28v AC bulb tester

Discussion in 'The Projects Forum' started by adamcswant, Apr 19, 2012.

  1. adamcswant

    Thread Starter Member

    Mar 23, 2011
    34
    0
    So I need to build a bulb tester for testing Eiko 1820 bulbs. They require 28v AC, 0.1A and consume about 3W. Any ideas on how I can do this?
     
  2. P-MONKE

    Member

    Mar 14, 2012
    83
    5
    Just use a continuity meter, surely?
    Or are you wanting to test how bright they will be? In which case, get yourself a 28V ac power supply and a bulb holder!
     
  3. gerty

    AAC Fanatic!

    Aug 30, 2007
    1,153
    304
    All you really need is a 120 to 28 volt step down transformer
     
  4. adamcswant

    Thread Starter Member

    Mar 23, 2011
    34
    0
    I definitely need to check them at 28V so that I can confirm their brightness. I've done some searching for a step down transformer... but I can't seem to find a match. Any links to some good sites that would carry one?
     
  5. wayneh

    Expert

    Sep 9, 2010
    12,153
    3,059
    Are you planning on just eyeballing the brightness level? Unless you do side-by-side against a reference, it could be tough to make a judgement.
     
  6. #12

    Expert

    Nov 30, 2010
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  7. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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