Brent, I need to let the discharge flow through the sense resistor so I can=20 monitor the current to maintain the 1A hold phase. I'm not sure how to=20 maintain that 1A otherwise. Cheers, -Neil. On 11/26/2015 5:23 PM, Brent Brown wrote: > The flyback diode can only work (in the mode where it maintains=20 > inductor current and minimses energy loss during PWM off periods) if=20 > it is across the inductive load. Appreciate that it may be=20 > inconvenient to place it there, but that's where it must go.=20 --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .