Results 1 to 9 of 9

Thread: Do I still need an inverter?

  1. #1
    Newbie
    Join Date
    Dec 2007
    Posts
    9

    Do I still need an inverter?

    I am a bit of a noob when it comes to powering cpu’s, I have a desktop that I am using as a carputer but before I install I want to be able to have it auto on/off with the turn of the key. So my question is if I have a startup/shutdown controller like a M4-ATX would I still need an inverter and the power brick that normally plugs into the wall? Or do I just run a wire to the battery from the controller, if that is the case how will it know to only draw power when the key is turned? It is also my understanding that the startup/shutdown controller only tells the computer to turn on will it also be the source to keep it on while the car is on? Thanks in advance.

  2. #2
    FLAC SNOtwistR's Avatar
    Join Date
    Nov 2009
    Location
    Keswick,On Canada
    Posts
    1,644
    your m4 will power your pc in your car, no need for inverter and power brick hope it helps SNO

  3. #3
    Variable Bitrate Wayne613's Avatar
    Join Date
    Apr 2009
    Location
    Delaware
    Posts
    306
    Quote Originally Posted by MAYNEMAG View Post
    Or do I just run a wire to the battery from the controller, if that is the case how will it know to only draw power when the key is turned? It is also my understanding that the startup/shutdown controller only tells the computer to turn on will it also be the source to keep it on while the car is on? Thanks in advance.
    The M4-atx, and those like it get a direct (fused hopefully) line to the battery to draw from to actually get the necessary power when running.

    The car's accessory line, or ignition line is then connected to the M4-atx to tell it when it should turn off or on, depending if it has power. This lets it act and generally function the same as your car stereo would. Jumpers provided on the board can further fine-tune how you want it to act, how long it takes to shut-off, turn on delay from sensing power on ACC line, etc..

    Assuming you bought the m4 from mini-box you'd want to be able to look at the manual and know what, why and how before you really get going. Understanding why and what it does will give you all the how's in most instances.
    2008 Ford Mustang GT/CS CARPC(99%)
    Software: Ride/Road-Runner, Digital FX skin 5.x, iGuidance 2011, GPSgate on Win7 64bit

  4. #4
    Newbie
    Join Date
    Dec 2007
    Posts
    9
    Thanks, this helps me understand it better. I have not purchased the M4 yet but wanted a little insight before purchasing the wrong thing. Here's another question it seems that my cpu has the power brick like a laptop not the normal wall cord like a desktop computer, does that make a difference?

  5. #5
    Variable Bitrate Wayne613's Avatar
    Join Date
    Apr 2009
    Location
    Delaware
    Posts
    306
    Quote Originally Posted by MAYNEMAG View Post
    Thanks, this helps me understand it better. I have not purchased the M4 yet but wanted a little insight before purchasing the wrong thing. Here's another question it seems that my cpu has the power brick like a laptop not the normal wall cord like a desktop computer, does that make a difference?
    I'm not totally sure I'm interpreting this correctly. Your saying there's a power brick going to the desktop? You'd want see the desktop's manual, and/or to open the PC to see how it's being powered to make sure you get the correct DC-DC automotive power supply. They're made specifically for a type of molex connector to the motherboard, usually 20pin ATX. The extra 4 that the usual motherboard would use for extra power is optional on most of these(See here.). In addition, the separate stand alone 4 pin square molex power plug is often not included either, if you motherboard has it. The m4-atx has it though from what I recall of the manual.

    Oh, and I'm going to try not to be too biased, but look through the various m4-atx threads here with a search first before you buy one of these. Just sayin....*cough*opus 360*cough*

    Just as background information: These usually only give you 1 or 2 molex connectors (mentioned above) for the motherboard, a single hard drive, and a remote line that goes to your amplifier normally to give it the additional delay to prevent the lovely thump you'd get otherwise if you power the amp before the audio is engaged from the computer. The M4-atx gives you a couple additional power hookups for an added HDD or CD-ROM you normally wouldn't get.
    If you need or want more than this you will have to adapt the DC-DC PSU you purchased, use additional DC-DC PSU's, or use another built for the express purpose of powering just peripherals; powered usb hubs, external hard drives, etc. All of which depending on how you want to go, and if your going to overtax the original DC-DC PSU you've purchased or not.
    2008 Ford Mustang GT/CS CARPC(99%)
    Software: Ride/Road-Runner, Digital FX skin 5.x, iGuidance 2011, GPSgate on Win7 64bit

  6. #6
    Newbie
    Join Date
    Dec 2007
    Posts
    9
    here is the link http://cgi.ebay.com/PDS-XC-Cube-Mini...item53e49bc397to the exact same computer I have, it was given to me by a friend so I don't know much about it but as you can see from the pic it has a plug just like a laptop, hope this helps.

  7. #7
    Newbie
    Join Date
    Dec 2007
    Posts
    9
    Here's a link to the exact same kind of computer I have, hope this helps
    http://cgi.ebay.com/AOPEN-MZ855-II-1...item4aa375876c

  8. #8
    MySQL Error soundman98's Avatar
    Join Date
    Jan 2008
    Location
    on the border of northern IL/IN
    Posts
    5,820
    Quote Originally Posted by Wayne613 View Post
    ...and a remote line that goes to your amplifier normally to give it the additional delay to prevent the lovely thump you'd get otherwise if you power the amp before the audio is engaged from the computer...
    not all setups will have a turn-on pop when the carpc turns on after the amps-- mine doesn't. i recommend trying it without before using this feature..

    being that you have not listed the computer model number, it is impossible to determine the correct power supply you need.

    it sounds like any atx-compliant power supply will not work with your pc, and a carnetix unit would be a better choice, though, it is tough to say at this point..

    but instead of me spoonfeeding you the answer, you will need to do some work to understand what power supply you need, and why you need it. please look over the first part of the faq's on power supplies:
    http://www.mp3car.com/vbulletin/advfaq.php

  9. #9
    Newbie
    Join Date
    Dec 2007
    Posts
    9
    Thanks for all the help, when I originally posted my question I wasnt in front of the cpu. I have found out that what I have is a xc cube with an AOPEN motherboard and it seems that Carnetix has exactly what I need. I will be ordering asap. Thanks guys.

Similar Threads

  1. relay on a power inverter
    By gtz in forum Hardware Development
    Replies: 7
    Last Post: 08-16-2006, 05:54 PM
  2. Problems I've had with inverter (Sima 300w - 600w)
    By dagnasty in forum Power Supplies
    Replies: 5
    Last Post: 01-21-2006, 09:13 AM
  3. inverter startup prob~!
    By bulgogi777 in forum Power Supplies
    Replies: 15
    Last Post: 10-15-2005, 02:20 PM
  4. relay, inverter, fuse problems
    By cheesyhoward in forum Power Supplies
    Replies: 5
    Last Post: 06-02-2005, 09:04 AM
  5. odd inverter behavior
    By jshrieve in forum General Hardware Discussion
    Replies: 30
    Last Post: 04-10-2001, 04:53 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
  •