"John Fields" schreef in bericht
news
On Sat, 28 Jan 2012 12:39:20 -0600, John Fields
wrote:


These curves are for a white LED with nominal and maximum forward
currents of 20 and 30mA, respectively.

---
"Connect-the-dots" works wonders. :-)

--
JF




Well, it tells what you and I - and several others - knew and told already.
If one realizes that this curves are typical values that may vary even for
LEDs from the same batch and also depend on temperature he'd have to agree
that constant voltage to drive a LED is bad engineering practice.

petrus bitbyter