maximum of 5% loss is specified for a 2KW output. So the input would be In= putPower*(.95 ) =3D 2KW or InputPower =3D 2105 Watts and the power loss i= s 105 watts. If we adopt the gizmag article=92s suggested size of 655 cubi= c cm =85. we have to dissipate 105W out a cube that is 8.7 cm on a side. O= r we could make it more of a brick =85. maybe=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 .