Version 4 SHEET 1 1988 680 WIRE 672 -80 448 -80 WIRE 864 -80 816 -80 WIRE 1168 -80 864 -80 WIRE 1280 -80 1232 -80 WIRE 1376 -80 1360 -80 WIRE 1568 -80 1376 -80 WIRE 1648 -80 1568 -80 WIRE 1760 -80 1728 -80 WIRE 864 0 864 -80 WIRE 944 48 896 48 WIRE 944 96 944 48 WIRE 864 176 864 96 WIRE 864 176 816 176 WIRE 1168 176 864 176 WIRE 1280 176 1232 176 WIRE 1376 176 1376 -80 WIRE 1376 176 1360 176 WIRE 1568 176 1568 -80 WIRE 1648 176 1568 176 WIRE 1760 192 1760 -80 WIRE 1760 192 1712 192 WIRE 1824 192 1760 192 WIRE 1920 192 1888 192 WIRE 1504 208 1408 208 WIRE 1648 208 1600 208 WIRE 1504 224 1504 208 WIRE 1920 240 1920 192 WIRE 448 272 448 -80 WIRE 672 272 672 176 WIRE 1408 272 1408 208 WIRE 1600 304 1600 208 WIRE 1600 304 1504 304 WIRE 1600 320 1600 304 WIRE 448 432 448 352 WIRE 672 432 672 352 WIRE 672 432 448 432 WIRE 1408 432 1408 352 WIRE 1408 432 672 432 WIRE 1504 432 1504 384 WIRE 1504 432 1408 432 WIRE 1600 432 1600 384 WIRE 1600 432 1504 432 WIRE 1680 432 1680 224 WIRE 1680 432 1600 432 WIRE 1920 432 1920 320 WIRE 1920 432 1680 432 FLAG 448 432 0 FLAG 1920 192 Mix FLAG 944 96 0 FLAG 1408 208 U+ FLAG 1680 160 U+ SYMBOL voltage 1408 256 M0 WINDOW 123 24 124 Left 2 WINDOW 39 24 152 Left 2 SYMATTR InstName V1 SYMATTR Value 10 SYMBOL voltage 448 256 R0 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value SINE(0 1 100) SYMATTR Value2 AC 1 SYMBOL cap 736 -96 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL EXTRA\\AudioOpamp\\TI\\TL071 1680 192 R0 SYMATTR InstName U2 SYMBOL voltage 672 256 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value SINE(0 1 5k) SYMBOL res 1488 320 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL res 1488 288 R0 SYMATTR InstName R2 SYMATTR Value 10k SYMBOL cap 1584 320 R0 SYMATTR InstName C2 SYMATTR Value 10µ SYMBOL cap 1888 176 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 10µ SYMBOL res 1904 224 R0 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL cap 736 160 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 1µ SYMBOL res 832 -96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL res 832 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 10k SYMBOL res 1744 -96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 100k SYMBOL EXTRA\\Misc\\pot 864 48 M0 SYMATTR InstName U1 SYMATTR Value2 T={T} SYMBOL res 1376 -96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 50k SYMBOL res 1376 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 50k SYMBOL cap 1232 -96 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 1µ SYMBOL cap 1232 160 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 1µ TEXT 428 508 Left 2 !.tran 0.1 TEXT 432 544 Left 2 !.step param T list 0 0.5 1