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