    Fort Worth, TX
    Posts
    180
    A Mac Mini specs out max continuous power at 110W from Apple's website. A Xenarc 700TSV is shown as <8W at Xenarc's website. A Lilliput is about 9W. A P1900 can put out 140W. So, assuming you have three screens and a Mini, you'll be almost to 140W. I would add one screen at a time and see what happens. You can always add another regulator if one of the screens pushes it too high.
    Any day is a good day for golf.

    Mazdaspeed6 Carputer Progress: Gone
    (Check Speedy's Install)

    Speedy was traded for a 2004 350z - Install complete except for permanent screen installation.

  4. #4
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,049
    Monitors come with regulators. Xenarcs are inside the monitor, and lilliput is on the wire in the "egg". No need to power them off your PSU at all.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  5. #5
    Newbie
    Join Date
    Apr 2008
    Posts
    24
    Quote Originally Posted by 2k1Toaster View Post
    Monitors come with regulators. Xenarcs are inside the monitor, and lilliput is on the wire in the "egg". No need to power them off your PSU at all.
    Then how would you suggest powering them? I really don't want to use DC to AC converters and have a power strip running off of one.

    Thanks!

  6. #6
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,049
    Just wire to the +12v from your car. That simple.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  7. #7
    Newbie
    Join Date
    Apr 2008
    Posts
    24
    Quote Originally Posted by 2k1Toaster View Post
    Just wire to the +12v from your car. That simple.
    Duhh,

    Awsome! Thanks again so like the computer I dont need to worry about the startup and shutdown "crank" issue. It wont blow all my LCDs out?

    Thanks

  8. #8
    FLAC
    Join Date
    Oct 2006
    Location
    Las Vegas
    Posts
    1,286
    The LCD's have power supplies either in them or as part of the DC power cable (for the lilliput). The LCD's power supplies turn your car's unregulated 12V DC into the regulated voltages it needs, regulated +12V.
    Computers need power supplies too. But until a few years ago, your only choice was an AC in power supply that among other things provided regulated +12V and +5V DC output to the motherboard and all of the other components that plug in with those white 4 wire molex connectors. Since your computer's parts need regulated power, you can't just plug it into the car's 12Volt system, and besides, what about the 5 Volts?

    In short: Yes, you do need either an inverter and AC power supply, or a DC-DC power supply. I'm sure this stuff is in the FAQ somewhere, but it's not like I'm killing trees, I guess.

  9. #9
    Newbie
    Join Date
    Apr 2008
    Posts
    24
    Quote Originally Posted by h3rk View Post
    In short: Yes, you do need either an inverter and AC power supply, or a DC-DC power supply. I'm sure this stuff is in the FAQ somewhere, but it's not like I'm killing trees, I guess.
    Ok great write up! By this last part you meant... in short yes COMPUTERS need the inverter or the DC-DC power supply since LCDs do NOT need them because it is already built in.

    Correct?

    Thanks again

  10. #10
    FLAC
    Join Date
    Oct 2006
    Location
    Las Vegas
    Posts
    1,286
    Yes.

    Now with Lilliputs, some people have had problem with the "egg" regulator, so people have used 12V 'point of load' regulators. If you want, look them up in the forum with the search feature, and then in the store if you want one.

Similar Threads

  1. FAQ: Power Supplies Explained (Part 1)
    By Bugbyte in forum The FAQ Emporium
    Replies: 14
    Last Post: 06-10-2007, 08:45 AM
  2. FAQ: How to Wire an OPUS PSU
    By Quattro in forum The FAQ Emporium
    Replies: 74
    Last Post: 08-26-2006, 01:38 PM
  3. suggestions on power supply
    By scott_fx in forum Power Supplies
    Replies: 43
    Last Post: 01-21-2005, 01:41 AM
  4. Replies: 7
    Last Post: 06-15-2004, 10:29 PM
  5. Install coming up... but Power questions
    By technopsych in forum Power Supplies
    Replies: 1
    Last Post: 04-14-2004, 08:14 PM

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
  •