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Strange electronic symbol

Discussion in 'The Projects Forum' started by sportsfan27, Feb 9, 2009.

  1. sportsfan27

    Thread Starter Active Member

    Jan 29, 2009
    43
    0
    I came upon another strange symbol. It looks like a box containing an NPN transistor symbol at one end and a diode symbol at the other. There are 2 arrows pointing from the diode symbol to the transistor symbol. The schematic I found this in says "CT324 EL817 Everlight." I searched these numbers at DigiKey.com and "CT324" is a non inverting line driver, and "EL817" is an op amp. I don't have a clue what this is. Thanks for any help.
     
  2. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,208
    427
    That's an optoisolator
     
  3. triggernum5

    Senior Member

    May 4, 2008
    216
    1
  4. sportsfan27

    Thread Starter Active Member

    Jan 29, 2009
    43
    0
    Ahhh...so that's what it is. Thanks for your help
     
  5. Audioguru

    Expert

    Dec 20, 2007
    11,251
    1,350
    Digikey doesn't sell much cheap stuff.
    Look for these things at a datasheet site.
     
    Last edited by a moderator: Feb 9, 2009
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