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