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