Version 4
SHEET 1 880 680
WIRE 320 -224 -160 -224
WIRE 496 -224 320 -224
WIRE 704 -224 496 -224
WIRE 320 -192 320 -224
WIRE 704 -144 704 -224
WIRE 496 -96 496 -224
WIRE 144 -80 32 -80
WIRE 224 -80 144 -80
WIRE 384 -80 304 -80
WIRE 448 -80 384 -80
WIRE 32 -64 32 -80
WIRE 384 -64 384 -80
WIRE 320 -16 320 -112
WIRE 448 -16 448 -80
WIRE 496 -16 448 -16
WIRE 544 -16 496 -16
WIRE 704 -16 704 -64
WIRE 704 -16 544 -16
WIRE 144 0 144 -16
WIRE 320 32 320 -16
WIRE -160 48 -160 -224
WIRE 256 80 144 80
WIRE 144 176 144 80
WIRE 368 176 144 176
WIRE 448 176 448 80
WIRE 544 176 544 -16
WIRE -160 336 -160 128
WIRE 32 336 32 0
WIRE 32 336 -160 336
WIRE 320 336 320 128
WIRE 320 336 32 336
WIRE 448 336 448 320
WIRE 448 336 320 336
WIRE 544 336 544 240
WIRE 544 336 448 336
FLAG 32 336 0
SYMBOL voltage -160 32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12V
SYMBOL npn 384 -16 R0
SYMATTR InstName Q1
SYMATTR Value BC337-40
SYMBOL npn 256 32 R0
SYMATTR InstName Q2
SYMATTR Value BC547B
SYMBOL npn 320 -64 R0
SYMATTR InstName Q3
SYMATTR Value BC337-40
SYMBOL res 432 224 R0
SYMATTR InstName R1
SYMATTR Value 18
SYMBOL diode 432 176 R0
SYMATTR InstName D1
SYMBOL res 464 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 4700k
SYMBOL res 320 -96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1000k
SYMBOL res 512 0 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 820
SYMBOL res 160 96 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R5
SYMATTR Value 4700k
SYMBOL diode 560 240 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMBOL res 304 -208 R0
SYMATTR InstName R6
SYMATTR Value 470k
SYMBOL cap 16 -64 R0
SYMATTR InstName C1
SYMATTR Value 22n
SYMBOL cap 128 -80 R0
SYMATTR InstName C2
SYMATTR Value 22n
TEXT -194 346 Left 2 !.tran 0 5 0 0.1 startup
TEXT -192 392 Left 2 !;op