(on/off) push button using Flip Flop

Discussion in 'Embedded Systems and Microcontrollers' started by biraaa, Apr 18, 2008.

  1. biraaa

    Thread Starter New Member

    Apr 18, 2008
    3
    0
    Hi Guyz

    i am looking for the simplest push button Circuit like the one used in water pumpers ..

    Push once to "trun on" push again to "Turn off"

    USING FLIP-FLOPS :confused:

    some one told me that i could Use Daul D FF

    Biraaa
     
  2. Caveman

    Active Member

    Apr 15, 2008
    471
    0
    Connect /Q back to D. Then use the switch to pulse the clock. Realistically, there needs to be more, but that is the topology.
     
  3. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    A pushbutton switch with a maintained contact (not momentary) can do the same thing without the flip-flop.
     
  4. Fishman_Tx

    New Member

    Sep 24, 2009
    3
    0
    Moved to new thread in the Project Forum

    Fish

    I ran across this thread and thought I'd hijack it as it's so old but is very relevant to what i'm doing.
    Using a simple Dual D FF as indicated, using a Schmitt trigger with the "momentary on" pushbutton w/debouncing; I want to drive 2 sections of a 4066 quad bilateral switch for the switching of line level signals. Tho /Q is tacked to D. Can /Q be tapped also to a switch actuator of the 4066? Or would it be better using Master/Slave configuration? The purpose is to switch from one active signal path to another (A/B switch). This will be multiplied into a digital signal switching matrix for my guitar rig. Is there a particular Dual D FF IC that would be recommended? Will the Schmitt give sufficient "edge" to toggle? I would prefer to have leading edge vs trailing for timing reasons.

    It's been a long time away from design work, so forgive my ignorance or "thickness".

    Thx!
     
    Last edited: Sep 24, 2009
  5. ELECTRONERD

    Senior Member

    May 26, 2009
    1,146
    16
    I need the exact same idea for this design I'm doing. I'm anxious to see what's the best way.
     
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