The regulator uses a transformer in series with {HEAD ~ an FET switch device} to cause {TAIL ~ the primary transformer current} to be switched ON and OFF in response to the power needs of an electrical load connected to the secondary circuit 
to cause
The regulator uses a transformer in series with { HEAD ~ an FET switch device } to cause { TAIL ~ the primary transformer current } to be switched ON and OFF in response to the power needs of an electrical load connected to the secondary circuit
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH