BuckPuck-D-E-1000

[Roland Gama]

Hello all of you fellow enthusiasts,
My first posting on the forum and I hope one of you can help me.
I am interested in using 7 cree MC-E leds in a hand held spot light arranged with one in the centre and six around it powered from a 12 volt 7 ampere battery.
I am using the BuckPuck-D-E-1000 driver in the project.
I can see from the luxeon website that a pair of 3 leds wired in series is perfect. However that makes a total of 6 leds.

My question is how do I wire the 7th one? Can I paralled just one led in the same circuit? Or rather will that cause any detrimental effect?

Thank You : Roland.

 

[Jarl]

An MC-E is 4 LED dies. So 4x7=28 LED dies- the equivalent of 28 luxeon LED's as shown on the website! You need more than one driver to get anywhere near the power needed to run those properly. Assuming the battery is capable of the load, I recommend 3 shark boards, each running 2 MC-E's in parallel wired with the 4 dies in series with the drive current of the shark at 1.4A (each die then sees 700ma), and then one more shark with the drive current at 0.7A wired to one MC-E with the dies in series.

Unless of course, you want to use single die LED's in which case two strings of 3 LED's would be best. Sticking the final LED in parallel will just get messy, unless you give it it's own dedicated driver.

 

[Roland Gama]

Thanks for the info Jarl.
Now I am better able to comprehend.