help with Cree super bright LEDs

jarthel · 1st December 2009, 01:13 PM

DealExtreme: $5.36 Cree XR-E Q5 Emitter on Premium Star (228LM at 1A)

According to that website, I get the the most lumens if the LEDs is being supplied with 1A.

It's easy enough to connect them to a current source regulator. it seems the LED has a Vf of 3.7V@1A. does that mean I require 3.7V for every LED I connect in the series? e.g. 10x LED = 37V?

thank you very much for the help

djQUAN · 1st December 2009, 01:38 PM

yup.

jarthel · 7th December 2009, 02:43 AM

thank you

1st December 2009, 01:13 PM	#1
jarthel diyAudio Member Join Date: Jan 2002 Location: somewhere in Australia	help with Cree super bright LEDs DealExtreme: $5.36 Cree XR-E Q5 Emitter on Premium Star (228LM at 1A) According to that website, I get the the most lumens if the LEDs is being supplied with 1A. It's easy enough to connect them to a current source regulator. it seems the LED has a Vf of 3.7V@1A. does that mean I require 3.7V for every LED I connect in the series? e.g. 10x LED = 37V? thank you very much for the help

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1st December 2009, 01:38 PM	#2
djQUAN diyAudio Member Join Date: May 2004 Location: manila	yup.

7th December 2009, 02:43 AM	#3
jarthel diyAudio Member Join Date: Jan 2002 Location: somewhere in Australia	thank you

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