The function of buck regulator 32 assures that {HEAD ~ Vc} is at {TAIL ~ the optimum level} for demagnetization 
The function of buck regulator 32 assures that { HEAD ~ Vc } is at { TAIL ~ the optimum level } for demagnetization
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH