Version 4
SHEET 1 1448 680
WIRE 192 -208 192 -224
WIRE 192 -112 192 -128
WIRE 192 -112 64 -112
WIRE 336 -112 192 -112
WIRE -48 -80 -80 -80
WIRE 128 -80 32 -80
WIRE 512 -80 128 -80
WIRE 592 -80 512 -80
WIRE 832 -80 656 -80
WIRE 912 -80 832 -80
WIRE 1072 -80 992 -80
WIRE 352 -32 272 -32
WIRE 448 -32 432 -32
WIRE 64 0 64 -112
WIRE -80 16 -80 -80
WIRE 32 16 -80 16
WIRE 336 16 336 -112
WIRE 128 32 128 -80
WIRE 128 32 96 32
WIRE 176 32 128 32
WIRE 272 32 272 -32
WIRE 272 32 256 32
WIRE 304 32 272 32
WIRE -368 48 -400 48
WIRE -272 48 -288 48
WIRE -256 48 -272 48
WIRE -144 48 -192 48
WIRE 32 48 -144 48
WIRE 448 48 448 -32
WIRE 448 48 368 48
WIRE 512 48 448 48
WIRE 592 48 512 48
WIRE 704 48 656 48
WIRE 912 48 704 48
WIRE 1072 48 1072 -80
WIRE 1072 48 992 48
WIRE 1136 48 1072 48
WIRE 1168 48 1136 48
WIRE 304 64 272 64
WIRE -400 96 -400 48
WIRE -144 96 -144 48
WIRE -80 96 -80 16
WIRE 704 96 704 48
WIRE 832 96 832 -80
WIRE 1072 96 1072 48
WIRE 544 144 528 144
WIRE 640 144 624 144
WIRE 912 144 896 144
WIRE 1008 144 992 144
WIRE -400 208 -400 176
WIRE -144 208 -144 176
WIRE -144 208 -400 208
WIRE -80 208 -80 176
WIRE -80 208 -144 208
WIRE 272 208 272 64
WIRE 272 208 -80 208
WIRE 704 208 704 192
WIRE 704 208 272 208
WIRE 832 208 832 192
WIRE 832 208 704 208
WIRE 1072 208 1072 160
WIRE 1072 208 832 208
WIRE -400 224 -400 208
WIRE 64 256 64 64
WIRE 192 256 64 256
WIRE 336 256 336 80
WIRE 336 256 192 256
WIRE 1008 256 1008 144
WIRE 1040 256 1008 256
WIRE 1168 272 1104 272
WIRE 192 288 192 256
WIRE 528 288 528 144
WIRE 1040 288 528 288
WIRE 1168 288 1168 272
WIRE 1104 320 1104 304
WIRE 192 384 192 368
WIRE 1168 384 1168 368
FLAG 192 -224 0
FLAG -400 224 0
FLAG 1104 320 0
FLAG -272 48 in
FLAG 512 -80 signal
FLAG 512 48 inv_sig
FLAG 1168 384 0
FLAG 192 384 0
FLAG 1136 48 mixed
SYMBOL voltage 192 -112 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5V
SYMBOL voltage 192 384 M180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 5V
SYMBOL voltage -400 80 M0
WINDOW 3 -122 101 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(0 10m 36k)
SYMBOL voltage 1168 272 R0
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value SINE(2.5 2 35k)
SYMBOL Opamps\\LT1007 64 -32 R0
SYMATTR InstName U1
SYMBOL res -272 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL Opamps\\LT1007 336 -16 R0
SYMATTR InstName U2
SYMBOL res 448 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 272 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 1008 -96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL res 1008 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL cap -192 32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL res -128 80 M0
SYMATTR InstName R9
SYMATTR Value 100k
SYMBOL npn 640 96 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL npn 896 96 M0
WINDOW 0 57 66 Left 2
WINDOW 3 42 28 Left 2
SYMATTR InstName Q2
SYMATTR Value BC547C
SYMBOL Digital\\buf 1104 208 M0
SYMATTR InstName A1
SYMATTR Value2 vhigh=5 vlow=0
SYMBOL res 48 -96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL res -96 80 R0
SYMATTR InstName R10
SYMATTR Value 470
SYMBOL res 640 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL res 896 128 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL cap 1056 96 R0
SYMATTR InstName C2
SYMATTR Value 2.2n
SYMBOL cap 656 -96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL cap 656 32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 10n
TEXT 8 112 Left 2 ;Verstärker
TEXT 280 112 Left 2 ;Inverter
TEXT -476 -112 Left 2 !.tran 0 100m 0 100n
TEXT 728 80 Left 2 ;Mischer