Waveshaping Circuit using 555 and OneShot LS74123N

Discussion in 'The Projects Forum' started by lew3611, May 10, 2010.

  1. lew3611

    Thread Starter New Member

    Jan 29, 2010
    3
    0
    Can someone pls take a look at this circuit to see if I am hooking it up correctly? I am not getting the expected results of what it should be doing. I will post the actual file as an attachement. I can not get the OS to create or simulate as the text describes. If it is hooked up correctly, then what I am doing wrong?
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Greetings lew3611,

    I moved your post out of the "Project Collection" forum and into the "Projects" forum since post made to that forum are automatically placed in moderation since the content of the "Project Collection" forum is limited to documentation of completed projects contributed AAC members.

    hgmjr
     
    lew3611 likes this.
  3. k7elp60

    Senior Member

    Nov 4, 2008
    478
    69
    If I read your connections correctly you have the output(pin3) connecting to pins 14(Vcc) of the 74121 and 74123. Pin 14 of those two stages needs to be connected to the 5V Vcc line.
     
  4. lew3611

    Thread Starter New Member

    Jan 29, 2010
    3
    0
    Ok I got and /or tried that but it is still not working, was it not supposed to reset and then the one shot again at least for the non triggerable one?
     
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