> Peak currents can be as high as 2100A. > > 2uH of inductance Note that this means the core needs to store 4.4J. You can play all the games you want with turns, wire thickness, core material, etc, but there is no way to escape this basic physics. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist