Superbrite Blue Leds Group Buy

[clamm]

I Am Still, But I Think We Can All Get Them Cheaper From 3m Instead Of Ordering...so Ill Still Do It With Plans To Get Them From 3m Unless He Is Out...right Now We Have A Need For 30...if We Get From 3m They Are .75 Each If From Lc They Are 1.50 Each...

 

[Matt L.]

Armando,

I'm reading through my post. I can't find where it says I volunteered...

Clam M.,

So basically, the wiring schematic would look something like this?

Forgive me, it has been ages since I took E&M,

Also, just to make sure, what kind of piower supply do I need? Also, what resistance do I need?

Matt

 

[Armando]

is the model that 3M is selling the superbright/super duper ones? if so, i'd like to get a few. more than a few.

 

[clamm]

i DONT THINK THEY ARE THE SUPERBRIGHTS, HE JUST SAID THAT ARE LED'S IN THE ACTINIC LIGHT RANGE...AWAITING MORE DETAILS...

AND MATT...YOU HAVE IT DRAWN FINE BUT CURRENT FLOWS NEGATIVE TO POSITIVE SO YOU WANT THE RESISTOR ON THE OTHER SIDE SO I GUESS THE RESISTOR GOES TO THE CATHODES WHICH MAKES SENSE...THE WAY i DESCRIBED IT EARLIER WOULD BE REVERSE BIASING THE DIODE AND i DON'T THINK THAT WOULD WORK. SO LOOKS LIKE YOU HAVE IT CORRECT JUST MOVE THE RESISTORS TO THE RIGHT SIDE BEFORE THE DIODE.

 

[clamm]

RESISTORS SHOULD BE 1/4 W 150 OHMS. IM GOING TO PLAY AROUND WITH THIS AND SEE IF SMALLER ONES WILL BURN OUT THE BULBS...BUT 150 OHMS IS SAFE.

300mA dc supply is needed 9V

 

[PenMan]

I can get desktop style regulated 3.3V @ 2A power supplies. I am running my strip of LED's on these. The power supplies are $5.00 each and they do require an IEC 320 line cord (like a computer input cord). I sell these is lots of 5000. They are regulated output supplies and will produce 3.3V from no load to full load. Some of the cheaper LED lights use unregulated linear supplies and the voltage will vary from 3 to 6 V depending on the load. I can bring one Saturday to the meeting if anybody would like to see one.

 

[clamm]

penman is correct. on some transformers the output will varry based on load. Mainly with cheaper ones...still the one the guy used was a varriable from 1-9v and it worked fine, so I don't see any problems there.

 

[Armando]

penman i'd like to get one.

 

[DSOUZA]

How do these compare with the superlumination triple LED lights that are waterproof, 100 degree angle, and cost $5? All they need is the ac/dc converter from walmart (approx$10.00).

I have two of these and it is bright as I want it in my 135g.
http://superlumination.com/fixtures.htm

Dara

 

[clamm]

I think the individual led's themselves still have a 30-35 degree angle but when placed properly in relation to each other you can get 100 degrees...at least that how I understand it. But anyway, I really dont know the difference, I know that the ones im getting aren't waterproof unless you build the case and seal it yourself.

 

[nunofs]

I can also vouch for the superlumination LED fixtures... they're pretty bright and already include the resistor inside the fixture, as Dara said all you need is a converter... and if you get an adjustable converter you can vary the intensity of the moonlights to match your preference.

Nuno

 

[clamm]

from the picture on the website, i don't like how blue they are... i want a color more like the color shown in the website I listed. But its all a manner of preference. you are right about the 100 degrees I guess each diode is 100 degrees viewable. so in that respect they are nice. I just don't like the color as much.

 

[nunofs]

Casey, you can't really put too much faith on either of those pictures... with digital pictures it's very difficult to get accurate color rendition, especially on something that's illuminated by a blue light due to changes in white balance... you should look at the peak wavelength instead -- they are both listed as being 470nm, so should be very similar in color.

Nuno

 

[clamm]

humm...interesting

humm good point. i already told 3m i would take some of his...so im going to give it a try.

 

[Armando]

nuno got pics?

 

[nunofs]

I can take and upload pics tonight... the tank still only has live rock, so there won't be any fluorescence from corals, but it should be enough to give you an idea of how it looks.

Nuno

 

[3mrhythm]

if you want to buy alot from me i can get you guys 100 6000mcd 3.8v 470nm leds for 40$... add one cent each for resistors so you can run 12v input... let me know! it'll take a couple weeks to get them all

 

[3mrhythm]

i can even mail them out prolly for free .. i can figure in the stamps to that price ... no more than a 4 person split per 100 pack though.. i can see what i can do for large orders 500+ led

 

[3mrhythm]

i can do the 100 packs at 40cents a piece ..(the 40$ for 100)

or

500led for $130


Specification

Emitting Color: Blue

Luminous Intensity: 4000mcd@20mA TYP (LED is current driven, if used with 30mA, they're 6000mcd)

All LED should rated at 20mA only, if seller claims it's rated at 30mA or even 50mA, they actually overdrive the LED for higher mcd rating number. Try my LED with 50mA you will get about 10000mcd, however, it means the LED will die faster

Viewing Angles: 30 degree ( 30 degree's 4000mcd = 20 degree's 5000mcd!! )

DC Forward Current: 30mA Max

DC Forward Voltage: 2.8-3.8V

Wavelength: 465-475nm (right about the same as an atinic bulb)

Reverse Voltage: 5V

Soldering Temperature: 260?C for 5 seconds

 

[3mrhythm]

i might be able to order 1000 but i need to check on my shipping price