Re: Unusual Characteristic [LOL]
From: Harry Dellamano (harryd_at_tdsystems.org)
Date: 07/29/04
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Date: Thu, 29 Jul 2004 21:01:38 GMT
"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message
news:itnig0he8tgu1dn84a7h491o4bmmbkh9fv@4ax.com...
>
> "White LED's have the unusual property of having a
> variable forward voltage drop dependent on current."
>
> ".. typically have a 3.3 volt drop with 15mA of forward
> current and a 3.8 volt drop with 75mA of current".
>
> From an application note of a Sunnyvale semiconductor company...
>
> Best regards,
> Spehro Pefhany
> --
Hi Spehro,
That is a resistance of 8R33 ohms. more than normal but not unusual. All
the more reason to drive them in constant voltage mode and reap other
benefits.
Hey Speh, you kind of disappeared when I was ragging on JT about his weak
Bar-Ba-Que. What happened?
Regards,
Harry
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