I am taking a guess at this latest abbreviation, it took me months to learn that ESR meant equivalent series resistance in a capacitor. Does this mean the ohmic resistance eqivalent to its capacitive reactance? Or does it represent the resistance encountered as leakage current? Sure wish the posters could at least say what the letters mean once in a while. HDN Binary Resonant System http://www.insidetheweb-dot-com/mbs.cgi/mb124201