Version 4 SHEET 1 1872 1012 WIRE -224 -80 -224 -96 WIRE -112 -80 -112 -96 WIRE 0 -80 0 -96 WIRE 736 -48 720 -48 WIRE 848 -48 816 -48 WIRE 512 48 480 48 WIRE 592 48 576 48 WIRE 720 48 720 -48 WIRE 720 48 672 48 WIRE 736 48 720 48 WIRE 144 64 96 64 WIRE 272 64 224 64 WIRE 848 64 848 -48 WIRE 848 64 800 64 WIRE 912 64 848 64 WIRE 1056 64 976 64 WIRE 1184 64 1136 64 WIRE 736 80 720 80 WIRE 432 96 304 96 WIRE 720 128 720 80 WIRE 304 160 304 96 WIRE 336 160 304 160 WIRE -144 176 -160 176 WIRE -16 176 -64 176 WIRE 96 176 96 64 WIRE 96 176 64 176 WIRE 176 176 96 176 WIRE 432 176 432 96 WIRE 432 176 400 176 WIRE 480 176 480 48 WIRE 480 176 432 176 WIRE 272 192 272 64 WIRE 272 192 240 192 WIRE 336 192 272 192 WIRE 144 208 80 208 WIRE 176 208 144 208 WIRE 736 224 720 224 WIRE 832 224 816 224 WIRE 1008 240 992 240 WIRE 1120 240 1088 240 WIRE 80 272 80 208 WIRE 144 272 144 208 WIRE -96 288 -112 288 WIRE 16 288 -16 288 WIRE 480 320 480 176 WIRE 512 320 480 320 WIRE 592 320 576 320 WIRE 720 320 720 224 WIRE 720 320 672 320 WIRE 736 320 720 320 WIRE 832 336 832 224 WIRE 832 336 800 336 WIRE 896 336 832 336 WIRE 992 336 992 240 WIRE 992 336 976 336 WIRE 1008 336 992 336 WIRE 736 352 720 352 WIRE 1120 352 1120 240 WIRE 1120 352 1072 352 WIRE 1184 352 1120 352 WIRE 1296 352 1248 352 WIRE 1424 352 1376 352 WIRE 144 368 144 352 WIRE 1008 368 992 368 WIRE -208 384 -224 384 WIRE -112 384 -112 288 WIRE -112 384 -128 384 WIRE -96 384 -112 384 WIRE 720 384 720 352 WIRE 16 400 16 288 WIRE 16 400 -32 400 WIRE 80 400 80 352 WIRE 80 400 16 400 WIRE -96 416 -112 416 WIRE 992 416 992 368 WIRE 336 432 336 400 WIRE -112 464 -112 416 WIRE 464 528 448 528 WIRE 576 528 544 528 WIRE 752 544 720 544 WIRE 864 544 832 544 WIRE 224 560 176 560 WIRE 336 560 336 512 WIRE 336 560 304 560 WIRE 336 624 336 560 WIRE 352 624 336 624 WIRE 448 624 448 528 WIRE 448 624 432 624 WIRE 480 624 448 624 WIRE 1104 624 1056 624 WIRE 1216 624 1184 624 WIRE 576 640 576 528 WIRE 576 640 544 640 WIRE 608 640 576 640 WIRE 720 640 720 544 WIRE 720 640 688 640 WIRE 752 640 720 640 WIRE 480 656 448 656 WIRE 864 656 864 544 WIRE 864 656 816 656 WIRE 880 656 864 656 WIRE 1008 656 960 656 WIRE 752 672 736 672 WIRE 448 720 448 656 WIRE 736 736 736 672 WIRE 1008 736 1008 656 WIRE 1056 736 1056 624 WIRE 1056 736 1008 736 WIRE 1072 736 1056 736 WIRE 1216 752 1216 624 WIRE 1216 752 1136 752 WIRE 1248 752 1216 752 WIRE 1360 752 1248 752 WIRE 1072 768 1056 768 WIRE 1248 768 1248 752 WIRE 1056 800 1056 768 WIRE 896 848 864 848 WIRE 1008 848 1008 736 WIRE 1008 848 976 848 WIRE 752 864 736 864 WIRE 864 864 864 848 WIRE 864 864 832 864 WIRE 880 864 864 864 WIRE 1248 864 1248 848 WIRE 880 880 880 864 WIRE 880 992 880 960 FLAG -224 -80 0 FLAG -112 -80 0 FLAG -224 -176 Vcc FLAG -112 -176 -Vcc FLAG 208 224 -Vcc FLAG 208 160 Vcc FLAG 368 208 -Vcc FLAG 368 144 Vcc FLAG 144 368 0 FLAG -160 176 0 FLAG 720 128 0 FLAG 720 384 0 FLAG 768 32 Vcc FLAG 768 304 Vcc FLAG 768 368 -Vcc FLAG 768 96 -Vcc FLAG 992 416 0 FLAG 1040 320 Vcc FLAG 1040 384 -Vcc FLAG 0 -80 0 FLAG 0 -176 BIAS FLAG 1184 64 BIAS FLAG 1424 352 BIAS FLAG -112 464 0 FLAG -64 368 Vcc FLAG -64 432 -Vcc FLAG 512 608 Vcc FLAG 512 672 -Vcc FLAG 176 560 0 FLAG 448 720 0 FLAG 784 624 Vcc FLAG 784 688 -Vcc FLAG 736 736 0 FLAG 336 400 Vcc FLAG 1104 720 Vcc FLAG 1104 784 -Vcc FLAG 1056 800 0 FLAG 1248 864 0 FLAG 1360 752 SET_TEMP FLAG 880 992 0 FLAG 736 864 Vcc FLAG -224 384 SET_TEMP SYMBOL voltage -224 -192 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL voltage -112 -192 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value -12 SYMBOL diode 576 32 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value D_ideal SYMBOL diode 512 336 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D2 SYMATTR Value D_ideal SYMBOL res 240 48 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 67k SYMBOL res 80 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL res 128 256 R0 SYMATTR InstName R3 SYMATTR Value 67k SYMBOL res 96 368 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R4 SYMATTR Value 1k SYMBOL voltage -48 176 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName ROOM_TEMP SYMATTR Value 0.235V SYMBOL OpAmps\\LT1013 208 128 R0 SYMATTR InstName U1 SYMBOL OpAmps\\LT1013 368 112 R0 SYMATTR InstName U2 SYMBOL OpAmps\\LT1013 768 0 R0 SYMATTR InstName U3 SYMBOL OpAmps\\LT1013 768 272 R0 SYMATTR InstName U4 SYMBOL res 688 304 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 1k SYMBOL res 832 208 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 100k SYMBOL res 832 -64 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 100k SYMBOL res 688 32 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 1k SYMBOL res 1152 48 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName COOLER SYMATTR Value 1k SYMBOL res 1392 336 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName HEATER SYMATTR Value 1k SYMBOL diode 912 80 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D3 SYMATTR Value D_ideal SYMBOL diode 1184 368 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D4 SYMATTR Value D_ideal SYMBOL OpAmps\\LT1013 1040 288 R0 SYMATTR InstName U6 SYMBOL res 1104 224 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 1k SYMBOL res 992 320 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 1k SYMBOL voltage 0 -192 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value 5V SYMBOL OpAmps\\LT1013 -64 336 R0 SYMATTR InstName U5 SYMBOL res 0 272 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 1k SYMBOL res -112 368 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 1k SYMBOL OpAmps\\LT1013 512 576 R0 SYMATTR InstName U7 SYMBOL res 320 416 R0 SYMATTR InstName POT1 SYMATTR Value 99k SYMBOL res 320 544 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName POT2 SYMATTR Value 1k SYMBOL res 560 512 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R13 SYMATTR Value 1k SYMBOL res 704 624 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 3.3k SYMBOL res 848 528 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R15 SYMATTR Value 1k SYMBOL OpAmps\\LT1013 784 592 R0 SYMATTR InstName U8 SYMBOL res 448 608 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R16 SYMATTR Value 20k SYMBOL OpAmps\\LT1013 1104 688 R0 SYMATTR InstName U9 SYMBOL res 1232 752 R0 SYMATTR InstName R17 SYMATTR Value 1k SYMBOL res 864 864 R0 SYMATTR InstName R18 SYMATTR Value 1k SYMBOL res 848 848 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R19 SYMATTR Value 25k SYMBOL res 1200 608 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R20 SYMATTR Value 1k SYMBOL res 992 832 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R21 SYMATTR Value 1k SYMBOL res 976 640 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R22 SYMATTR Value 1k TEXT -240 672 Left 2 !.tran 10u TEXT -240 704 Left 2 !.model D_ideal D(Ron=0.1n Roff=1G Vfwd=0.7) TEXT 544 192 Left 2 ;Berkin An1�k