{HEAD ~ The current detection circuit} 306 is preferably a current meter in series with one of the electrodes, however, {TAIL ~ any type} of current detection device or circuit may be used and is contemplated as falling within the scope of the present invention 
{ HEAD ~ The current detection circuit } 306 is preferably a current meter in series with one of the electrodes , however , { TAIL ~ any type } of current detection device or circuit may be used and is contemplated as falling within the scope of the present invention
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH