Version 4
SHEET 1 880 680
WIRE -800 -480 -1168 -480
WIRE -576 -480 -800 -480
WIRE -1216 -416 -1280 -416
WIRE -1168 -416 -1168 -480
WIRE -1216 -400 -1216 -416
WIRE -800 -368 -800 -480
WIRE -1248 -336 -1280 -336
WIRE -1216 -336 -1216 -352
WIRE -1216 -336 -1248 -336
WIRE -1248 -320 -1248 -336
WIRE -1168 -288 -1168 -336
WIRE -1040 -288 -1168 -288
WIRE -576 -256 -576 -480
WIRE -1040 -176 -1040 -224
WIRE -944 -176 -1040 -176
WIRE -800 -176 -800 -304
WIRE -800 -176 -880 -176
WIRE -800 -144 -800 -176
WIRE -800 -144 -880 -144
WIRE -800 -128 -800 -144
WIRE -880 -48 -880 -144
WIRE -1168 -32 -1168 -288
WIRE -800 -16 -800 -48
WIRE -1040 32 -1040 -176
WIRE -880 80 -880 16
WIRE -800 80 -800 64
WIRE -800 80 -880 80
WIRE -800 112 -800 80
WIRE -1168 160 -1168 48
WIRE -864 160 -1168 160
WIRE -1040 240 -1040 112
WIRE -1040 240 -1168 240
WIRE -800 240 -800 208
WIRE -800 240 -1040 240
WIRE -576 240 -576 -176
WIRE -576 240 -800 240
WIRE -576 256 -576 240
FLAG -1248 -320 0
FLAG -576 256 0
SYMBOL sw -1168 -320 M180
SYMATTR InstName S1
SYMBOL voltage -1280 -432 M0
WINDOW 0 32 56 VTop 0
WINDOW 3 95 63 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(-1 1 0.2 20m 20m 0.5)
SYMBOL cap -880 -192 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 470µ
SYMBOL res -1184 -48 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL voltage -576 -272 R0
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL npn2 -864 112 R0
SYMATTR InstName Q1
SYMBOL ind -816 -32 R0
SYMATTR InstName L1
SYMATTR Value 10m
SYMBOL res -816 -144 R0
SYMATTR InstName R4
SYMATTR Value 380
SYMBOL diode -864 16 R180
WINDOW 0 24 64 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D2
SYMBOL diode -816 -368 R0
SYMATTR InstName D1
SYMBOL res -1184 144 R0
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL res -1056 16 R0
SYMATTR InstName R3
SYMATTR Value 470
SYMBOL diode -1056 -288 R0
SYMATTR InstName D3
TEXT -1320 328 Left 0 !.model SW SW(Ron=1 Roff=1Meg Vt=0.5 Vh=-.8)
TEXT -1320 360 Left 0 !.model D D(Ron=1 Roff=10Meg Vfwd=0.5)
TEXT -1320 296 Left 0 !.tran 1.6
TEXT -744 312 Left 0 ;und wer hat's erfunden?
TEXT -744 344 Left 0 ;Axel R. & Rolf Schneider