Version 4
SHEET 1 880 680
WIRE -416 -240 -576 -240
WIRE -64 -240 -416 -240
WIRE -416 -112 -416 -240
WIRE -208 -112 -416 -112
WIRE 512 -112 -208 -112
WIRE 512 -96 512 -112
WIRE 544 -96 512 -96
WIRE -208 -64 -208 -112
WIRE 544 -16 544 -96
WIRE -192 16 -208 16
WIRE 544 80 544 64
WIRE 576 80 544 80
WIRE -848 96 -848 -112
WIRE -720 96 -848 96
WIRE -416 96 -416 -112
WIRE -416 96 -496 96
WIRE 576 128 576 80
WIRE 576 128 544 128
WIRE 592 128 576 128
WIRE -800 144 -896 144
WIRE 592 144 592 128
WIRE -800 160 -800 144
WIRE -720 160 -800 160
WIRE -448 160 -496 160
WIRE -240 160 -448 160
WIRE -192 160 -192 16
WIRE -192 160 -240 160
WIRE -928 176 -928 160
WIRE 528 176 528 80
WIRE -192 192 -192 160
WIRE -720 224 -800 224
WIRE -448 224 -448 160
WIRE -448 224 -496 224
WIRE -384 224 -448 224
WIRE -240 224 -240 160
WIRE -240 224 -304 224
WIRE -896 272 -896 144
WIRE -896 272 -912 272
WIRE -752 288 -768 288
WIRE -720 288 -752 288
WIRE -256 288 -496 288
WIRE -896 320 -896 272
WIRE -768 320 -768 288
WIRE -752 384 -752 288
WIRE -64 384 -64 -240
WIRE -64 384 -752 384
WIRE 592 384 592 224
WIRE 592 384 512 384
WIRE -64 400 -64 384
WIRE 512 416 512 384
WIRE -192 432 -192 256
WIRE 512 432 512 416
WIRE -800 496 -800 224
WIRE -800 496 -832 496
WIRE 448 496 448 80
WIRE 448 496 -800 496
FLAG -848 -112 0
FLAG -256 352 0
FLAG -192 432 0
FLAG -896 400 0
FLAG 512 416 0
FLAG -576 -160 0
SYMBOL Misc\\NE555 -608 192 R0
SYMATTR InstName U1
SYMBOL cap -272 288 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL res -288 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res -224 -80 R0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL cap -208 192 R0
SYMATTR InstName C2
SYMATTR Value 100µ
SYMBOL voltage -896 304 R0
WINDOW 3 -100 257 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0 10 10ms 0 0 1m 200m 1k)
SYMBOL npn 528 128 R0
WINDOW 3 -114 185 Left 2
SYMATTR InstName Q1
SYMBOL res 528 -32 R0
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res 544 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL voltage -576 -256 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 10
TEXT -998 582 Left 2 !.tran 0 300m 0 1m