Version 4
SHEET 1 880 680
WIRE 496 -176 -208 -176
WIRE 656 -176 496 -176
WIRE 496 -144 496 -176
WIRE 656 -112 656 -176
WIRE 336 -96 304 -96
WIRE 432 -96 416 -96
WIRE 304 -16 304 -96
WIRE 384 32 368 32
WIRE 496 32 496 -48
WIRE 496 32 464 32
WIRE 496 48 496 32
WIRE 592 48 496 48
WIRE 656 48 656 -32
WIRE 656 48 592 48
WIRE -80 80 -112 80
WIRE 0 80 -16 80
WIRE 48 80 0 80
WIRE 192 80 144 80
WIRE 272 80 192 80
WIRE 304 80 272 80
WIRE -208 128 -208 -176
WIRE -112 128 -112 80
WIRE 0 128 0 80
WIRE 192 128 192 80
WIRE 272 128 272 80
WIRE 368 128 272 128
WIRE 496 128 496 48
WIRE -208 240 -208 208
WIRE -112 240 -112 208
WIRE 0 240 0 192
WIRE 96 240 96 144
WIRE 192 240 192 192
WIRE 496 240 496 208
FLAG -208 240 0
FLAG -112 240 0
FLAG 0 240 0
FLAG 496 240 0
FLAG 96 240 0
FLAG 368 128 Treppe
FLAG 192 240 0
FLAG 592 48 Schwelle
SYMBOL voltage -208 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL voltage -112 112 R0
WINDOW 3 -52 178 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 3 0 50n 50n 100u 200u 1000)
SYMBOL schottky -16 128 R0
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap -80 96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 2.2n
SYMBOL cap 176 128 R0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL res 480 112 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL pnp 432 -48 M180
SYMATTR InstName Q1
SYMATTR Value BC327-40
SYMBOL npn 368 -16 M0
SYMATTR InstName Q2
SYMATTR Value BC847C
SYMBOL npn 144 144 M270
SYMATTR InstName Q3
SYMATTR Value BC847C
SYMBOL res 480 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL res 320 -80 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 100
SYMBOL res 640 -128 R0
SYMATTR InstName R4
SYMATTR Value 8k
TEXT -226 342 Left 2 !.tran 7m