fun with high power leds.

Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=113097
Printed Date: May 03, 2024 at 4:24 AM

Topic: fun with high power leds.

Posted By: firstrax
Subject: fun with high power leds.
Date Posted: April 12, 2009 at 8:47 PM

Been thinking about replacing the Acura headlights with leds but I don't want a large array. After many attempts with SEDs I think I have a winner. I think three each side should do it. If anyone is interested in the drive circuit I'll post a schematic when I get the exact values dialed in.

posted_image

Answers to the obvious questions:
Seoul Semiconductor P7 led
Khatod 28mm reflector.

Replies:

Posted By: babsgirl1
Date Posted: April 14, 2009 at 7:35 PM

i would like to know more when you get it up and running. where did you get the leds?

Posted By: absolutalchemy
Date Posted: May 07, 2009 at 10:16 PM

where did you get this setup? I 'm sure i can find many uses for it!!!!

Posted By: firstrax
Date Posted: May 13, 2009 at 8:37 PM

absolutalchemy wrote:

where did you get this setup? I 'm sure i can find many uses for it!!!!

I made it. Its what I do.
I'm working on REV.B right now. This one is going to slay.
posted_image

Posted By: icearrow6
Date Posted: May 13, 2009 at 11:43 PM

WOW, that is awesome! They sure do look powerful enough...can't wait for your diagram.

Posted By: absolutalchemy
Date Posted: May 19, 2009 at 8:15 PM

im dyin to get my hands on these, they would look sick as some fog lights, whenever you're done let me know!!!

Posted By: firstrax
Date Posted: May 20, 2009 at 6:54 PM

absolutalchemy wrote:

im dyin to get my hands on these, they would look sick as some fog lights, whenever you're done let me know!!!

It will take some time. These are expensive LEDs and I dont want to publish anything until I'm sure the results are repeatable.

Posted By: stupidpig
Date Posted: June 03, 2009 at 2:57 PM

How big the heatsink needed to be with a couple of this? I'm working on a couple Prolight 3W and they are hot even with a big heatsink, I guess yours probably even hotter.

Posted By: firstrax
Date Posted: June 06, 2009 at 9:28 PM

stupidpig wrote:

How big the heatsink needed to be with a couple of this? I'm working on a couple Prolight 3W and they are hot even with a big heatsink, I guess yours probably even hotter.

By the numbers its 10 square inches of heatsink surface area per watt.
I machined a small heat sink for 4 leds that will have machine oil circulated through it to a small remote radiator.

posted_image

Posted By: plainbroke
Date Posted: March 21, 2010 at 12:08 PM

How much light will something like this throw? What kind of $$$ are we talking to build these?

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Jeff

Posted By: i am an idiot
Date Posted: March 21, 2010 at 3:09 PM

Jeff, he has not logged on since June of 09, I just did not want you spending tons of time checking here for an answer.