Version 4
SHEET 1 1076 680
WIRE 240 -192 -64 -192
WIRE 768 -192 656 -192
WIRE 896 -192 848 -192
WIRE 240 -160 240 -192
WIRE 656 -96 656 -192
WIRE 704 -96 656 -96
WIRE 896 -80 896 -192
WIRE 896 -80 768 -80
WIRE 288 -64 64 -64
WIRE 400 -64 368 -64
WIRE 448 -64 400 -64
WIRE 544 -64 512 -64
WIRE 704 -64 544 -64
WIRE 544 -16 544 -64
WIRE 656 -16 656 -96
WIRE 736 -16 736 -48
WIRE -64 96 -64 -192
WIRE 240 96 240 -80
WIRE 544 96 544 64
WIRE 544 96 240 96
WIRE 656 96 656 64
WIRE 656 96 544 96
WIRE 240 176 240 96
WIRE 240 176 176 176
WIRE 400 176 400 -64
WIRE 624 176 400 176
WIRE 896 176 896 -80
WIRE 896 176 704 176
WIRE -64 192 -64 96
WIRE 64 192 64 -64
WIRE 176 224 176 176
WIRE 240 224 240 176
WIRE 400 224 400 176
WIRE 896 224 896 176
WIRE -64 320 -64 272
WIRE 64 320 64 272
WIRE 64 320 -64 320
WIRE 176 320 176 288
WIRE 176 320 64 320
WIRE 240 320 240 304
WIRE 240 320 176 320
WIRE 400 320 400 288
WIRE 400 320 240 320
WIRE 896 320 896 304
WIRE 896 320 400 320
WIRE -64 384 -64 320
FLAG -64 384 0
FLAG -64 96 Vbat
FLAG 896 -80 Vout
FLAG 736 -112 Vbat
FLAG 736 -16 0
SYMBOL voltage -64 176 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL res 256 -64 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res 224 208 R0
SYMATTR InstName R7
SYMATTR Value 100k
SYMBOL voltage 64 176 R0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 24 104 Invisible 0
SYMATTR Value2 AC 1
SYMATTR Value ""
SYMATTR InstName V2
SYMBOL res 912 320 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R8
SYMATTR Value 1k
SYMBOL res 384 -80 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 560 80 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL cap 512 -80 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL cap 384 224 R0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL cap 192 288 R180
WINDOW 0 24 64 Left 0
WINDOW 3 24 8 Left 0
SYMATTR InstName C3
SYMATTR Value 100µF
SYMBOL res 720 160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 672 80 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 752 -176 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL Robertugo\\OPAMP5 736 -144 R0
SYMATTR InstName U2
SYMATTR SpiceModel LM741/NS
TEXT -48 352 Left 0 !;op
TEXT 120 352 Left 0 !.ac dec 25 100 6kilohertz
TEXT 376 -264 Left 0 ;Band-Pass Frequency: 800 to 3450Hz