Version 4 SHEET 1 1660 708 WIRE 240 -96 64 -96 WIRE 928 -96 240 -96 WIRE 1104 -96 928 -96 WIRE 1600 -96 1104 -96 WIRE 64 -64 64 -96 WIRE 240 -64 240 -96 WIRE 928 -64 928 -96 WIRE 1104 -64 1104 -96 WIRE 1600 0 1600 -96 WIRE 64 32 64 16 WIRE 240 32 240 16 WIRE 928 32 928 16 WIRE 1104 32 1104 16 WIRE 1600 48 1600 0 WIRE 144 80 128 80 WIRE 176 80 144 80 WIRE 1008 80 992 80 WIRE 1040 80 1008 80 WIRE 64 160 64 128 WIRE 144 160 144 80 WIRE 144 160 64 160 WIRE 384 160 368 160 WIRE 496 160 464 160 WIRE 928 160 928 128 WIRE 1008 160 1008 80 WIRE 1008 160 928 160 WIRE 1248 160 1232 160 WIRE 1360 160 1328 160 WIRE -96 192 -112 192 WIRE 0 192 -16 192 WIRE 128 192 0 192 WIRE 768 192 752 192 WIRE 864 192 848 192 WIRE 992 192 864 192 WIRE 64 224 64 160 WIRE 928 224 928 160 WIRE 0 240 0 192 WIRE 32 240 0 240 WIRE 448 240 416 240 WIRE 864 240 864 192 WIRE 896 240 864 240 WIRE 1312 240 1280 240 WIRE 128 256 128 192 WIRE 128 256 96 256 WIRE 240 256 240 128 WIRE 272 256 240 256 WIRE 368 256 368 160 WIRE 368 256 352 256 WIRE 384 256 368 256 WIRE 992 256 992 192 WIRE 992 256 960 256 WIRE 1104 256 1104 128 WIRE 1136 256 1104 256 WIRE 1232 256 1232 160 WIRE 1232 256 1216 256 WIRE 1248 256 1232 256 WIRE 1600 256 1600 128 WIRE 1600 256 1568 256 WIRE -144 272 -160 272 WIRE -48 272 -144 272 WIRE 32 272 -48 272 WIRE 496 272 496 160 WIRE 496 272 448 272 WIRE 560 272 496 272 WIRE 640 272 560 272 WIRE 720 272 704 272 WIRE 816 272 720 272 WIRE 896 272 816 272 WIRE 1360 272 1360 160 WIRE 1360 272 1312 272 WIRE 1424 272 1360 272 WIRE 1568 272 1568 256 WIRE -48 288 -48 272 WIRE 384 288 368 288 WIRE 816 288 816 272 WIRE 1248 288 1232 288 WIRE -160 304 -160 272 WIRE 704 304 704 272 WIRE 368 320 368 288 WIRE 1232 320 1232 288 WIRE 64 336 64 288 WIRE 144 336 64 336 WIRE 928 336 928 288 WIRE 1008 336 928 336 WIRE 64 368 64 336 WIRE 240 368 240 256 WIRE 928 368 928 336 WIRE 1104 368 1104 256 WIRE -160 400 -160 384 WIRE -48 400 -48 368 WIRE 704 400 704 384 WIRE 816 400 816 368 WIRE 144 416 144 336 WIRE 144 416 128 416 WIRE 176 416 144 416 WIRE 1008 416 1008 336 WIRE 1008 416 992 416 WIRE 1040 416 1008 416 WIRE 1600 432 1600 256 WIRE 64 496 64 464 WIRE 240 496 240 464 WIRE 928 496 928 464 WIRE 1104 496 1104 464 WIRE 64 592 64 576 WIRE 240 592 240 576 WIRE 240 592 64 592 WIRE 416 592 416 304 WIRE 416 592 240 592 WIRE 928 592 928 576 WIRE 928 592 416 592 WIRE 1104 592 1104 576 WIRE 1104 592 928 592 WIRE 1280 592 1280 304 WIRE 1280 592 1104 592 WIRE 1600 592 1600 512 WIRE 1600 592 1280 592 FLAG -112 192 0 FLAG 368 320 0 FLAG -160 400 0 FLAG 1568 272 0 FLAG -48 400 0 FLAG 1600 0 Vcc FLAG 448 240 Vcc FLAG 752 192 0 FLAG 1232 320 0 FLAG 704 400 0 FLAG 816 400 0 FLAG 1312 240 Vcc DATAFLAG 560 272 "" DATAFLAG -144 272 "" DATAFLAG 1424 272 "" DATAFLAG 720 272 "" SYMBOL Opamps\\LT1363 64 192 R0 SYMATTR InstName U1 SYMBOL Opamps\\LT1363 416 208 R0 WINDOW 0 13 131 Left 2 SYMATTR InstName U2 SYMBOL npn 176 368 R0 SYMATTR InstName Q1 SYMATTR Value 2N2222A SYMBOL npn 128 368 M0 SYMATTR InstName Q2 SYMATTR Value 2N2222A SYMBOL 0_UofEvansville\\20_bjt_transistors\\pnp 128 128 R180 SYMATTR InstName Q3 SYMATTR Value 2N2907 SYMBOL 0_UofEvansville\\20_bjt_transistors\\pnp 176 128 M180 SYMATTR InstName Q4 SYMATTR Value 2N2907 SYMBOL res 48 -80 R0 SYMATTR InstName R7 SYMATTR Value 220 SYMBOL res 224 -80 R0 SYMATTR InstName R8 SYMATTR Value 220 SYMBOL res 48 480 R0 SYMATTR InstName R5 SYMATTR Value 220 SYMBOL res 224 480 R0 SYMATTR InstName R4 SYMATTR Value 219.73 SYMBOL res 0 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 10k SYMBOL res 368 240 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL res 480 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 20k SYMBOL voltage 1600 32 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 15 SYMBOL voltage 1600 416 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 15 SYMBOL res -64 272 R0 SYMATTR InstName R2 SYMATTR Value 10k SYMBOL voltage -160 288 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 1V SYMBOL Opamps\\LT1363 1280 208 R0 WINDOW 0 13 131 Left 2 SYMATTR InstName U4 SYMBOL npn 1040 368 R0 SYMATTR InstName Q5 SYMATTR Value 2N2222A SYMBOL npn 992 368 M0 SYMATTR InstName Q6 SYMATTR Value 2N2222A SYMBOL 0_UofEvansville\\20_bjt_transistors\\pnp 992 128 R180 SYMATTR InstName Q7 SYMATTR Value 2N2907 SYMBOL 0_UofEvansville\\20_bjt_transistors\\pnp 1040 128 M180 SYMATTR InstName Q8 SYMATTR Value 2N2907 SYMBOL res 912 -80 R0 SYMATTR InstName R9 SYMATTR Value 220 SYMBOL res 1088 -80 R0 SYMATTR InstName R10 SYMATTR Value 220 SYMBOL res 912 480 R0 SYMATTR InstName R11 SYMATTR Value 220 SYMBOL res 1088 480 R0 SYMATTR InstName R12 SYMATTR Value 219.73 SYMBOL res 864 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R13 SYMATTR Value 10k SYMBOL res 1232 240 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 1k SYMBOL res 1344 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R15 SYMATTR Value 20k SYMBOL res 800 272 R0 SYMATTR InstName R16 SYMATTR Value 10k SYMBOL voltage 704 288 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value 1V SYMBOL EXTRA\\AudioOpamp\\TI\\TL072 928 256 R0 SYMATTR InstName U3 TEXT -194 602 Left 2 !.op