Using logic inverters for a clock pulse

Discussion in 'General Electronics Chat' started by zane9000, Oct 24, 2007.

  1. zane9000

    Thread Starter Member

    Mar 16, 2007
    19
    0
    I was wondering what the forumula is for finding the frequency of a clock pulse generated by two inverters in serries. Is it just about what cap and resistor you use, or does the inverter play any roll in determining switching speed? I have always used the 555 timer, but now that I am learning more about digital logic, it seems like inverters are a much more simple option.
     
  2. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    You would add the propagation delay to the TC from your resistor and cap. This would be negligible at lower frequencies.
     
  3. zane9000

    Thread Starter Member

    Mar 16, 2007
    19
    0
    So the time constant is also the time between pulses?
     
  4. zane9000

    Thread Starter Member

    Mar 16, 2007
    19
    0
    nevermind, I found the info I needed
     
  5. Eddy Kurent

    Member

    Apr 9, 2007
    18
    0
    The inverter used has much to do with the success of an oscillator.

    The 74HC14 and CD4069 are considered the two better chips to use for making bicore or multicore timers.
     
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