Results 1 to 4 of 4

Thread: AC Adaptor

  1. #1
    Variable Bitrate Fox_Mulder's Avatar
    Join Date
    Apr 2004
    Location
    Melbourne, Australia The Truth Is Out There
    Posts
    319

    AC Adaptor

    I'm getting some flickering on the screen which thanks to this board I seem to have narrowed it down to a groud issue.
    Now the problem is I've tried grounding to the same place, to the battery etc. but the flickering is still there, (It happens when the car is off). But sometimes there is no flickering just a perfect picture.
    One Way to remove the flickering is to isolate the power, either by powering the LCD or the Laptop by their AC Adaptor. I Also get a good picture if I plug the LCD's AC Adaptor into the car inverter (Laptop is powered by a car adaptor).
    My Problem is like the problem in this thread:
    Lilliput screen flicker...
    So I was wondering if anyone else runs their LCD off the inverter rather than that egg adaptor for the lilliput, or does anyone have a schematic for an isolated dc-dc power supply?
    I better hop off the comp now, lightning getting awfully close!

    Thanks.
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  2. #2
    Banned xdjxklusivex's Avatar
    Join Date
    Dec 2004
    Location
    Diamond Bar, CA (909,951)
    Posts
    2,742
    its a major ground problem ive gotten it on every comp that i installed a inverter and lilliput in on my comp i run my lilliput off the opus and i get 100% crisp picture

    are you grounding the laptop case aswell?

  3. #3
    Variable Bitrate Fox_Mulder's Avatar
    Join Date
    Apr 2004
    Location
    Melbourne, Australia The Truth Is Out There
    Posts
    319
    Yep I grounded the case of the laptop. If I remove the ground on the lilliput the flickering gets worse, reattach the ground flickering gets much better but is still there. The inverter is currently hooked up to nothing. The lilliput is running off the egg and the Laptop off a dc-dc targus auto adaptor.
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  4. #4
    Variable Bitrate Fox_Mulder's Avatar
    Join Date
    Apr 2004
    Location
    Melbourne, Australia The Truth Is Out There
    Posts
    319
    Ok after looking at the lilliput again whilst it's on the inverter I noticed it is still flickering.

    I also noticed when I turned up the audio, I could hear like bass beats and some high pitched whine which was in sync with the flickering on the screen.
    I then changed the DC-DC Adaptor to the AC Adaptor for the laptop and plugged that into my inverter. No More flickering! And the bass beats/whine has gone.

    So it seems that the Targus Auto Adaptor is not a very clean regulator, I dont want to have to wire up the laptop to the inverter but it seems that that is the only way, unless I somehow clean up the power comming out of the targus. Maybe one of those in line noise filters might work.
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

Similar Threads

  1. AC Water Cooling?
    By nFiniteTuning in forum Fabrication
    Replies: 16
    Last Post: 12-10-2004, 11:42 AM
  2. ac adaptor
    By bigpoppa in forum Power Supplies
    Replies: 6
    Last Post: 09-23-2003, 03:54 PM
  3. controling ac system with car pc
    By sugarmychurro in forum General Hardware Discussion
    Replies: 4
    Last Post: 05-21-2003, 02:17 AM
  4. 12.5 CTX Pano View AC adaptor needed!
    By outragis in forum LCD/Display
    Replies: 1
    Last Post: 07-29-2002, 12:55 AM
  5. Need help finding an AC to DC power adaptor
    By Squeezer in forum General Hardware Discussion
    Replies: 3
    Last Post: 12-29-2000, 01:27 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
  •