The input end 411 of the heating mechanism 41 is connected with a power source end 421 and {HEAD ~ the collector} of {TAIL ~ the transistor} 422 
of
The input end 411 of the heating mechanism 41 is connected with a power source end 421 and { HEAD ~ the collector } of { TAIL ~ the transistor } 422
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH