Version 4
SHEET 1 880 680
WIRE 0 -80 0 -96
WIRE 0 16 0 0
WIRE 32 16 0 16
WIRE 128 16 96 16
WIRE 144 16 128 16
WIRE 224 16 208 16
WIRE 288 16 224 16
WIRE 400 16 288 16
WIRE 592 16 400 16
WIRE 0 32 0 16
WIRE 688 32 656 32
WIRE 128 48 128 16
WIRE 224 48 224 16
WIRE 288 48 288 16
WIRE 592 48 544 48
WIRE -160 80 -176 80
WIRE -64 80 -80 80
WIRE 0 144 0 128
WIRE 128 144 128 112
WIRE 224 144 224 112
WIRE 288 144 288 128
WIRE 464 192 464 176
WIRE 544 192 544 48
WIRE 544 192 464 192
WIRE 464 208 464 192
WIRE 464 304 464 288
FLAG 0 144 0
FLAG -176 80 Lüfter
IOPIN -176 80 In
FLAG -320 -144 Lüfter
IOPIN -320 -144 In
FLAG -320 -64 0
FLAG -224 -64 0
FLAG -224 -144 +5V
IOPIN -224 -144 In
FLAG 0 -96 +5V
IOPIN 0 -96 In
FLAG 128 144 0
FLAG 224 144 0
FLAG 288 144 0
FLAG 400 16 zum_Komparator
IOPIN 400 16 In
FLAG 624 0 +5V
IOPIN 624 0 In
FLAG 624 64 0
FLAG 464 96 +5V
IOPIN 464 96 In
FLAG 464 304 0
FLAG 688 32 out
IOPIN 688 32 In
SYMBOL res -64 64 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 20k
SYMBOL npn -64 32 R0
SYMATTR InstName Q1
SYMATTR Value BC547B
SYMBOL res -16 -96 R0
SYMATTR InstName R2
SYMATTR Value 500
SYMBOL voltage -320 -160 R0
WINDOW 3 -52 133 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 50m 1u 1u 1m 2m 200)
SYMBOL voltage -224 -160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL diode 144 112 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 144 32 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL cap 208 48 R0
SYMATTR InstName C1
SYMATTR Value 5µ
SYMBOL res 272 32 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL cap 96 0 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 30µ
SYMBOL Opamps\\UniversalOpamp 624 32 R0
SYMATTR InstName U1
SYMBOL res 448 80 R0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 448 192 R0
SYMATTR InstName R5
SYMATTR Value 10k
TEXT -392 168 Left 0 !.tran 1000m