Version 4
SHEET 1 956 680
WIRE 592 -80 576 -80
WIRE 752 -80 736 -80
WIRE 576 -48 576 -80
WIRE 736 -48 736 -80
WIRE 576 64 576 32
WIRE 224 112 176 112
WIRE 496 112 448 112
WIRE 736 112 736 32
WIRE 576 160 576 128
WIRE 672 160 576 160
WIRE 224 176 32 176
WIRE 496 176 448 176
WIRE 32 240 32 176
WIRE 96 240 32 240
WIRE 224 240 176 240
WIRE 496 240 496 176
WIRE 496 240 448 240
WIRE 736 240 736 208
WIRE 736 240 496 240
WIRE 768 240 736 240
WIRE -64 256 -80 256
WIRE 576 256 576 160
WIRE -80 272 -80 256
WIRE 32 272 32 240
WIRE 736 272 736 240
WIRE 224 304 176 304
WIRE 32 352 32 336
WIRE 576 352 576 336
WIRE 736 352 736 336
FLAG 32 352 0
FLAG 176 304 VCC
FLAG 176 112 0
FLAG 576 -80 VCC
FLAG 496 112 VCC
FLAG 736 352 0
FLAG -80 352 0
FLAG -80 256 VCC
FLAG 768 240 saw
IOPIN 768 240 Out
FLAG 576 352 0
FLAG 736 -80 VCC
SYMBOL Misc\\NE555 336 208 R0
SYMATTR InstName U1
SYMBOL res 192 224 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL cap 16 272 R0
SYMATTR InstName C1
SYMATTR Value 0.01u
SYMBOL cap 720 272 R0
SYMATTR InstName C2
SYMATTR Value 0.1u
SYMBOL voltage -80 256 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5V
SYMBOL res 560 -64 R0
SYMATTR InstName R2
SYMATTR Value 2.2k
SYMBOL pnp 672 208 M180
SYMATTR InstName Q1
SYMATTR Value 2SA1015
SYMBOL diode 560 64 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL res 560 240 R0
SYMATTR InstName R3
SYMATTR Value 6.8k
SYMBOL res 720 -64 R0
SYMATTR InstName R4
SYMATTR Value 2.2k
TEXT -112 104 Left 0 !.tran 0 3ms 0
TEXT -112 -88 Left 0 !.model 2SA1015 PNP(Is=295.1E-18 Xti=3 Eg=1.11 Vaf=100\n+ Bf=110 Ne=1.5 Ise=0 Ikf=0 Xtb=1.5 Br=10.45 Nc=2 Isc=0\n+ Ikr=0 Rc=15 Cjc=66.2p Mjc=1.054 Vjc=.75 Fc=.5 Cje=5p\n+ Mje=.3333 Vje=.75 Tr=10n Tf=1.661n Itf=0 Vtf=0 Xtf=0)
TEXT -112 64 Left 0 ;.step param R 5k 10k 1k
TEXT -112 32 Left 0 ;.step param V 5V 12V 1V