Version 4 SHEET 1 1028 1000 WIRE -928 -336 -1040 -336 WIRE -784 -336 -928 -336 WIRE -448 -336 -784 -336 WIRE -48 -336 -448 -336 WIRE 400 -336 -48 -336 WIRE -1040 -320 -1040 -336 WIRE -400 -240 -560 -240 WIRE -1040 -224 -1040 -240 WIRE -784 -208 -784 -336 WIRE -448 -192 -448 -336 WIRE -368 -80 -368 -96 WIRE -784 -64 -784 -128 WIRE -560 -64 -560 -240 WIRE -560 -64 -784 -64 WIRE -448 -64 -448 -112 WIRE -400 -64 -448 -64 WIRE -784 -48 -784 -64 WIRE -320 -48 -320 -240 WIRE -320 -48 -336 -48 WIRE -272 -48 -320 -48 WIRE -256 -48 -272 -48 WIRE -128 -48 -176 -48 WIRE -560 -32 -560 -64 WIRE -400 -32 -560 -32 WIRE -128 -32 -128 -48 WIRE -368 0 -368 -16 WIRE -336 0 -368 0 WIRE -704 32 -784 32 WIRE -448 32 -448 -64 WIRE -336 32 -336 0 WIRE 400 64 400 -336 WIRE -704 96 -704 32 WIRE -48 176 -48 -336 WIRE 400 176 400 144 WIRE -448 256 -448 112 WIRE 416 256 400 240 WIRE -272 304 -272 -48 WIRE -112 304 -272 304 WIRE -48 304 -48 256 WIRE 176 304 -48 304 WIRE 352 304 256 304 WIRE -112 352 -256 352 WIRE -48 352 -48 304 WIRE -928 368 -928 -336 WIRE -768 368 -928 368 WIRE -464 368 -768 368 WIRE 416 416 416 352 WIRE -384 464 -544 464 WIRE -768 496 -768 368 WIRE -464 512 -464 368 WIRE -432 592 -464 592 WIRE -352 624 -352 608 WIRE -768 640 -768 576 WIRE -544 640 -544 464 WIRE -544 640 -768 640 WIRE -384 640 -544 640 WIRE -768 656 -768 640 WIRE -304 656 -304 464 WIRE -304 656 -320 656 WIRE -256 656 -256 352 WIRE -256 656 -304 656 WIRE -240 656 -256 656 WIRE -112 656 -160 656 WIRE -432 672 -432 592 WIRE -384 672 -432 672 WIRE -112 672 -112 656 WIRE -352 704 -352 688 WIRE -320 704 -352 704 WIRE -688 736 -768 736 WIRE -432 736 -432 672 WIRE -320 736 -320 704 WIRE -688 800 -688 736 WIRE -432 848 -432 816 FLAG -352 608 +V FLAG -320 736 0 FLAG -432 848 0 FLAG -688 800 0 FLAG -112 736 0 FLAG -1040 -224 0 FLAG -368 -96 +V FLAG -1040 -336 +V FLAG -336 32 0 FLAG -448 256 0 FLAG -704 96 0 FLAG -128 32 0 FLAG 416 416 0 SYMBOL opamps\\LT1013 -352 592 R0 SYMATTR InstName U1 SYMBOL res -752 592 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R2 SYMATTR Value 4.7k SYMBOL res -448 608 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL res -416 832 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R5 SYMATTR Value 4.7k SYMBOL voltage -768 640 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 2.00 SYMBOL res -288 448 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R7 SYMATTR Value 200k SYMBOL LED -128 672 R0 SYMATTR InstName D1 SYMBOL res -144 640 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R8 SYMATTR Value 220 SYMBOL voltage -1040 -336 R0 WINDOW 39 24 125 Left 0 WINDOW 123 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value 12 SYMBOL opamps\\LT1013 -368 -112 R0 SYMATTR InstName U2 SYMBOL res -768 -112 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R1 SYMATTR Value 4.7k SYMBOL res -432 -96 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL res -432 128 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R6 SYMATTR Value 4.7k SYMBOL voltage -784 -64 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V4 SYMATTR Value 4.00 SYMBOL res -304 -256 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R9 SYMATTR Value 200k SYMBOL LED -144 -32 R0 SYMATTR InstName D2 SYMBOL res -160 -64 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R10 SYMATTR Value 220 SYMBOL npn 352 256 R0 SYMATTR InstName Q1 SYMBOL LED 384 176 R0 SYMATTR InstName D3 SYMBOL res 384 48 R0 SYMATTR InstName R11 SYMATTR Value 400 SYMBOL res 272 288 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R12 SYMATTR Value 200 SYMBOL diode -48 288 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D4 SYMBOL diode -48 336 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D5 SYMBOL res -64 160 R0 SYMATTR InstName R13 SYMATTR Value 5k TEXT -320 64 Left 0 !;tran 1m TEXT -1072 984 Left 0 !.tran 50 TEXT -864 192 Left 0 ;V2 and V3 are LM335 temp ic's TEXT 64 64 Left 0 ;12volt relay 400ohm coil or ??