{TAIL ~ Pulses} of electric current applied to the heating elements are modulated with pulse width modulation to adjust the temperature within {HEAD ~ the chamber} in response to signals emitted by a temperature sensor located within the chamber 
{ TAIL ~ Pulses } of electric current applied to the heating elements are modulated with pulse width modulation to adjust the temperature within { HEAD ~ the chamber } in response to signals emitted by a temperature sensor located within the chamber
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH