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Discrete 555 KISS Style (11 Transistors)

Discussion in 'General Electronics Discussion' started by iimagine, Aug 7, 2019.

  1. iimagine

    iimagine

    47
    7
    Oct 23, 2013
    Just incase of an apocalypse and I need a 555...
    DeleteMe.PNG
     
  2. AnalogKid

    AnalogKid

    2,289
    646
    Jun 10, 2015
    Reset input?
     
  3. iimagine

    iimagine

    47
    7
    Oct 23, 2013
    Oops! I forgot about that.
    DeleteMe2.PNG
     

    Attached Files:

  4. iimagine

    iimagine

    47
    7
    Oct 23, 2013
    I made a mistake, the emitter of Q12 should be connected to the base of Q6 instead
     
  5. Harald Kapp

    Harald Kapp Moderator Moderator

    9,136
    1,844
    Nov 17, 2011
  6. iimagine

    iimagine

    47
    7
    Oct 23, 2013
    Thanks for the link.
    To be honest, I tore that circuit apart and made it into a much simpler, basic bare-bone version
     
  7. AnalogKid

    AnalogKid

    2,289
    646
    Jun 10, 2015
    While the operation might be identical, there are significant differences in performance between your circuit and the original. Are you aware of what they are?

    ak
     
  8. iimagine

    iimagine

    47
    7
    Oct 23, 2013
    Speed and accuracy and of course the RC timing calculation will be way off
     
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