{TAIL ~ The self oscillating drive arrangement} for {HEAD ~ the power switch} has an inherent narrow bandwidth that is tuneable over a wide frequency range 
{ TAIL ~ The self oscillating drive arrangement } for { HEAD ~ the power switch } has an inherent narrow bandwidth that is tuneable over a wide frequency range
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH