Signal Management help

Discussion in 'General Electronics Chat' started by murock, Jan 9, 2014.

  1. murock

    Thread Starter New Member

    Jan 9, 2014
    10
    0
    Hi
    I'm doing a project and am in need of some circuitry that will stay at logic 1 after a pulse has come in that goes from logic 0 to 1 then back to 0.

    I also need something that will return to logic 1 after a signal has come in going from logic 1 to logic 0 and staying at logic 0.
    Any ideas?
     
  2. studiot

    AAC Fanatic!

    Nov 9, 2007
    5,005
    513
    A monostable (also called a one shot)will remain in the 1 position for a set period then return to 0. (othe other way round)

    A Latch will remain in the 1 position indefinitely. (or the other way round)

    Look here for further information

    http://www.allaboutcircuits.com/vol_4/chpt_10/1.html
     
  3. murock

    Thread Starter New Member

    Jan 9, 2014
    10
    0
    Thanks that latch sounds like what I'm after for the first problem
     
  4. murock

    Thread Starter New Member

    Jan 9, 2014
    10
    0
    Still unsure how to get the second one to return to logic 1 after briefly going to logic 0.
     
  5. Veracohr

    Well-Known Member

    Jan 3, 2011
    550
    75
    Put an inverter after a one-shot.
     
  6. huang

    New Member

    Jan 8, 2014
    10
    0
    will the converter help you to solve this problem?
     
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