a booster inductance connected to {HEAD ~ the electronic switch}, the battery and {TAIL ~ the power output terminal} 
a booster inductance connected to { HEAD ~ the electronic switch } , the battery and { TAIL ~ the power output terminal }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL