A data processor is connected to the source, the power control apparatus and the temperature sensors and control the amount of {HEAD ~ heat} in {TAIL ~ accordance} with a desired heating pattern 
A data processor is connected to the source , the power control apparatus and the temperature sensors and control the amount of { HEAD ~ heat } in { TAIL ~ accordance } with a desired heating pattern
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH