On Sat, Oct 8, 2011 at 2:13 PM, Bob Blick wrote: > It will have a significant "pop" when you engage it. Alternatively you > could ramp up to 50% duty cycle. Is this specific to the single-rail, single-mosfet design? If so, I understand what is going on and how to address it. > In the beginning I'd suggest a pullup resistor rather than an inductor, > so you won't have any worries about what happens if it runs unloaded. That would be essentially an RC low-pass filter instead of an LC filter, ri= ght? -p. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .