A controller regulates the output power by controlling the switching frequency based on {HEAD ~ a feedback signal} that is coupled to {TAIL ~ the load} 
is coupled to
A controller regulates the output power by controlling the switching frequency based on { HEAD ~ a feedback signal } that is coupled to { TAIL ~ the load }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL