Version 4 SHEET 1 2676 1380 WIRE 672 -448 592 -448 WIRE 160 -400 160 -448 WIRE 160 -400 96 -400 WIRE 352 -400 160 -400 WIRE 480 -400 432 -400 WIRE 592 -400 592 -448 WIRE 592 -400 480 -400 WIRE 624 -400 592 -400 WIRE 816 -400 704 -400 WIRE 832 -400 816 -400 WIRE 960 -400 912 -400 WIRE 480 -304 480 -400 WIRE 624 -304 480 -304 WIRE 784 -304 624 -304 WIRE 816 -304 816 -400 WIRE 96 -208 96 -400 WIRE 400 -208 96 -208 WIRE 496 -208 480 -208 WIRE 496 -192 496 -208 WIRE 544 -144 544 -160 WIRE 608 -144 544 -144 WIRE 736 -144 608 -144 WIRE 848 -144 736 -144 WIRE 1040 -96 848 -96 WIRE 1120 -96 1040 -96 WIRE 1264 -96 1120 -96 WIRE 496 -80 496 -112 WIRE 496 -80 464 -80 WIRE 1472 -80 1328 -80 WIRE 1264 -64 1232 -64 WIRE 848 -48 848 -96 WIRE 928 -48 928 -144 WIRE 848 16 752 16 WIRE 928 16 928 -48 WIRE 272 48 176 48 WIRE 448 48 272 48 WIRE 176 64 176 48 WIRE 816 80 816 -304 WIRE 848 80 816 80 WIRE 928 80 928 16 WIRE 448 96 448 48 WIRE 528 96 528 80 WIRE 528 96 448 96 WIRE 752 96 752 16 WIRE 752 96 528 96 WIRE 928 96 928 80 WIRE 960 96 928 96 WIRE 656 112 656 32 WIRE 1040 112 1040 -96 WIRE 1040 112 1024 112 WIRE 960 128 704 128 WIRE 704 160 704 128 WIRE 1040 160 832 160 WIRE 1120 160 1040 160 WIRE 1264 160 1120 160 WIRE 96 176 96 -208 WIRE 1488 176 1328 176 WIRE 176 192 176 128 WIRE 352 192 176 192 WIRE 1232 192 1232 -64 WIRE 1264 192 1232 192 WIRE 448 208 448 96 WIRE 448 208 416 208 WIRE 832 208 832 160 WIRE 848 208 832 208 WIRE 320 224 144 224 WIRE 352 224 320 224 WIRE 752 256 752 96 WIRE 848 256 752 256 WIRE 928 256 928 208 WIRE 960 256 928 256 WIRE 1040 272 1040 160 WIRE 1040 272 1024 272 WIRE 96 288 96 256 WIRE 704 288 704 160 WIRE 960 288 704 288 WIRE 656 304 656 192 WIRE 320 352 320 224 WIRE 352 352 320 352 WIRE 448 368 416 368 WIRE 784 368 784 -304 WIRE 832 368 784 368 WIRE 928 368 928 256 WIRE 928 368 912 368 WIRE 1232 368 1232 192 WIRE 1328 368 1232 368 WIRE 272 384 272 128 WIRE 352 384 272 384 WIRE 176 400 176 192 WIRE 272 400 272 384 WIRE 608 448 608 -144 WIRE 832 448 608 448 WIRE 928 448 928 368 WIRE 928 448 912 448 WIRE 1328 448 1232 448 WIRE 176 512 176 480 WIRE 272 512 272 480 WIRE 272 512 176 512 WIRE 448 512 448 368 WIRE 448 512 272 512 WIRE 1104 640 1008 640 WIRE 1184 640 1104 640 WIRE 800 720 736 720 WIRE 896 736 848 736 WIRE 1008 736 1008 720 WIRE 1008 736 976 736 WIRE 1088 736 1008 736 WIRE 1184 752 1184 640 WIRE 1184 752 1152 752 WIRE 1232 752 1232 448 WIRE 1232 752 1184 752 WIRE 848 768 848 736 WIRE 896 768 864 768 WIRE 1024 768 976 768 WIRE 1088 768 1024 768 WIRE 256 800 80 800 WIRE 336 800 336 784 WIRE 336 800 320 800 WIRE 368 800 336 800 WIRE 624 800 592 800 WIRE 80 816 80 800 WIRE 624 816 624 800 WIRE 192 864 128 864 WIRE 368 864 192 864 WIRE 672 864 592 864 WIRE 1024 864 1024 768 WIRE 128 880 128 864 WIRE 864 912 864 768 WIRE 224 928 192 928 WIRE 272 928 224 928 WIRE 368 928 272 928 WIRE 608 928 592 928 WIRE 736 928 736 720 WIRE 736 928 608 928 WIRE 272 944 272 928 WIRE 192 960 192 928 WIRE 368 992 336 992 WIRE 608 992 608 928 WIRE 608 992 592 992 WIRE 336 1040 336 992 WIRE 672 1040 672 864 WIRE 672 1040 336 1040 WIRE 704 1040 672 1040 WIRE 800 1040 784 1040 WIRE 864 1040 864 912 WIRE 864 1040 800 1040 WIRE 1024 1040 1024 944 WIRE 1120 1040 1120 784 WIRE 1120 1040 1024 1040 WIRE 336 1056 336 1040 WIRE 272 1072 272 1024 WIRE 224 1200 224 1120 WIRE 272 1200 272 1152 WIRE 336 1200 336 1136 WIRE 608 1200 608 992 WIRE 1120 1360 1120 1040 FLAG 800 800 0 FLAG 112 640 PWR FLAG 1120 720 PWR FLAG 624 816 0 FLAG 128 944 0 FLAG 272 1200 0 FLAG 192 1024 0 FLAG 336 1200 0 FLAG 80 896 0 FLAG 336 784 +in FLAG 192 864 c1ext FLAG 224 928 c2ext FLAG 800 1104 0 FLAG 1120 1360 0 FLAG 112 720 0 FLAG 864 912 2907out FLAG 1104 640 amp-out FLAG 224 1200 0 FLAG 384 176 PWR FLAG 384 336 PWR FLAG 160 -448 12V IOPIN 160 -448 In FLAG 384 240 0 FLAG 384 400 0 FLAG 96 288 0 FLAG 992 144 0 FLAG 992 80 PWR FLAG 992 304 0 FLAG 992 240 PWR FLAG 656 32 PWR FLAG 656 304 0 FLAG 960 -400 0 FLAG 384 -80 0 FLAG 624 -304 sep+ FLAG 816 -304 sep- FLAG 736 -144 spd FLAG 528 80 osc FLAG 1120 -96 upper FLAG 1120 160 lower FLAG -48 624 12V IOPIN -48 624 Out FLAG -48 704 0 FLAG 608 1200 12V IOPIN 608 1200 In FLAG 1296 -112 PWR FLAG 1296 144 PWR FLAG 1296 -48 0 FLAG 1296 208 0 SYMBOL voltage 112 624 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 14.4 SYMBOL Opamps\\LM324 1120 752 R0 SYMATTR InstName U1 SYMBOL res 992 720 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R1 SYMATTR Value 200K SYMBOL res 992 752 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R2 SYMATTR Value 200K SYMBOL res 992 624 R0 SYMATTR InstName R3 SYMATTR Value 200K SYMBOL res 1008 848 R0 SYMATTR InstName R4 SYMATTR Value 200K SYMBOL cap 112 880 R0 WINDOW 0 23 8 Left 0 WINDOW 3 23 51 Left 0 SYMATTR InstName C1 SYMATTR Value 22nF SYMBOL cap 176 960 R0 WINDOW 0 24 16 Left 0 WINDOW 3 21 47 Left 0 SYMATTR InstName C2 SYMATTR Value 1µF SYMBOL res 256 928 R0 SYMATTR InstName R5 SYMATTR Value 100K SYMBOL res 320 1040 R0 SYMATTR InstName R6 SYMATTR Value 10k SYMBOL cap 256 816 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C3 SYMATTR Value 2.2nF SYMBOL voltage 80 800 R0 WINDOW 3 -42 -26 Left 0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR Value SINE(0 1 {hz}) SYMATTR InstName V2 SYMBOL res 688 1056 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R7 SYMATTR Value 10k SYMBOL cap 784 1040 R0 WINDOW 0 24 12 Left 0 WINDOW 3 21 47 Left 0 SYMATTR InstName C4 SYMATTR Value 1µF SYMBOL LM2907-8 480 896 R0 SYMATTR InstName U2 SYMBOL Pot&Sw\\potentiometer_standard 784 704 R0 WINDOW 0 48 16 Invisible 0 WINDOW 3 -37 -26 Left 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 48 41 Invisible 0 SYMATTR InstName U3 SYMATTR Value Rt=2K set=.0 SYMBOL Pot&Sw\\potentiometer_standard 288 1056 M0 WINDOW 0 48 16 Invisible 0 WINDOW 3 103 41 Left 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 48 41 Invisible 0 SYMATTR InstName U4 SYMATTR Value Rt=10K set=.9 SYMBOL Opamps\\LM324 384 208 R0 SYMATTR InstName U5 SYMBOL Opamps\\LM324 384 368 R0 SYMATTR InstName U6 SYMBOL res 256 32 R0 SYMATTR InstName R8 SYMATTR Value 20K SYMBOL cap 160 64 R0 SYMATTR InstName C5 SYMATTR Value 1µ SYMBOL res 256 384 R0 SYMATTR InstName R9 SYMATTR Value 200K SYMBOL res 160 384 R0 SYMATTR InstName R10 SYMATTR Value 100K SYMBOL Opamps\\LM324 992 112 R0 SYMATTR InstName U7 SYMBOL Opamps\\LM324 992 272 R0 SYMATTR InstName U8 SYMBOL res 832 32 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R11 SYMATTR Value 20K SYMBOL res 832 96 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R12 SYMATTR Value 20K SYMBOL res 832 224 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R13 SYMATTR Value 20K SYMBOL res 832 272 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R14 SYMATTR Value 20K SYMBOL res 336 -384 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R15 SYMATTR Value 5K SYMBOL res 816 -384 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R16 SYMATTR Value 5K SYMBOL res 816 384 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R17 SYMATTR Value 20K SYMBOL res 832 -32 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R18 SYMATTR Value 20K SYMBOL res 832 -128 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R19 SYMATTR Value 20K SYMBOL res 816 464 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R20 SYMATTR Value 20K SYMBOL Pot&Sw\\potentiometer_standard 480 -96 M180 WINDOW 0 48 16 Invisible 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 48 41 Invisible 0 SYMATTR InstName U9 SYMATTR Value Rt=1K set={spd} SYMBOL Pot&Sw\\potentiometer_standard 608 -384 R270 WINDOW 0 48 16 Invisible 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 48 41 Invisible 0 WINDOW 3 90 -54 VRight 0 SYMATTR InstName U10 SYMATTR Value Rt=5K set=.28 SYMBOL res 496 -224 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R21 SYMATTR Value 2.2K SYMBOL res 480 -96 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R22 SYMATTR Value 2K SYMBOL Pot&Sw\\potentiometer_standard 640 96 R0 WINDOW 0 48 16 Invisible 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 48 41 Invisible 0 SYMATTR InstName U11 SYMATTR Value Rt=10K set=.356 SYMBOL Pot&Sw\\potentiometer_standard 80 160 R0 WINDOW 0 48 16 Invisible 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 48 41 Invisible 0 SYMATTR InstName U12 SYMBOL voltage -48 608 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V5 SYMATTR Value 12.333 SYMBOL Comparators\\LM339 1296 -144 R0 SYMATTR InstName U13 SYMBOL Comparators\\LM339 1296 112 R0 SYMATTR InstName U14 TEXT 1104 752 Left 0 ;4 TEXT 432 704 Left 0 ;.tran 0 1 0 TEXT 368 664 Left 0 !.step param hz 60 140 80 TEXT 0 16 VRight 0 ;Cruise Control TEXT 200 16 Left 0 ;20 Hz Oscillator TEXT 544 -200 Left 0 ;5K POT TEXT 104 -256 Left 0 !.tran 0 1 .2 50u startup TEXT 104 -296 Left 0 !.step param spd 0 1 1 TEXT 528 -80 Left 0 ;SPEED TEXT 552 -504 Left 0 ;SEPARATION TEXT 104 -328 Left 0 ;.step param spd 0 1 .1 TEXT 976 112 Left 0 ;1 TEXT 976 272 Left 0 ;2 TEXT 128 -168 Left 0 ;SPEED 0 = 4 VOLT TEXT 112 -128 Left 0 ;SPEED 1 = 6.2 VOLT TEXT 640 -240 Left 0 ;{spd} TEXT 1136 408 Left 0 ;time step error when connected