ne555 timer

Discussion in 'General Electronics Chat' started by kcx, May 5, 2013.

  1. kcx

    Thread Starter New Member

    Mar 10, 2013
    2
    0
    hello guys, I am doing a project using ne555, 4026 and 7-segment display. I am wondering how to fixed the running time using ne555. The circuit I tried is keep running from 0 to 99(non-stop).So, I want to fixed it to 60s(I am when it run until 60 it will stop). Anyone can help me solve this problem.:confused:
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,977
    744
    Can you post your circuit so we can assist you further please?

    If your using the CD4026 then you need to put a high signal on pin 2 when the count is at 60, to inhibit further clocking.
     
    Last edited: May 5, 2013
  3. MrChips

    Moderator

    Oct 2, 2009
    12,432
    3,360
    Consider replacing the NE555 with TLC555 or LMC555. These are CMOS versions, require less current and put less noise on the supply lines.
     
  4. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    Schematics are the true language of electronics. Without a schematic we can only guess.
     
  5. kcx

    Thread Starter New Member

    Mar 10, 2013
    2
    0
    This is the circuit I used
    [​IMG]
     
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