As compared with FIG 2E, {TAIL ~ the conductivity types} of n type and {HEAD ~ p type} and the electric polarities of the anode 4 and cathode 5 are interchanged in FIG 3 
As compared with FIG 2E , { TAIL ~ the conductivity types } of n type and { HEAD ~ p type } and the electric polarities of the anode 4 and cathode 5 are interchanged in FIG 3
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH