gunrunnerjohn posted:The PWM controllers are a good solution, but you'll need lots of filtered DC power to use them. A good choice is an old PC power supply, you get tons of cheap DC power from them. Here's a nice tutorial on how to use a PC supply.
You're suggesting to feed the PWMs with an old PC regulated power supply which provides filtered DC ? Since he has 3 trolleys runs, he could trim each with separate PWM's mounted in his project box. I use the 12 VDC supply from Micro Mark which provides 33 amps. It powers DC to my entire layout, mostly for LEDs and custom electronics.
