Version 4 SHEET 1 1416 680 WIRE 416 -64 352 -64 WIRE 416 -32 416 -64 WIRE -32 16 -112 16 WIRE 32 16 -32 16 WIRE 272 16 32 16 WIRE 400 16 272 16 WIRE 560 16 496 16 WIRE 656 16 560 16 WIRE 736 16 656 16 WIRE 880 16 816 16 WIRE 928 16 880 16 WIRE 976 16 928 16 WIRE 272 80 272 16 WIRE 112 96 32 96 WIRE 176 96 112 96 WIRE 240 96 176 96 WIRE 272 96 272 80 WIRE -112 112 -112 16 WIRE -32 112 -32 16 WIRE 352 112 352 -64 WIRE 352 112 304 112 WIRE 240 128 208 128 WIRE 112 144 112 96 WIRE 80 176 32 176 WIRE 208 176 208 128 WIRE 880 176 880 16 WIRE 880 176 208 176 WIRE -112 256 -112 192 WIRE -32 256 -32 176 WIRE -32 256 -112 256 WIRE 32 256 -32 256 WIRE 112 256 112 208 WIRE 112 256 32 256 WIRE 176 256 176 160 WIRE 176 256 112 256 WIRE 272 256 272 144 WIRE 272 256 176 256 WIRE 560 256 560 80 WIRE 560 256 272 256 WIRE 656 256 656 160 WIRE 656 256 560 256 WIRE 928 256 928 80 WIRE 928 256 656 256 WIRE 976 256 976 96 WIRE 976 256 928 256 FLAG -112 256 0 SYMBOL tl431 96 144 R0 SYMATTR InstName U1 SYMBOL res 16 160 R0 SYMATTR InstName R1 SYMATTR Value 5k SYMBOL res 16 80 R0 SYMATTR InstName R2 SYMATTR Value 5k SYMBOL cap -48 112 R0 SYMATTR InstName C1 SYMATTR Value 270µ SYMBOL voltage -112 96 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL res 16 0 R0 SYMATTR InstName R3 SYMATTR Value 2k SYMBOL cap 640 16 R0 SYMATTR InstName C2 SYMATTR Value 10n SYMBOL ind 720 32 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 200µ SYMBOL res 960 0 R0 SYMATTR InstName R4 SYMATTR Value 900 SYMBOL res 640 64 R0 SYMATTR InstName R5 SYMATTR Value 100 SYMBOL schottky 576 80 R180 WINDOW 0 24 64 Left 2 WINDOW 3 -60 3 Left 2 SYMATTR InstName D1 SYMATTR Value MBR20100CT SYMBOL cap 912 16 R0 SYMATTR InstName C3 SYMATTR Value 270µ SYMBOL cap 160 96 R0 SYMATTR InstName C4 SYMATTR Value 1µ SYMBOL OpAmps\\LT6203 272 112 R0 SYMATTR InstName U2 SYMBOL pmos 496 -32 R90 SYMATTR InstName M1 SYMATTR Value FDR840P TEXT -144 280 Left 2 !.tran 1s TEXT -128 400 Left 2 !.lib TL431.mod