When {HEAD ~ the load} enters {TAIL ~ standby mode} from the active mode, the microprocessor directs the standby controller to prevent the voltage output controller from outputting direct current voltage to the load and the microprocessor 
enters
When { HEAD ~ the load } enters { TAIL ~ standby mode } from the active mode , the microprocessor directs the standby controller to prevent the voltage output controller from outputting direct current voltage to the load and the microprocessor
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL 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