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Old 09-29-2010, 03:29 PM #33
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Default Re: Problems with diode, What i did wrong?

small voltage rise = large current increase with these types of devices. This is why CC is recommended.


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Old 09-29-2010, 03:59 PM #34
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Default Re: Problems with diode, What i did wrong?

What did you do to LED a 1W casio diode? ESD?

I've seen these take 2A+ and still live.

But this behavior is normal for these diodes. I thought it was abnormal because I thought you were talking about a 660nm diode.

Compare yours with the measurements I took off one of mine in this thread. You'll probably find the the voltage and current numbers for yours are fairly close to mine if it's electrically intact.

Yet another 445nm labby
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Old 09-30-2010, 12:21 PM #35
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Default Re: Problems with diode, What i did wrong?

Does this means voltage rise = resistance drop?
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Old 10-01-2010, 01:12 AM #36
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Default Re: Problems with diode, What i did wrong?

You have it backwards. It's still a diode in the circuit. As voltage increases, it's resistance increases. That's why the voltages don't really change that much compared to changes in current.
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