{HEAD ~ The invention} more particularly relates to an energy conserving drive circuit for {TAIL ~ the pulse width modulator} and the main power switch 
{ HEAD ~ The invention } more particularly relates to an energy conserving drive circuit for { TAIL ~ the pulse width modulator } and the main power switch
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH