a power supply controller connected to {TAIL ~ the power output terminal} of {HEAD ~ the booster} and having 
a power supply controller connected to { TAIL ~ the power output terminal } of { HEAD ~ the booster } and having
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH