This self oscillating arrangement is also simpler in construction and has fewer component parts than {HEAD ~ an equivalent independent drive circuit} for {TAIL ~ the power switch} bandwidth 
for
This self oscillating arrangement is also simpler in construction and has fewer component parts than { HEAD ~ an equivalent independent drive circuit } for { TAIL ~ the power switch } bandwidth
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH