Version 4 SHEET 1 1336 680 WIRE 1040 -688 480 -688 WIRE 16 -592 -64 -592 WIRE 320 -592 16 -592 WIRE 448 -592 384 -592 WIRE 544 -592 448 -592 WIRE 640 -592 544 -592 WIRE 720 -592 640 -592 WIRE 832 -592 816 -592 WIRE 1088 -592 832 -592 WIRE 320 -560 320 -592 WIRE 384 -560 384 -592 WIRE 448 -560 448 -592 WIRE 640 -560 640 -592 WIRE 1040 -560 1040 -688 WIRE 1040 -560 1008 -560 WIRE 1088 -528 1088 -592 WIRE 384 -448 384 -480 WIRE 480 -448 480 -688 WIRE 480 -448 384 -448 WIRE 640 -448 640 -480 WIRE 640 -448 608 -448 WIRE 736 -448 736 -544 WIRE 736 -448 640 -448 WIRE 1008 -448 1008 -560 WIRE 1040 -448 1008 -448 WIRE 320 -400 320 -480 WIRE 912 -384 912 -432 WIRE 1088 -384 1088 -432 WIRE 1088 -384 912 -384 WIRE 1104 -384 1088 -384 WIRE 1216 -384 1184 -384 WIRE 480 -368 480 -448 WIRE 560 -368 480 -368 WIRE 1216 -368 1216 -384 WIRE 1264 -368 1216 -368 WIRE 112 -352 48 -352 WIRE 224 -352 192 -352 WIRE 256 -352 224 -352 WIRE 640 -304 640 -448 WIRE 640 -304 608 -304 WIRE 1088 -304 912 -304 WIRE 1216 -304 1088 -304 WIRE 1264 -304 1216 -304 WIRE 912 -256 912 -304 WIRE 1088 -256 1088 -304 WIRE 864 -240 864 -512 WIRE 16 -224 16 -592 WIRE 224 -224 16 -224 WIRE 448 -224 448 -480 WIRE 560 -224 448 -224 WIRE 448 -192 448 -224 WIRE 448 -192 320 -192 WIRE 1008 -176 1008 -448 WIRE 1040 -176 1008 -176 WIRE 48 -144 48 -352 WIRE 112 -144 48 -144 WIRE 224 -144 192 -144 WIRE 256 -144 224 -144 WIRE 448 -144 448 -192 WIRE 864 -144 864 -240 WIRE 864 -144 448 -144 WIRE 832 -112 832 -592 WIRE 912 -112 912 -160 WIRE 912 -112 832 -112 FLAG 48 -64 0 FLAG -64 -512 0 FLAG 320 -96 0 FLAG 320 -304 0 FLAG 384 -352 0 FLAG 608 -352 0 FLAG 224 -272 0 FLAG 608 -208 0 FLAG 912 -528 0 FLAG 1088 -160 0 FLAG 544 -512 0 SYMBOL voltage -64 -608 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 3.3 SYMBOL npn 256 -192 R0 SYMATTR InstName Q1 SYMBOL npn 256 -400 R0 SYMATTR InstName Q2 SYMBOL npn 320 -448 R0 SYMATTR InstName Q3 SYMBOL res 208 -160 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R1 SYMATTR Value 1K SYMBOL res 368 -576 R0 SYMATTR InstName R4 SYMATTR Value 10K SYMBOL res 208 -368 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R2 SYMATTR Value 1K SYMBOL res 432 -576 R0 SYMATTR InstName R5 SYMATTR Value 10K SYMBOL res 624 -576 R0 SYMATTR InstName R6 SYMATTR Value 10K SYMBOL res 208 -240 R0 SYMATTR InstName R7 SYMATTR Value 5.6K SYMBOL res 208 -368 R0 SYMATTR InstName R8 SYMATTR Value 1K SYMBOL nmos 560 -448 R0 SYMATTR InstName M1 SYMATTR Value IRF7303 SYMBOL nmos 560 -304 R0 SYMATTR InstName M2 SYMATTR Value IRF7303 SYMBOL pmos 816 -544 M270 SYMATTR InstName M3 SYMATTR Value IRF7343P SYMBOL nmos 1040 -256 R0 SYMATTR InstName M6 SYMATTR Value IRF7343N SYMBOL nmos 864 -432 M180 SYMATTR InstName M7 SYMATTR Value IRF7343N SYMBOL voltage 544 -608 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value 12 SYMBOL nmos 1040 -528 R0 SYMATTR InstName M5 SYMATTR Value IRF7343N SYMBOL nmos 864 -160 M180 SYMATTR InstName M4 SYMATTR Value IRF7343N SYMBOL diode 1280 -304 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D1 SYMBOL diode 1200 -368 R0 SYMATTR InstName D2 SYMBOL res 1200 -400 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R9 SYMATTR Value 10 SYMBOL res 304 -576 R0 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL voltage 48 -160 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value PULSE(0 3.3 0.01 2n 2n 0.5 1 0) TEXT -112 -80 Left 0 !.tran 0 3 0 1