My apologies, there may have been security setting in its properties, but I've unblocked that now so we'll try again.
DaveP
This does not seem to be a problem for microphone transformers which may have only microvolts at times.I am not the transformer guy so forgive me if this is obvious but in the extreme at very low levels it is going to take some finite amount of energy to get the magnetic domains moving. Is this completely qualified by frequency response?
DaveP