Further, according to the present aspect, since the forward voltage drop comparable with the forward voltage drop caused by the first diode can be generated between the first power supply and the first device by the third diode, {HEAD ~ the first predetermined voltage} is properly supplied to {TAIL ~ the first device} 
Further , according to the present aspect , since the forward voltage drop comparable with the forward voltage drop caused by the first diode can be generated between the first power supply and the first device by the third diode , { HEAD ~ the first predetermined voltage } is properly supplied to { TAIL ~ the first device }
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL