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Old 13th September 2002, 05:57 PM   #1
G is offline G  United States
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Default Spice model for LED?

Hello all. I just downloaded a circuit simulator from here:


I would like to simulate the PSU below but I noticed that there is no spice model for an LED. Does anyone know where I could find one? Yes I have searched using google and have had no luck. I've never used a simulator before. Any advice is appreciated.
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File Type: gif ss tube headamp psu led(small).gif (16.6 KB, 210 views)
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Old 13th September 2002, 06:05 PM   #2
artnyos is offline artnyos  United States
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Default spice model for an LED

I have never found one and I have hundreds of spice models.

I doubt you are going to find very decent models for the regulators either just go build thing. It should be fine.

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Old 13th September 2002, 06:22 PM   #3
G is offline G  United States
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Thanks ART.
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Old 13th September 2002, 08:58 PM   #4
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For simulation purpose you could replace the led or a zener by a
voltage source.

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Old 13th September 2002, 11:47 PM   #5
mirlo is offline mirlo  United States
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Default This might be of some use ...

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Old 14th September 2002, 03:33 AM   #6
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Depending on the color and manufacturer, you may end up with an equation that looks a bit like V= 1.97 + 0.08 log(I) + 20I. Good luck.
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