Originally Posted by gunrunnerjohn:
Many of the chopped waveform transformers and controllers cause issues with some PS/1 stuff, and even some PS/2 stuff.
One trick that has worked for a number of people is a 50V 47uf non-polarized capacitor across the track feed.
John is right on point. The capacitor smooths out some of the "chop" in the wave of electronic phase-limiting transformers. Depending on the transformer and the PS-1/QSI vintage, you may need up to a 200uF non-polarized to smooth out the wave.
