Yep, traditional along with caps of no more than 2-4 mfd and 2 or 3 sections strung together to get the ripple down. Saved a little bleeder current, though...... Dennis D. W7QHO Glendale, CA On Oct 8, 2009, at 5:16 PM, Carl wrote: > Its a traditional lower cost, lower weight way to do it in a > variable current circuit.