Version 4 SHEET 1 932 680 WIRE 512 -160 384 -160 WIRE -256 -128 -576 -128 WIRE 384 -96 384 -160 WIRE -576 -64 -576 -128 WIRE 512 0 512 -160 WIRE 384 32 384 -16 WIRE -256 48 -256 -128 WIRE -576 80 -576 16 WIRE 512 96 512 80 WIRE 736 96 512 96 WIRE 512 128 512 96 WIRE -256 176 -256 128 WIRE -192 176 -256 176 WIRE -32 176 -112 176 WIRE 112 176 -32 176 WIRE 256 176 224 176 WIRE 448 176 336 176 WIRE -256 224 -256 176 WIRE -32 224 -32 176 WIRE -304 240 -528 240 WIRE -528 272 -528 240 WIRE -304 320 -304 288 WIRE -256 320 -256 304 WIRE -256 320 -304 320 WIRE -256 336 -256 320 WIRE -32 336 -32 288 WIRE 512 336 512 224 WIRE -528 384 -528 352 FLAG -576 80 0 FLAG 384 32 0 FLAG 512 336 0 FLAG -32 336 0 FLAG -256 336 0 FLAG -528 384 0 SYMBOL voltage 384 -112 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 3.3V SYMBOL res 352 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL cap -48 224 R0 SYMATTR InstName C1 SYMATTR Value 100nF SYMBOL npn 448 128 R0 SYMATTR InstName Q1 SYMATTR Value BC547C SYMBOL res 496 -16 R0 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL Dig_Add\\74HC\\74hc14 160 128 R0 SYMATTR InstName U1 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL res -96 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 190k SYMBOL res -272 32 R0 SYMATTR InstName R4 SYMATTR Value 140k SYMBOL sw -256 320 M180 SYMATTR InstName S1 SYMBOL voltage -528 256 R0 WINDOW 3 19 158 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value PULSE(1 -1 100m 0.1m 0.1m 800m) SYMBOL voltage -576 -80 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 3.3V TEXT -32 504 Left 2 !.tran 0 1 0 startup TEXT -32 544 Left 2 !.INCLUDE 74HC.LIB TEXT 712 136 Left 2 ;Zum Eingang µC TEXT -32 576 Left 2 !.model SW SW()