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