Version 4
SHEET 1 1564 680
WIRE -160 352 -208 352
WIRE -80 352 -160 352
WIRE 272 352 224 352
WIRE 352 352 272 352
WIRE -208 384 -208 352
WIRE -80 384 -80 352
WIRE 224 384 224 352
WIRE 352 384 352 352
WIRE -208 496 -208 464
WIRE -80 496 -80 448
WIRE -80 496 -208 496
WIRE 224 496 224 464
WIRE 352 496 352 448
WIRE 352 496 224 496
WIRE -208 512 -208 496
WIRE 224 512 224 496
FLAG -208 512 0
FLAG -160 352 VF_red
FLAG 224 512 0
FLAG 272 352 VF_green
SYMBOL diode -96 384 R0
SYMATTR InstName D_RED
SYMATTR Value LED_RED
SYMBOL current -208 464 M180
WINDOW 0 24 88 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName I1
SYMATTR Value 1m
SYMBOL diode 336 384 R0
SYMATTR InstName D_GREEN
SYMATTR Value LED_GREEN
SYMBOL bi 224 464 M180
WINDOW 0 24 80 Left 2
WINDOW 3 15 -4 Left 2
SYMATTR InstName B1
SYMATTR Value I=I(I1)
TEXT -240 168 Left 2 !.model  LED_GREEN D(Is=8.2e-25 N=1.46 Rs=5.1 Eg=2.23 Tnom={Tmeas})
TEXT -240 216 Left 2 !.model  LED_RED   D(Is=2.4e-20 N=1.655 Rs=1.5 Eg=2.17 Tnom={Tmeas})
TEXT -240 120 Left 2 !.dc dec I1 10u 50m 50
TEXT -240 64 Left 2 !.op
TEXT -240 24 Left 2 !.param Tmeas=25