Results 1 to 6 of 6

Thread: Noise when power connected

  1. #1
    Newbie
    Join Date
    Dec 2008
    Location
    Edinburgh, United Kingdom, United Kingdom
    Posts
    19

    Noise when power connected

    Hello Guys, I'm currently in the very early stages of deploying a car-pc into my car, At the moment i'm not wanting to tear my dash or anything apart. I plan to use a laptop which at the moment is connected to my stero via AUX cable.

    The sound quality is good enough when the laptop is running from the battery however depending on the revs of the car you can hear feedback from the car through the output of the laptop when the battery is charging, What would be the best and simplest way to remove this noise? of course i am aware ideally you want to connect directly to the battery but this is not am option as i'm not wanting to go hacking the car to bits. Suggestions?

    Regards

    Johnny

  2. #2
    FLAC SNOtwistR's Avatar
    Join Date
    Nov 2009
    Location
    Keswick,On Canada
    Posts
    1,596
    Are you using an inverter for power? If you are using the brick that came with laptop, I would at least find a 12v universal laptop charging kit. SNO

  3. #3
    Variable Bitrate camo.b's Avatar
    Join Date
    Nov 2011
    Posts
    382
    Mine has recently developed some noise too.it use to be alternator whine in old cars.pretty sure you use to fit a condensor to the radio earth i think.not sure what the go is now with newer cars and pc's and bigger more involved audio.

    Sent from my GT-N7000 using Tapatalk 2

  4. #4
    Newbie
    Join Date
    Dec 2008
    Location
    Edinburgh, United Kingdom, United Kingdom
    Posts
    19
    SNOtwistR i'm using this - http://www.ebay.co.uk/itm/2809636834...84.m1497.l2649
    CAMO.B - Funny you should say that about an alternator as mine has literally just gone on my motor, it is currently in the garage being replace, Would this have caused the noise in the system? Using the above charge in the car, would that have caused the alternator to go in anyway? What is a condensor to the radio earth?

    I'm currently trying all this out on a 52 plate 1.5 DCI Renault Clio (UK here)

  5. #5
    FLAC SNOtwistR's Avatar
    Join Date
    Nov 2009
    Location
    Keswick,On Canada
    Posts
    1,596
    It very well could have been your altenator, well the diodes anyway. See what happens when you get it back from the shop then go from there if problem still exists SNO

  6. #6
    Variable Bitrate camo.b's Avatar
    Join Date
    Nov 2011
    Posts
    382
    I wouldnd say that caused the alternater failure.it would need to be working a lot harder. say a 2000W inverter with a half dead car battery and mabee you could make it fail.the noise could still be the laptop 12v charger.the condensor was a a small cylinder (3 x 1.5 cm) that had a earthed mounting bracket.the cylinder part had a single wire that was connected to the back of car sterio and somtimes on the ingnition coil of the car.it usually worked.

Similar Threads

  1. LCD making noise when connected to laptop.
    By jabba in forum LCD/Display
    Replies: 8
    Last Post: 07-19-2007, 06:10 AM
  2. Generator noise when my Lilliput 10.4" LCD is connected?!
    By Mastiff in forum General Hardware Discussion
    Replies: 0
    Last Post: 08-21-2006, 02:02 AM
  3. Replies: 5
    Last Post: 07-22-2005, 12:59 AM
  4. Noise from speakers when pc connected to tv?
    By Zombietime in forum General Hardware Discussion
    Replies: 1
    Last Post: 11-16-2004, 02:49 AM
  5. How is the power supply connected?
    By BriCubz in forum Newbie
    Replies: 9
    Last Post: 07-09-2004, 09:15 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
  •