{HEAD ~ The control electronics} further contain {TAIL ~ means} for switching the electronic power switch off during at least parts of at least individual pulses 
{ HEAD ~ The control electronics } further contain { TAIL ~ means } for switching the electronic power switch off during at least parts of at least individual pulses
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH