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1072 -x FLAG -2768 1168 -z FLAG -2240 1184 vert FLAG -1536 1280 -15v FLAG -1536 1120 +15v FLAG -1696 1200 y FLAG -1264 1184 horiz FLAG -1952 1600 xx FLAG -2688 2016 xx FLAG -2704 2144 z FLAG -2608 2256 0 FLAG -2240 2144 0 FLAG -2256 1968 +15v FLAG -2240 2288 -15v SYMBOL Opamps\\LT1057 -4000 1104 R0 SYMATTR InstName U1 SYMBOL Opamps\\LT1057 -3776 1264 R0 SYMATTR InstName U2 SYMBOL Opamps\\LT1057 -3808 1856 R0 SYMATTR InstName U3 SYMBOL Opamps\\LT1057 -3504 2048 R0 SYMATTR InstName U4 SYMBOL Opamps\\LT1057 -2224 1616 R0 SYMATTR InstName U5 SYMBOL Opamps\\LT1057 -1712 2064 R0 SYMATTR InstName U6 SYMBOL res -4240 1056 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 100k SYMBOL res -4240 1168 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value 100k SYMBOL res -3920 1184 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL res -3808 1184 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL cap -3840 1760 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C2 SYMATTR Value 2.2n SYMBOL Misc\\battery -4624 1552 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 15 SYMBOL Misc\\battery -4432 1664 R180 WINDOW 0 24 104 Left 2 WINDOW 3 24 16 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 15 SYMBOL cap -4704 1520 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 100n SYMBOL cap -4288 1520 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 100n SYMBOL res -3872 1728 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 100k SYMBOL res -3872 1888 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 560k SYMBOL res -3584 1904 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 10k SYMBOL res -3440 1904 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 10k SYMBOL res -2336 1504 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 10k SYMBOL res -2336 1648 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 56k SYMBOL res -2016 1504 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 10k SYMBOL res -1824 2096 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 5.1k SYMBOL res -1824 1936 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R13 SYMATTR Value 390k SYMBOL cap -1664 1936 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 2.2n SYMBOL Misc\\battery -1696 1632 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value -.5v SYMBOL cap -3968 976 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 2.2n SYMBOL Opamps\\LT1057 -2464 1120 R0 SYMATTR InstName U9 SYMBOL Opamps\\LT1057 -1360 1904 R0 SYMATTR InstName U8 SYMBOL res -1456 1936 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 10k SYMBOL res -1312 1792 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R15 SYMATTR Value 10k SYMBOL res -2608 1056 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R16 SYMATTR Value 10k SYMBOL res -2608 1152 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R17 SYMATTR Value 10k SYMBOL res -2416 960 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R19 SYMATTR Value 10k SYMBOL Opamps\\LT1057 -1536 1120 R0 SYMATTR InstName U10 SYMBOL Misc\\DIP8 -2432 2112 R0 WINDOW 3 0 -116 Center 2 SYMATTR InstName U7 SYMATTR Value AD633_JT TEXT -4856 2256 Left 2 !.tran 0 .200 .100 1E-05 TEXT -2736 1864 Left 2 ;R10, R11 and -15v determine the "c" coefficient. TEXT -4160 2088 Left 2 ;R6 and C2 determine the "a" coefficient. TEXT -1560 1696 Left 2 ;V3, R13, and C5 determine the "b" coefficient. TEXT -1960 1648 Left 2 ;xx = x - c TEXT -3432 -288 Left 6 ;RÖSSLER ATTRACTOR CIRCUIT TEXT -3848 -168 Left 5 ;(Based on an LTspice circuit simulation by Glen Kleinschmidt www.glensstuff.com) TEXT -3512 -496 Left 7 ;www.chaotic-circuits.com TEXT -3296 -24 Left 6 ;RÖSSLER EQUATIONS\n \ndx/dt = -(y + z) \n \ndy/dt = x + ay\n \ndz/dt = b + z(x - c) TEXT -816 1712 Left 3 !***********************************************************************************\n**** SPICE MODELING OF AD633 by JIM THOMPSON, http://www.analog-innovations.com/ © 2014 ****\n***********************************************************************************\n***** Rudimentary Behavioral Model of Analog Devices AD633 Analog Multiplier ******\n***** Noise, CMRR and Feed-Thru are not modeled\n***********************************************************************************\n*** Per Pin Name X1 X2 Y1 Y2 -VS Z W +VS ***\n*** | | | | | | | | ***\n.SUBCKT AD633_JT 1 2 3 4 5 6 7 8 \nG_GX1 1 5 VALUE { (1+TANH(22*(V(1,5)-2)))/2*V(ITEMP) }\nG_GX2 2 5 VALUE { (1+TANH(22*(V(2,5)-2)))/2*V(ITEMP) }\nG_GY1 3 5 VALUE { (1+TANH(22*(V(3,5)-2)))/2*V(ITEMP) }\nG_GY2 4 5 VALUE { (1+TANH(22*(V(4,5)-2)))/2*V(ITEMP) }\nG_GZ 6 5 VALUE { (1+TANH(22*(V(6,5)-2)))/2*V(ITEMP) }\nRCON_TAG3 7 0 1G\nE_E1 ITEMP 0 VALUE { 1nA*(489.9-2.0842*TEMP+4.3472m*TEMP*TEMP) }\nG_G1 N_1 7 VALUE { 30mA*TANH(450*V(N_2, 7))*V(BOUNDS) }\nC_C1 N_2 0 100pF \nG_GIQ 8 5 VALUE { (1+TANH(22*(V(8,5)-2)))/2*4mA }\nR_RNOF2 7 5 1G \nC_COUT 7 5 5pF \nE_E3 BOUNDS 0 VALUE {\n+ (1+TANH(25*(V(8,7)-2.2)))*(1+TANH(25*(V(7,5)-2.2)))/4 }\nR_R1 WINT N_2 1.59155K \nE_E2 WINT 0 VALUE { V(1,2)*V(3,4)/10+V(6) }\n.MODEL D D\nD_D1 N_3 N_4 D \nF_F1 N_3 8 VF_F1 1\nVF_F1 8 N_1 0\nD_D2 8 N_3 D \nR_RNOF1 8 7 1G \nF_F2 8 5 VF_F2 1\nVF_F2 N_4 8 0\nC_C2 6 5 4pF \nC_C3 4 5 4pF \nC_C4 3 5 4pF \nC_C5 2 5 4pF \nC_C6 1 5 4pF \n.ENDS AD633_JT\n*********************************************************************************** TEXT -2568 2456 Left 3 ;AD633_JT\nPIN ASSIGNMENT\n \nPIN1 X1 PIN5 -Vs\nPIN2 X2 PIN6 Z\nPIN3 Y1 PIN7 W\nPIN4 Y2 PIN8 +Vs