Version 4 SHEET 1 3380 2208 WIRE 256 480 256 448 WIRE 704 592 672 592 WIRE 736 592 704 592 WIRE 896 592 816 592 WIRE 960 592 896 592 WIRE 1104 592 1040 592 WIRE 256 624 256 560 WIRE 464 656 464 624 WIRE 944 720 944 688 WIRE 896 736 896 592 WIRE 912 736 896 736 WIRE 1104 752 1104 592 WIRE 1104 752 976 752 WIRE 1168 752 1104 752 WIRE -96 768 -240 768 WIRE 32 768 -96 768 WIRE 240 768 112 768 WIRE 320 768 240 768 WIRE 464 768 464 736 WIRE 464 768 384 768 WIRE 672 768 464 768 WIRE 912 768 672 768 WIRE 464 784 464 768 WIRE 1104 800 1104 752 WIRE -240 816 -240 768 WIRE 944 816 944 784 WIRE 608 864 608 848 WIRE 864 880 864 848 WIRE 464 896 464 864 WIRE 240 912 240 768 WIRE 1104 928 1104 864 WIRE 1104 928 928 928 WIRE 464 976 288 976 WIRE 608 976 608 928 WIRE 608 976 464 976 WIRE 864 976 608 976 WIRE 1104 976 1104 928 WIRE -240 992 -240 896 WIRE 608 1024 608 976 WIRE 240 1120 240 1008 WIRE 1104 1120 1104 1056 WIRE 608 1136 608 1104 FLAG 256 624 0 FLAG 256 448 VCC FLAG 944 688 VCC FLAG 464 624 VCC FLAG 464 896 0 FLAG 944 816 0 FLAG 864 848 VCC FLAG 1104 1120 VCC FLAG 608 1136 0 FLAG 240 1120 VCC FLAG 608 848 VCC FLAG -96 768 in FLAG 1104 928 out FLAG 608 592 0 FLAG -240 992 0 FLAG 240 768 att FLAG 464 976 rect FLAG 1168 752 outOPA FLAG 672 768 inOPA FLAG 704 592 X SYMBOL voltage 256 464 R0 WINDOW 123 24 132 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL res 128 752 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 100k SYMBOL res 480 752 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R3 SYMATTR Value 220k SYMBOL res 480 880 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R4 SYMATTR Value 220k SYMBOL res 720 608 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 1k SYMBOL res 944 608 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R6 SYMATTR Value 100k SYMBOL cap 384 752 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 10µ SYMBOL cap 672 576 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 100µ SYMBOL res 1088 960 R0 SYMATTR InstName R9 SYMATTR Value 100k SYMBOL cap 1088 800 R0 SYMATTR InstName C3 SYMATTR Value 10µ SYMBOL res 592 1008 R0 SYMATTR InstName R8 SYMATTR Value 100k SYMBOL cap 592 864 R0 SYMATTR InstName C4 SYMATTR Value 1000µ SYMBOL voltage -240 800 R0 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value2 AC 1 SYMATTR InstName V3 SYMATTR Value SINE(0 {V3} 3) SYMBOL njf 288 912 M0 SYMATTR InstName J2 SYMATTR Value 2N3819 SYMBOL pnp 928 976 R180 SYMATTR InstName Q1 SYMATTR Value BC557C SYMBOL Opamps\\LT1498 944 688 R0 SYMATTR InstName U2 TEXT -128 544 Left 2 !;ac dec 100 0.01 100k TEXT -128 504 Left 2 !.tran 0 100 1m uic TEXT -216 952 Left 2 !.step param V3 LIST 1 2 3