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Date:         Tue, 18 Sep 2007 21:49:18 -0400
Reply-To:     Mike S <mikes@FLATSURFACE.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mike S <mikes@FLATSURFACE.COM>
Subject:      Re: 2 LEDs
Comments: To: David Kao <dtkao0205@yahoo.com>
In-Reply-To:  <317603.83320.qm@web82701.mail.mud.yahoo.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 08:59 PM 9/18/2007, David Kao wrote... >Your example of LEDs in serial is regular signal LEDs not for lighting >applications. Regular LED runs at 10 - 50 ma small current. Luxeon >LEDs are working at 0.5 - 0.7 amp. Your serial resistor is 390 ohm. >The one for two Lexeon in serial with 12 volt supply will be less than >5 ohm. Try to short one out and see the smoke yourself.

So when you said "If you don't have LEDs to play with come to grab from my bench. I have at least a couple hundreds of them now," you were talking about 3W Luxeon's? I'm impressed. I notice you totally ignored both the comment about current drivers and the manufacturer's statements.


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