Version 4 SHEET 1 1236 2424 WIRE 160 -224 -80 -224 WIRE 768 -224 160 -224 WIRE 944 -224 768 -224 WIRE 160 -176 160 -224 WIRE 48 -112 -16 -112 WIRE 48 -80 48 -112 WIRE 768 48 768 -224 WIRE -80 128 -80 -224 WIRE 944 128 944 -224 WIRE 48 160 48 0 WIRE 224 160 48 160 WIRE 528 160 304 160 WIRE 560 160 528 160 WIRE 768 176 768 128 WIRE 768 176 624 176 WIRE 880 176 768 176 WIRE 160 192 160 -96 WIRE 320 192 160 192 WIRE 480 192 400 192 WIRE 560 192 480 192 WIRE -80 240 -80 208 WIRE 48 256 48 160 WIRE 160 256 160 192 WIRE 480 272 480 192 WIRE 672 272 480 272 WIRE 944 272 944 224 WIRE 944 272 752 272 WIRE 976 272 944 272 WIRE 944 320 944 272 WIRE 528 336 528 160 WIRE -16 400 -16 -112 WIRE 48 400 48 336 WIRE 48 400 -16 400 WIRE 160 400 160 336 WIRE 160 400 48 400 WIRE 160 448 160 400 WIRE 528 448 528 416 WIRE 944 448 944 400 FLAG -80 240 0 FLAG 160 448 0 FLAG 528 448 0 FLAG 944 448 0 FLAG -80 -224 P5V FLAG 592 208 P5V FLAG 592 144 0 FLAG 976 272 ausg SYMBOL voltage -80 112 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL res 416 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 22k SYMBOL res 768 256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 5.6K SYMBOL res 320 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 22k SYMBOL res 544 432 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R4 SYMATTR Value 130k SYMBOL res 176 352 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R5 SYMATTR Value 4.7K SYMBOL res 176 -80 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R6 SYMATTR Value 2.7K SYMBOL res 64 352 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R7 SYMATTR Value 220 SYMBOL res 960 416 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R8 SYMATTR Value 1k SYMBOL current 48 -80 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I1 SYMATTR Value 8.6 SYMBOL res 752 32 R0 SYMATTR InstName R9 SYMATTR Value 10K SYMBOL npn 880 128 R0 SYMATTR InstName Q1 SYMATTR Value BC547C SYMBOL Opamps\\LTC6240 592 176 M180 SYMATTR InstName U2 TEXT -896 -200 Left 2 !.SUBCKT LM324 1 2 3 4 5\n *\n C1 11 12 5.544E-12\n C2 6 7 20.00E-12\n DC 5 53 DX\n DE 54 5 DX\n DLP 90 91 DX\n DLN 92 90 DX\n DP 4 3 DX\n EGND 99 0 POLY(2) (3,0) (4,0) 0 .5 .5\n FB 7 99 POLY(5) VB VC VE VLP VLN 0 15.91E6 -20E6 20E6 20E6 -20E6\n GA 6 0 11 12 125.7E-6\n GCM 0 6 10 99 7.067E-9\n IEE 3 10 DC 10.04E-6\n HLIM 90 0 VLIM 1K\n Q1 11 2 13 QX\n Q2 12 1 14 QX\n R2 6 9 100.0E3\n RC1 4 11 7.957E3\n RC2 4 12 7.957E3\n RE1 13 10 2.773E3\n RE2 14 10 2.773E3\n REE 10 99 19.92E6\n RO1 8 5 50\n RO2 7 99 50\n RP 3 4 30.31E3\n VB 9 0 DC 0\n VC 3 53 DC 2.100\n VE 54 4 DC .6\n VLIM 7 8 DC 0\n VLP 91 0 DC 40\n VLN 0 92 DC 40\n .MODEL DX D(IS=800.0E-18)\n \n.MODEL QX PNP(IS=800.0E-18 BF=250)\n \n.ENDS TEXT -72 512 Left 2 !.dc I1 0 25m 100u