SPST switch question

Discussion in 'The Projects Forum' started by Rednecklawrence, Jul 15, 2015.

  1. Rednecklawrence

    Thread Starter New Member

    Jul 15, 2015
    9
    1
    So im building an overly complex and inefficient wristwatch from 4026 and 4017 logic counters. What I need to know is how to use an spst button (4-pin) to have a constant low signal until I press the button, changing it to high.

    Thanks!
     
    ErnieM likes this.
  2. #12

    Expert

    Nov 30, 2010
    16,343
    6,827
    Connect the switch on the voltage side of the circuit and connect the input (of whatever circuit) to ground through a resistor. The input will be at ground potential until you press the button.

    I have a deja-vu feeling about this one. I answered what seems to be a very simple question and the conversation went on for days.
     
  3. Rednecklawrence

    Thread Starter New Member

    Jul 15, 2015
    9
    1
    Im probably gonna sound stupid in you opinion, but what?!?! Im not good at this stuff. I just need a constant low till I press the button, then goes high, then low on release (Low being grounded.)
     
  4. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
    2,812
    834
    Like this...
    SPST_Pushbutton.png
     
    ErnieM likes this.
  5. gbegks

    New Member

    Jul 15, 2015
    4
    1
  6. Rednecklawrence

    Thread Starter New Member

    Jul 15, 2015
    9
    1
    Thanks! always have been a more visual learner...
     
Loading...