@Tom Tee posted:There is a book called "Basic electricity and electronics for model railroaders" by Kalmbach Books that had a section on diode control for twin-coil or motor driven turnouts that explains how to set up a diode matrix.
If you are familiar with diodes you could just imagine how to set one up w/o the book.
Well I just had to ask! Sounds like it will only work with DC. And I can envision how with one button you could reset all turnouts to default position after a running session. Something I always try to remember to do, but it doesn't always happen! That would be really handy after the grandkids have been by for a visit! 
I use a custom built 16VDC power supply for switches and it has a big old 80,000 uf capacitor for filtering. It just may have enough oomph to power say half a dozen switches at once that may be out of default position. May have to experiment a bit. There would be no load from switches that are already in the right position.
That Kalmbach book sounds handy; don't have that one. How old of a publication is it?
Rod
