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