Thanks :-) At 20.06 2011.12.26, you wrote: >Ringing at the end of energy transfer is normal and attempts to damp it ca= n >lead to substantial losses. > >In a two winding transformer you will have leakage inductance which adds t= o >the variety of signals that you can expect. > > > R --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .