Version 4
SHEET 1 884 680
WIRE 192 -96 -528 -96
WIRE 192 -80 192 -96
WIRE 192 48 192 0
WIRE 400 48 192 48
WIRE 192 96 192 48
WIRE 400 96 400 48
WIRE -160 144 -272 144
WIRE -48 144 -96 144
WIRE 80 144 32 144
WIRE 128 144 80 144
WIRE 80 192 80 144
WIRE -528 208 -528 -96
WIRE -272 208 -272 144
WIRE 80 304 80 272
WIRE 192 304 192 192
WIRE 192 304 80 304
WIRE -528 352 -528 288
WIRE -272 352 -272 288
WIRE 192 352 192 304
WIRE 400 352 400 176
FLAG 192 352 0
FLAG -528 352 0
FLAG -272 352 0
FLAG 400 352 0
SYMBOL npn 128 96 R0
SYMATTR InstName Q1
SYMATTR Value BC337-25
SYMBOL res 176 -96 R0
SYMATTR InstName R1
SYMATTR Value 4.7K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 48 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 47.5K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 64 176 R0
SYMATTR InstName R3
SYMATTR Value 10K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL voltage -528 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5V
SYMATTR Value2 ""
SYMATTR SpiceLine ""
SYMBOL Misc\\signal -272 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(20 40 1 0 0 0 10)
SYMATTR Value2 ""
SYMATTR SpiceLine ""
SYMBOL diode -160 160 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL res 384 80 R0
SYMATTR InstName R4
SYMATTR Value 5Meg
SYMATTR SpiceLine tol=1 pwr=0.1
TEXT 272 24 Left 2 ;DIGITALER EINGANG
TEXT 472 128 Left 2 ;INNENWIEDERSTAND ATMEGA
TEXT -232 248 Left 2 ;KFZ SIGNAL
TEXT -480 248 Left 2 ;5V AMTEGA
TEXT -562 376 Left 2 !.tran 10