The duty cycle of this pulse width modulated signal is increased linearly from a low duty cycle such as 20% to a high duty cycle such as 100% over a time interval which is adjusted to be {TAIL ~ at least several times the length} of the average transition period for closure of the contacts in {HEAD ~ the contactor} 
The duty cycle of this pulse width modulated signal is increased linearly from a low duty cycle such as 20 % to a high duty cycle such as 100 % over a time interval which is adjusted to be { TAIL ~ at least several times the length } of the average transition period for closure of the contacts in { HEAD ~ the contactor }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD