Hi all, This might be a stupid question, but what characteristics in relation to a = any audio transformer does a load need to have to maximise the current thro= ugh the primary? This is for testing a circuit I already have that drives a= transformer with a pulse to get a higher voltage output. Not having realms= of transformer vector theory, and in experiment a short on the output does= not give the highest current, and variable resistors give current but not = massive increases. Standing by for RTFM... Wayne --=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 .