Version 4
SHEET 1 928 852
WIRE 80 -32 -192 -32
WIRE 800 -32 80 -32
WIRE 80 112 80 -32
WIRE 128 112 80 112
WIRE 400 112 352 112
WIRE -192 160 -192 -32
WIRE 608 176 352 176
WIRE 800 192 800 -32
WIRE 128 240 80 240
WIRE 480 240 352 240
WIRE 608 240 608 176
WIRE 608 240 560 240
WIRE 688 240 688 208
WIRE 688 240 608 240
WIRE 736 240 688 240
WIRE 416 304 352 304
WIRE 800 320 800 288
WIRE -192 368 -192 240
WIRE 80 368 80 240
WIRE 608 368 608 240
WIRE 608 368 80 368
WIRE 800 416 800 384
WIRE 800 512 800 480
WIRE 800 608 800 576
WIRE 608 688 608 368
WIRE 800 688 800 672
WIRE 608 832 608 752
WIRE 800 832 800 768
FLAG -192 368 0
FLAG 80 -32 12V
FLAG 400 112 0
FLAG 608 832 0
FLAG 800 832 0
FLAG 416 304 12V
FLAG 688 208 UB
SYMBOL Misc\\NE555 240 208 M0
SYMATTR InstName U1
SYMBOL voltage -192 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res 576 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 33k
SYMBOL npn 736 192 R0
SYMATTR InstName Q1
SYMATTR Value BC847A
SYMBOL res 784 672 R0
SYMATTR InstName R2
SYMATTR Value 470
SYMBOL cap 592 688 R0
SYMATTR InstName C1
SYMATTR Value 100µ
SYMBOL LED 784 320 R0
SYMATTR InstName D1
SYMBOL LED 784 416 R0
SYMATTR InstName D2
SYMBOL LED 784 512 R0
SYMATTR InstName D3
SYMBOL LED 784 608 R0
SYMATTR InstName D4
TEXT -226 568 Left 2 !.tran 10