With this method {HEAD ~ no attempt} is made to make the size of {TAIL ~ the return stroke} independent of ambient influences instead, a change in the return stroke is compensated for by a suitable control voltage 
With this method { HEAD ~ no attempt } is made to make the size of { TAIL ~ the return stroke } independent of ambient influences instead , a change in the return stroke is compensated for by a suitable control voltage
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL 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