Martin,
I¡¯m pretty sure the 22000 was from ray¡¯s equation for the cap value depending on the resistance of your coil(s) in his doc
C = 22000 / R
I think the 22000 value is a result of using 12v and trying to get the desired pulse time and value that Ray calculated. In some of his docs he went deeper into the electrical engineering of the circuit, others he was just here¡¯s how you make it.
Cheers,
Jeff
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On Jun 7, 2021, at 4:41 PM, Martin Watts <mjwatts1962@...> wrote:
Went back through Ray's notes when discussing using the BCD circuit to throw Peco points with my friend Dave Mc and got to wonder where this value of 22000 came from which led to the question which hopefully someone will know the answer to.
