Version 4 SHEET 1 956 680 WIRE 592 96 592 80 WIRE 688 96 688 80 WIRE 144 112 16 112 WIRE 336 160 304 160 WIRE 16 176 16 112 WIRE 48 176 16 176 WIRE 464 176 400 176 WIRE 496 176 464 176 WIRE 592 176 576 176 WIRE 688 176 592 176 WIRE 816 176 688 176 WIRE 144 192 144 112 WIRE 144 192 112 192 WIRE 160 192 144 192 WIRE 256 192 240 192 WIRE 336 192 256 192 WIRE 0 208 -48 208 WIRE 48 208 0 208 WIRE 464 208 464 176 WIRE 592 208 592 176 WIRE 256 224 256 192 WIRE 688 240 688 176 WIRE 816 240 816 176 WIRE -48 256 -48 208 WIRE 256 304 256 288 WIRE 304 304 304 160 WIRE 464 304 464 272 WIRE 464 304 304 304 WIRE 592 304 592 288 WIRE 592 304 464 304 WIRE 592 320 592 304 WIRE -48 352 -48 336 WIRE 592 416 592 400 WIRE 688 416 688 304 WIRE 688 416 592 416 WIRE 816 416 816 304 WIRE 816 416 688 416 WIRE 848 416 816 416 WIRE 592 432 592 416 WIRE 592 512 592 496 FLAG 256 304 0 FLAG 592 512 0 FLAG 848 416 Out IOPIN 848 416 Out FLAG 0 208 In FLAG 592 96 0 FLAG 688 96 0 FLAG 592 0 V+ FLAG 688 0 V- FLAG 368 208 V- FLAG 80 224 V- FLAG 368 144 V+ FLAG 80 160 V+ FLAG -48 352 0 FLAG 256 192 1st_Fil FLAG 688 176 D SYMBOL Opamps\\LM741 80 128 R0 SYMATTR InstName U1 SYMBOL res 256 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL cap 240 224 R0 SYMATTR InstName C1 SYMATTR Value 1µF SYMBOL cap 448 208 R0 SYMATTR InstName C2 SYMATTR Value 2nF SYMBOL cap 576 432 R0 SYMATTR InstName C3 SYMATTR Value .1µf SYMBOL res 576 192 R0 SYMATTR InstName R2 SYMATTR Value 300k SYMBOL res 592 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL diode 672 240 R0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL diode 832 304 R180 WINDOW 0 -24 -4 Left 2 WINDOW 3 23 59 Left 2 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL res 576 304 R0 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL battery 592 -16 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 15V SYMBOL battery 688 96 M180 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 15V SYMBOL voltage -48 240 R0 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value PULSE(0 10v .1ms 1uf) SYMATTR Value2 AC 1 SYMBOL Opamps\\LM741 368 112 R0 SYMATTR InstName U2 TEXT -82 536 Left 2 !.ac oct 1000 1 100k