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