The electrical contactor 8, wherein said controller generates {HEAD ~ said pulse width modulated signal} at {TAIL ~ a frequency} of approximately 2 KHz 
The electrical contactor 8 , wherein said controller generates { HEAD ~ said pulse width modulated signal } at { TAIL ~ a frequency } of approximately 2 KHz
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH