{HEAD ~ A circuit} for heating a heating element to a desired temperature and generating {TAIL ~ an output} from a power source, said power source having a periodic varying voltage, said circuit comprising: 
{ HEAD ~ A circuit } for heating a heating element to a desired temperature and generating { TAIL ~ an output } from a power source , said power source having a periodic varying voltage , said circuit comprising :
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH