Version 4
SHEET 1 1120 680
WIRE 112 48 -16 48
WIRE 304 48 176 48
WIRE -16 128 -16 48
WIRE 304 144 304 128
WIRE 304 144 240 144
WIRE 384 144 304 144
WIRE 400 144 384 144
WIRE 528 144 480 144
WIRE 608 144 528 144
WIRE 672 144 608 144
WIRE 816 144 672 144
WIRE 960 144 816 144
WIRE 528 176 528 144
WIRE 672 176 672 144
WIRE 816 176 816 144
WIRE 960 176 960 144
WIRE 240 192 240 144
WIRE 384 192 384 144
WIRE -16 288 -16 208
WIRE 240 288 240 256
WIRE 240 288 -16 288
WIRE 384 288 384 256
WIRE 384 288 240 288
WIRE 528 288 528 240
WIRE 528 288 384 288
WIRE 672 288 672 240
WIRE 672 288 528 288
WIRE 816 288 816 240
WIRE 816 288 672 288
WIRE 960 288 960 240
WIRE 960 288 816 288
WIRE -16 304 -16 288
FLAG -16 304 0
FLAG 608 144 VD
SYMBOL voltage -16 112 R0
WINDOW 3 29 209 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 15 .5 10u 10u 1 2)
SYMBOL diode 112 64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL Misc\\EuropeanResistor 288 32 R0
SYMATTR InstName R1
SYMATTR Value 100
SYMBOL Misc\\EuropeanResistor 496 128 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 47
SYMBOL LED 512 176 R0
SYMATTR InstName D2
SYMATTR Value LUW-W5AP
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 656 176 R0
SYMATTR InstName D3
SYMATTR Value LUW-W5AP
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 800 176 R0
SYMATTR InstName D4
SYMATTR Value LUW-W5AP
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 944 176 R0
SYMATTR InstName D5
SYMATTR Value LUW-W5AP
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL zener 400 256 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -90 -57 Left 2
SYMATTR InstName D6
SYMATTR Value BZX84C6V2L
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 224 192 R0
SYMATTR InstName C1
SYMATTR Value 2m
TEXT 14 358 Left 2 !.tran 0 5 0 1m