[sdiy] Spice models

[Nils Pipenbrinck]

On 01/18/2016 09:44 AM, Simon Brouwer wrote:
> Hi,
>  
> You can do this using the lossless transmission line element.
>  
> The limitation is that If you want to do a simulation where the PT2399
> clock frequency is not constant this will not work because the delay of
> the transmission line is not variable.

You can also model delays using the arbitrary behavioural voltage source.

Just plug it into your schematic, connect the negative side to ground,
then click on it and in the Value property add:

  V=delay(inputvoltage, delaytime).

E.g, if you have a net named delayInput and you want a 10ms delay it
would be:

  V=delay(V(delayInput), 10m)

Want to modulate the delay? Easy:

 V=delay(V(delayInput), 10m * (1 + sin(time)))

That will sweep the delay time between 0ms and 10ms.


Best,
  Nils