Version 4
SHEET 1 1204 1020
WIRE 224 96 48 96
WIRE 400 96 224 96
WIRE 448 96 400 96
WIRE 528 96 448 96
WIRE 576 96 528 96
WIRE 48 128 48 96
WIRE 400 128 400 96
WIRE 528 128 528 96
WIRE 224 144 224 96
WIRE 448 144 448 96
WIRE 576 144 576 96
WIRE 48 224 48 208
WIRE 224 224 224 208
WIRE 224 224 48 224
WIRE 400 224 400 208
WIRE 400 224 224 224
WIRE 448 224 448 192
WIRE 448 224 400 224
WIRE 528 224 528 208
WIRE 528 224 448 224
WIRE 576 224 576 192
WIRE 576 224 528 224
WIRE 48 256 48 224
FLAG 48 256 0
SYMBOL LED 208 144 R0
SYMATTR InstName D1
SYMATTR Value LED-1
SYMBOL voltage 48 112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 0
SYMBOL g2 400 224 R180
WINDOW 3 -297 -113 Left 2
SYMATTR InstName G1
SYMATTR Value table = (3.2 0, 3.2 0.5, 3.4 0.5, 3.4 0)
SYMBOL g2 528 224 R180
WINDOW 3 -168 -181 Left 2
SYMATTR InstName G2
SYMATTR Value table = (3.4 0, 3.4 0.5, 3.6 0.5, 3.6 0)
TEXT 24 296 Left 2 !.dc V1 0 3.7 0.01
TEXT 24 336 Left 2 !.model LED-1 D\n+ IS=1.0E-21\n+ N=2.7\n+ RS = 0.15
TEXT 264 312 Left 2 ;Vf bin V2
TEXT 264 376 Left 2 ;Vf bin V3