One problem with any scheme which does not have the keep alive capacitor is 60hz flicker. The random flicker caused by uneven conduction to the pickup rollers does not bother me. However 60hz flicker drives me nuts and makes my eyes ache. Strange thing about 60hz flicker many people cannot even see it but if you can it is very hard on the eyes. If you can tolerate the 60hz then Chucks scheme is great. Though there is an even simpler scheme just string together 10-12 leds they will work fine no resistor no diode. Just add or subtract till you have the brightness you want. Then watch the 60hz till your eyeballs explode and your head cracks. Attached photo 9 led, transformer set to 18v, no resistor no diode. If you run DCS you better add a 22uh choke to the string of leds, Chucks scheme also. j
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