TV lamp polarity

Discussion in 'General Electronics Chat' started by praondevou, Nov 26, 2012.

  1. praondevou

    Thread Starter AAC Fanatic!

    Jul 9, 2011
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  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    it will not work with the wrong polarity, they have put a cable on the lamp for you to prevent incorrect wiring.
     
  3. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    This is likely a Plasma Discharge Lamp. Proper polarity is required or correct ionization will not occur!

    http://en.wikipedia.org/wiki/Plasma_lamp

    Panasonic used them in projection TVs, it may be that Toshiba uses them too. They are supposed to last a very long time with high efficiency.
     
  4. praondevou

    Thread Starter AAC Fanatic!

    Jul 9, 2011
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    Yes they come with connector that does not allow polarity inversion.
    However , he asked me to test the lamp with a DC power supply.
    If inverted will it just not work or will it damage the lamp?

    Can I tell from looking at the lamp what pin is what pole?
     
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