Originally Posted by Iceracer
A decent DC supply needs is regulated, not just rectified and filtered. Otherwise, the voltage will jump all around with varying loads.
Sorry tim, its true. A full wave bridge rectifier to An RCR, LCR, LCL filter will yield a relatively flat DC voltage, but that voltage is entirely determined by the load presented to the ps circuit.
Switch mode power supplies are cost effective, compact and suitable for the relatively modest demands of RC racing. Although we have robust current requirements, ripple isn't a big deal.