Triac reply circuit need help

Discussion in 'General Electronics Chat' started by mpcotuong, Aug 29, 2010.

  1. mpcotuong

    Thread Starter Member

    Aug 26, 2010
    170
    0
    I have this circuit but not working. Is anyone can help me to make it work? Maybe I have not connect GND from VCC? Any idea?

    Please see next page for picture. I forgot attach
     
    Last edited: Aug 29, 2010
  2. mpcotuong

    Thread Starter Member

    Aug 26, 2010
    170
    0
    Please let me know why not working.

    Thanks, for your help
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,343
    Hello,

    Can you post the picture in .png format?
    I can not read the .docx format.

    Bertus
     
  4. mpcotuong

    Thread Starter Member

    Aug 26, 2010
    170
    0
    Please review. I have attached pdf file.

    Thanks,
    Kevin
     
  5. marshallf3

    Well-Known Member

    Jul 26, 2010
    2,358
    201
    Looks simple enough to me. If you had +5V DC on the Vcc supply and grounded the wire labeled as lamp control it should trigger the triac on.
     
  6. mpcotuong

    Thread Starter Member

    Aug 26, 2010
    170
    0
    Yes, I did that but not worked.

    Thanks,
    Kevin
     
  7. marshallf3

    Well-Known Member

    Jul 26, 2010
    2,358
    201
    Try moving the resistor to the other side of the triac.
     
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