Well, 'better' to me means something that is simple to build, solves several problems simultaneously and cannot be misadjusted. The attached dump1.pdf and dump2.pdf circuits dump returned energy and secondarily, rapidly discharge the power supply when AC is switched off. No 'bleed resistor' is needed; the supply discharges in less than a second. I threw in e-stop dump.pdf just for the heck of it.
Mariss |