In other words, {HEAD ~ an active control signal} 47 turns on an isolation device to allow a potential to be conducted from {TAIL ~ one location} to another location 
In other words , { HEAD ~ an active control signal } 47 turns on an isolation device to allow a potential to be conducted from { TAIL ~ one location } to another location
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH