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