Version 4 SHEET 1 1400 680 WIRE 400 -48 272 -48 WIRE 496 -48 400 -48 WIRE 656 -48 496 -48 WIRE 992 -48 656 -48 WIRE 992 0 992 -48 WIRE 400 16 400 -48 WIRE 912 16 896 16 WIRE 960 16 912 16 WIRE 1072 32 1024 32 WIRE 1136 32 1072 32 WIRE 1152 32 1136 32 WIRE 768 48 464 48 WIRE 960 48 768 48 WIRE 272 112 272 -48 WIRE 656 112 656 -48 WIRE 912 144 912 16 WIRE 560 160 528 160 WIRE 592 160 560 160 WIRE 848 160 848 64 WIRE 464 176 464 48 WIRE 496 176 496 -48 WIRE 528 176 528 160 WIRE 560 176 560 160 WIRE 656 240 656 192 WIRE 720 240 656 240 WIRE 800 240 720 240 WIRE 912 256 912 224 WIRE 1072 256 1072 32 WIRE 1072 256 912 256 WIRE 448 272 336 272 WIRE 624 304 576 304 WIRE 720 304 720 240 WIRE 800 304 800 240 WIRE 656 336 656 320 WIRE 688 336 656 336 WIRE 848 352 848 160 WIRE 400 368 400 96 WIRE 624 368 624 304 WIRE 624 368 400 368 WIRE 272 432 272 192 WIRE 336 432 336 272 WIRE 336 432 272 432 WIRE 592 432 592 160 WIRE 592 432 336 432 WIRE 656 432 592 432 WIRE 720 432 720 368 WIRE 720 432 656 432 WIRE 800 432 800 384 WIRE 800 432 720 432 WIRE 992 432 992 64 WIRE 992 432 800 432 FLAG 336 432 0 FLAG 1136 32 -AMPS FLAG 768 48 LEMO FLAG 848 160 TL431O SYMBOL voltage 272 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 10 SYMBOL res 384 0 R0 SYMATTR InstName R4 SYMATTR Value 3 SYMBOL LEMHX50X4 512 256 R0 SYMATTR InstName U1 SYMBOL res 896 128 R0 WINDOW 0 -268 -471 Invisible 2 WINDOW 3 31 84 Left 2 SYMATTR InstName R1 SYMATTR Value 100K SYMBOL TLC2272 992 -32 R0 SYMATTR InstName U3 SYMBOL tl431a 704 304 R0 WINDOW 0 63 110 Left 2 WINDOW 38 -24 62 Center 2 SYMATTR InstName U6 SYMBOL res 640 96 R0 SYMATTR InstName R7 SYMATTR Value 5K SYMBOL Pot&Sw\\potentiometer_jeffrey 880 320 M0 WINDOW 123 42 96 Right 2 WINDOW 0 33 -1 VLeft 2 WINDOW 3 27 52 Right 2 SYMATTR Value2 Set=9.99 SYMATTR InstName U7 SYMATTR Value Rt=10K SYMBOL res 640 336 R0 SYMATTR InstName R2 SYMATTR Value 10K SYMBOL res 640 224 R0 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL Pot&Sw\\potentiometer_jeffrey 880 96 M270 WINDOW 123 91 93 VRight 2 WINDOW 0 33 -1 VLeft 2 WINDOW 3 119 94 VRight 2 SYMATTR Value2 Set=9.99 SYMATTR InstName U2 SYMATTR Value Rt=1K TEXT 240 296 Left 2 !.tran 1