> Both should be resonant and at the same frequency. They do not need to > be mechanically identical. > Your system wants an across air gap transfer so facing flat coils is=20 > better Only a little bigger than I want but a very demonstrative demonstration http://www.youtube.com/watch?v=3D2ODW-ntPHSU=20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .