Version 4
SHEET 1 880 680
WIRE -224 -112 -368 -112
WIRE -32 -112 -224 -112
WIRE 144 -112 -32 -112
WIRE 304 -112 144 -112
WIRE -368 -64 -368 -112
WIRE -224 -64 -224 -112
WIRE -32 -64 -32 -112
WIRE 144 -64 144 -112
WIRE 304 -64 304 -112
WIRE 304 48 304 16
WIRE 336 48 304 48
WIRE -368 64 -368 16
WIRE -32 64 -32 0
WIRE 144 64 144 16
WIRE 160 64 144 64
WIRE 304 128 304 48
WIRE 384 128 304 128
WIRE 512 128 448 128
WIRE 144 176 144 64
WIRE 240 176 144 176
WIRE -224 224 -224 16
WIRE -224 224 -256 224
WIRE -112 224 -224 224
WIRE 48 224 -48 224
WIRE 80 224 48 224
WIRE -224 304 -224 224
WIRE 48 320 48 224
WIRE 192 320 48 320
WIRE 304 320 304 224
WIRE 304 320 272 320
WIRE 400 320 304 320
WIRE 448 320 400 320
WIRE 48 368 48 320
WIRE 144 368 144 272
WIRE 304 368 304 320
WIRE -224 480 -224 384
WIRE 48 480 48 432
WIRE 48 480 -224 480
WIRE 144 480 144 448
WIRE 144 480 48 480
WIRE 304 480 304 448
WIRE 304 480 144 480
WIRE 400 480 400 464
WIRE 400 480 304 480
WIRE 144 528 144 480
FLAG 144 528 0
FLAG -368 64 0
FLAG 512 128 Out
IOPIN 512 128 Out
FLAG -256 224 In
IOPIN -256 224 In
FLAG 160 64 TP1
IOPIN 160 64 BiDir
FLAG 336 48 TP2
IOPIN 336 48 BiDir
FLAG 448 320 TP3
IOPIN 448 320 BiDir
FLAG -32 64 0
SYMBOL npn 80 176 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL npn 240 128 R0
SYMATTR InstName Q2
SYMATTR Value BC547C
SYMBOL res 128 -80 R0
SYMATTR InstName R1
SYMATTR Value 47k
SYMBOL res 288 -80 R0
SYMATTR InstName R2
SYMATTR Value 6.8k
SYMBOL res 288 352 R0
SYMATTR InstName R3
SYMATTR Value 2.2k
SYMBOL res 288 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 13 86 VTop 2
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res 128 352 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL cap 384 320 R0
SYMATTR InstName C1
SYMATTR Value 2.2µ
SYMBOL cap -48 208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10µ
SYMBOL res -240 -80 R0
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL voltage -368 -80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V1
SYMATTR Value 6V
SYMBOL voltage -224 288 R0
WINDOW 3 24 152 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR Value SINE(2 1m 1000)
SYMATTR SpiceLine Rser=600
SYMATTR InstName V2
SYMBOL cap 448 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 10µ
SYMBOL cap 32 368 R0
SYMATTR InstName C4
SYMATTR Value 22n
SYMBOL cap -48 -64 R0
SYMATTR InstName C5
SYMATTR Value 10µ
SYMBOL res 384 368 R0
SYMATTR InstName R6
SYMATTR Value 100
TEXT -400 520 Left 2 !.tran 0 120m 100m
TEXT -448 104 Left 2 ;Batterie 4-9V
TEXT -360 328 Left 2 ;Mikrofon
TEXT 192 528 Left 2 ;Frequenzgang ca 100Hz - 20kHz