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