In accordance with a further feature of the present invention, the pulse generator contains {HEAD ~ an optical coupler} that electrically isolates {TAIL ~ the electrical apparatus} from the power system 
electrically isolates
In accordance with a further feature of the present invention , the pulse generator contains { HEAD ~ an optical coupler } that electrically isolates { TAIL ~ the electrical apparatus } from the power system
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH