gunrunnerjohn posted:GGG posted:The part numbers for original PS-1 are not the same as PS-2.
I was sure that had to be the case. I didn't realize that now MTH just used the lower impedance ones. I suppose that works, I don't know how robust the circuit that fires them on PS/1 is.
TIP31. The same transistor that runs the Lionel Starter set DC motors on the old 103E unit. Robust enough, especially with that huge 1000uF capacitor they use. G