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Search: Keyword(s): ; Posts Made By: jedimasterben
Forum: Lighting Yesterday, 05:01 PM
Replies: 6
Views: 176
Posted By jedimasterben
XT-E white ...

XT-E white
https://lh5.googleusercontent.com/-ILGza3D4Sh0/U150UTj9sPI/AAAAAAAALRQ/zWqG4vGq8zE/s620/XT-E%2520white.png

XP-E colors...
Forum: Lighting Yesterday, 02:05 PM
Replies: 23
Views: 703
Posted By jedimasterben
I am not a fan of using dedicated red or deep red...

I am not a fan of using dedicated red or deep red LEDs. They are much too distracting. You're better off using a good quality high-CRI warm white to get your red.
Forum: Lighting Yesterday, 02:02 PM
Replies: 5
Views: 184
Posted By jedimasterben
Many manufacturers use Cree as a description and...

Many manufacturers use Cree as a description and not a brand name.

Why did they recommend the XR-E? Those LEDs are very, very old and inefficient. The XP-G2 and XT-E are the newer 'modern' Cree...
Forum: Lighting Yesterday, 02:00 PM
Replies: 6
Views: 176
Posted By jedimasterben
Get some warm whites. You need more red, not more...

Get some warm whites. You need more red, not more blue.
Forum: Lighting 10-14-2014, 03:19 PM
Replies: 3
Views: 145
Posted By jedimasterben
What light is it? If you mean the Marineland...

What light is it? If you mean the Marineland 'Reef Capable' garbage, then it's stupidly low intensity.
Forum: DIY 09-29-2014, 03:45 PM
Replies: 40
Views: 2,278
Posted By jedimasterben
https://lh5.googleusercontent.com/-jD0o0mrDtU8/U2L...

https://lh5.googleusercontent.com/-jD0o0mrDtU8/U2LpW--7bJI/AAAAAAAALZI/eU3aFpRLnrs/s512/er%2520mah%2520gerd.jpg
Forum: Lighting 09-16-2014, 02:42 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
I would not have drilled holes in the heatsinks...

I would not have drilled holes in the heatsinks at all - it may not seem like it, but you've actually reduced your overall cooling, as now as air travels through the heatsink it will have less and...
Forum: Lighting 09-15-2014, 12:19 AM
Replies: 6
Views: 345
Posted By jedimasterben
Whoa - that's awesome!

Whoa - that's awesome!
Forum: Lighting 09-13-2014, 03:20 AM
Replies: 147
Views: 2,495
Posted By jedimasterben
Lol

Lol
Forum: Lighting 09-12-2014, 09:36 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
If I run everything at 700mA, the LEDs use around...

If I run everything at 700mA, the LEDs use around 199 watts including LDD and HLG inefficiencies, bumped up to 1A that goes up to 273 watts. The heatsink with them at 700mA gets around 45C, at 1A...
Forum: Lighting 09-12-2014, 06:32 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
There is no such thing as cooling overkill. I...

There is no such thing as cooling overkill. I just wish there was something I could do with my Nanobox housing over my reef. The heatsink is 1.9"x34" and is like 1" tall, so it doesn't have a lot of...
Forum: Lighting 09-12-2014, 05:52 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
If the heatsink is 70-80C, then the LED die will...

If the heatsink is 70-80C, then the LED die will be much hotter, usually 10-20C depending on the LED C/W, PCB C/W, and heatsink C/W. An LED run at 40-50C, which is typical of a well-cooled array,...
Forum: Lighting 09-12-2014, 05:42 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
Think of the heatsink like a sponge. You can keep...

Think of the heatsink like a sponge. You can keep putting more water (or heat) onto it and it will continue to hold it. If you wring it out (or add a fan), then all of that water (heat) leaves.
Forum: Lighting 09-12-2014, 05:36 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
This is not correct - the heat put out into the...

This is not correct - the heat put out into the room will be higher no matter what, as the heatsink is only holding onto it until the fan can blow it off, the heat load is always the same.
Forum: Lighting 09-12-2014, 05:13 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
No matter what kind of heatsink you have or how...

No matter what kind of heatsink you have or how quickly the heat is dissipated from it, heat wattage is heat wattage, and it always goes somewhere. The reason your single exhaust feels so dang hot is...
Forum: Lighting 09-12-2014, 03:48 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
Can't beat physics.

Can't beat physics.
Forum: Lighting 09-12-2014, 03:45 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
If you're checking with a thermometer, say, right...

If you're checking with a thermometer, say, right above the LED heatsink or touching it, you're going to find it reads higher. Fluorescent bulbs spread their heat over their length (along with their...
Forum: Lighting 09-12-2014, 03:42 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
108w of power is 108w of power, 58w of power is...

108w of power is 108w of power, 58w of power is 58w of power.
Forum: Lighting 09-12-2014, 03:40 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
So where is that energy going, then?

So where is that energy going, then?
Forum: Lighting 09-12-2014, 01:39 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
Tell that to Philips, Cree, and every other LED...

Tell that to Philips, Cree, and every other LED manufacturer that is mass producing chips for interior lighting ;)


Your logic is backwards. Every watt of power you use ends up as heat no matter...
Forum: Lighting 09-11-2014, 10:48 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
See my edit ;)

See my edit ;)
Forum: Lighting 09-11-2014, 10:30 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
Your thinking is quite backwards. At 40% across...

Your thinking is quite backwards. At 40% across 26x LEDs, I think your LEDs are like 9v right? And on 1A drivers? If so, that's 400mA x 9v = 3.6 watts each, times 26 is 93.6 watts. Adding 13x more...
Forum: Lighting 09-11-2014, 06:43 PM
Replies: 147
Views: 2,495
Posted By jedimasterben
You missed the very important part of Steve's...

You missed the very important part of Steve's kits in that 100% of them are actively cooled with at least one strong pressure fan.

If you don't want to pay the money for a plate heatsink, then...
Forum: Lighting 09-11-2014, 01:36 PM
Replies: 10
Views: 375
Posted By jedimasterben
Acrylic lenses are from 70-85% efficient in pure...

Acrylic lenses are from 70-85% efficient in pure light transmission, but they focus the light so it more than makes up for that.

If you're going to DIY them, then I would look into using Bridgelux...
Forum: Lighting 09-10-2014, 05:28 PM
Replies: 10
Views: 375
Posted By jedimasterben
Yes :) Normally bracing is very small (would...

Yes :)

Normally bracing is very small (would be only a couple of cm wide) and on a tank that is 200cm wide you'd only have around three of those, or the tank would be 'eurobraced', which has a...
Showing results 1 to 25 of 250

 
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