{HEAD ~ An energy conserving drive circuit} is provided for {TAIL ~ switched mode power converters} having a transformer with primary current controlled by a main power switch whose conduction is in turn controlled by a pulse width modulator 
{ HEAD ~ An energy conserving drive circuit } is provided for { TAIL ~ switched mode power converters } having a transformer with primary current controlled by a main power switch whose conduction is in turn controlled by a pulse width modulator
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