Image Map Image Map
Results 1 to 3 of 3

Thread: Gavilan Mobile Computer PSU brick Polarity

  1. #1
    Join Date
    Jun 2012
    Location
    Livermore, CA
    Posts
    366

    Default Gavilan Mobile Computer PSU brick Polarity

    Hello,
    I have a Gavilan Mobile Computer. It is very good condition. unfortunately some clipped of the barrel end off the power brick. I have found one that will fit, but I am not sure about the polarity. There is no polarity symbol anywhere on the unit, documentation, or online pictures I could find. The cord has a white strip on one side, but that is not helpful.
    This unit was produced in 1984. Do you think by this time the polarity could have been standardized to center pin positive?
    Atari Falcon030, Atari MSTE, Atari PS3000, STACY 4, 4160STE-CosmosEX, Atari PC1, 400/800/1200XL,800XL,800XE,130XE, XEGS, Apple IIGS, TRS-80 4P, TI 99/4A, Co-Co 3, Amiga 500, C64/128D

  2. #2
    Join Date
    Jan 2007
    Location
    Pacific Northwest, USA
    Posts
    33,633
    Blog Entries
    18

    Default

    Nope--even today, there's no standardization. Are there any external signal connectors? For example, if you have a DB25 for serial port, check for continuity between pin 7 (ground) and both sides of the power connector. The one that shows continuity is the negative pole of the power supply. The same can be done with external monitor connectors or parallel printer port connectors.

  3. #3
    Join Date
    Jun 2012
    Location
    Livermore, CA
    Posts
    366

    Default

    Thanks you. Very helpful.
    I got the polarity now!!!
    I will remember this easy tip!!
    Atari Falcon030, Atari MSTE, Atari PS3000, STACY 4, 4160STE-CosmosEX, Atari PC1, 400/800/1200XL,800XL,800XE,130XE, XEGS, Apple IIGS, TRS-80 4P, TI 99/4A, Co-Co 3, Amiga 500, C64/128D

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
  •