Counter in NgSpice

Fahim
2012-12-18
2013-06-12
  • Fahim

    Fahim - 2012-12-18

    Hi,

    I am looking for up/down counter in NgSpice. Is there any model which can be used for counter?

    Or Any model which I can use to design up/down counter.

    Regards,
    Fahim

     
  • marcel hendrix

    marcel hendrix - 2012-12-18

    Simplest is a behavioral subcircuit using an ideal integrator (current source feeding a capacitor), driven by dirac pulses (differentiated count pulses). Invert the polarity of the pulses to count down.

    -marcel

     

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