Help with an LED circuit

Okay Hopefully there is someone in here that can help me. I have 6 super bright (blinding) 3 watt red bridgelux LEDs I want to have them as supplemental lighting around the foliage to my current Fluorescent lighting. Here is what I got

View attachment 2291287View attachment 2291289


I have a wall plug transformer that outputs 12v AC at 1 Amp I need help building a circuit to power these leds. I know I need to rectify the AC current to DC current and I need help with that too.

If anyone can help me with making the circuit I would be very grateful.

as for the 12V AC doesn't that mean I have 16.96 Peak voltage? Because the 12V is the RMS and the 16.96V is the actual voltage?

Bridgelux makes red LEDs?

News to me....

I got them from ebay and contacted the seller and he said bridgelux and i have searched many places and people say they do but they don't advertise it on their site

Oh and thank you for the very productive post

As far as I know, Bridgelux only makes blue and white LEDs. The only "red" Bridgelux LEDs I can find after looking through Bridgelux's website, Digikey, Farnell and Newark websites, the only ones that came up was after a google search, and those are from Chinese Alibaba and Ebay sellers, and I promise you those are not real Bridgelux LEDs.

If you can get a close-up pic of the die, I might be able to identify what the LED actually is, then it'd be easier to answer your original question.

How close is a close up??

Anyway besides that do you have any information that is actually related to my question? Like how to rectify the 12v 1amp transformer to DC?

I have some LEDs on hand here that aren't soldered yet, I'll take some pics and show you what I am talking about. I can post them in about 10 minutes.

jpeg666 said:

How close is a close up??

Click to expand...

Without knowing the exact input requirements of the LED, it is difficult to determine even if the driver you have will work. 1 amp seems like a little much for regular Chinese 3w LEDs.

jpeg666 said:

Anyway besides that do you have any information that is actually related to my question? Like how to rectify the 12v 1amp transformer to DC?

Click to expand...

If you can get a pic of the die to where you can see the pattern, it's easier to identify the actual LED.

I can't get a pic of the die...I have no microscope or mag glass. But I can see that is has 2 tiny copper wires connecting to the center of the die

jpeg666 said:

I can't get a pic of the die...I have no microscope or mag glass. But I can see that is has 2 tiny copper wires connecting to the center of the die

Click to expand...

Hey jpeg. You'll find that all of the dies have 2 gold wires coming from them.

Well, based on what I know, here's my answer:

Being that the seller said "3w red Bridgelux", the vehicular equivalent to a Chevy Taurus with a Nissan V6, the quality probably isn't the best.

Taking that into consideration, the typical "3w" red no-name Chinese LED can handle anywhere from 2-3v, and anywhere from 700-1000mA.

If you have proper cooling, a safe bet would be 2.4v, and 500mA-600mA.

You can buy DC drivers for pretty cheap, same kind of seller that sold you your red Bridgeluxes. Maybe $10 each. Hell, there's RCA plug in ac/dc adapters at Wallymart for about $8. Those are good for 5-6 2.4v LEDs.

Okay considering I can get a ac/dc transformers from walmart how would I wire that to my LEDs? I want to push them to about 700mA No matter what they can handle I'm shootin for 650-700. The seller said they max at 1000mA but I'm sure they don't have a very long life at that current.

If I were to get one of those DC adapters how do I wire the circuit? Do I need to get some drivers from the seller to hook up to the DC adapter? Or can I take a trip to radio shack and spend a couple dollars and make my own constant current circuit.

Take a look at his instructable. http://www.instructables.com/id/Circuits-for-using-High-Power-LED-s/step6/The-new-stuff-Constant-Current-Source-1/

Can I make one of those super simple circuits to hook up to that cheap universal adapter to run my LEDs?

These are cheap ass China LEDs check out the sellers response!

Dear ledtoplights,

Do you know what company manufactured these High powered LED's ? I am just wondering so I can find more technical in depth specs about the LED.

- jalt9369


Here is his response

Dear jalt9369,

Hi,
We used Brifge Gelux 45x45 mil chip to assemblied in one of LED factory.
Thanks,
ledtoplights

- ledtoplights



Here are the specs for the LEDs I have

6 x 3W High Power Red 660nm LED Specialist for plant, DIY item.
Red special made LED for plant lights, Many people use in insects, reptiles and vegetable or flower seeding development.
We recommended to use special Constant Current power supply (for LED special use) to keep the LED working stable and last for long time and please set up all high power LEDss on heat sink.

Please check our other auction item constant current power supply and heat sink in e-bay.

Specification:
Emitted Color: red @ 660 nm (wave length)
Voltage : 2.3V~2.8V
Current : 650mA
View Angle: 120 degree.
6 piece red LEDs.

the circuit you are looking for?


a constant current driver is a better way as you see on the right side

Chronikool said:

Hey jpeg. You'll find that all of the dies have 2 gold wires coming from them.

Click to expand...

except the golden dragon from Osram

• Brifge Gelux​
  
  
  
  

haha I guess he wasnt lying on the phone when he said Brifgelux with the thickest accent ... haha too funny

guod said:

the circuit you are looking for?
View attachment 2291561

a constant current driver is a better way as you see on the right side

Click to expand...

Now this is the kind of input I am looking for! Thank you so much. Also earlier posts made me think I don't have to run it on a 12v 1 amp PS, I can go buy a cheap AC/DC adapter somewhere. Do you think I can make my own constant current driver? Like in the instructable I posted?