7w Diodes

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S

Stoner Smurf

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Are there any lights out there using the 7w diodes? I remember reading an article about them like 6 months ago. Was curious if any light has them yet,
 
M

MTgrower

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Vision X uses 10 watt, but they are for off road/ industrial work. They have not made any grow lights. They are the nicest off road lights you can get. They SMASH anything made by light force, PIAA, Hella....all of them. Brightest lights you've ever seen.
 
S

Stoner Smurf

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Well that's pretty disappointing to hear that 10w diodes exist but no one is using them in grow lights yet. LED lights are such a promising technology but the light penetration with the 3w diodes sucks.
 
B

budfactorX

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to use leds properly you need 1 over each plant otherwise the results are depleted significantly, so you end up using more electricity and each led costs a fortune, surely there are better ways to tackle heat. i.e magnum xxxl's air cooled
 
A

AZPRO

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Leds are not the best

i had a 250w led and i did better with my 100 hps i feel like i got burned a long time ago maybe they are better now but will never happen again
 
C

Cereall

Guest
to use leds properly you need 1 over each plant otherwise the results are depleted significantly, so you end up using more electricity and each led costs a fortune, surely there are better ways to tackle heat. i.e magnum xxxl's air cooled

This is absolutely not true... Yes you need multiple smaller LED panels to cover the same space. I grow with 600w Magnum xxxls air cooled and 2 LEDs with 170w draw each replace 1 600w magnum with less heat and no need for an inline fan. Maybe you have dealt with leds 12-18 months ago but technology has gotten better recently and you dont need 1 LED per plant..
 
3

321abc

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Well that's pretty disappointing to hear that 10w diodes exist but no one is using them in grow lights yet. LED lights are such a promising technology but the light penetration with the 3w diodes sucks.
Dissapointing? Could you imagine the cost of such a panel? Look at what they are charging at the moment for 3w panels lol. Even if they were available, not many would buy them.
 
dirtyglovedank

dirtyglovedank

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Dissapointing? Could you imagine the cost of such a panel? Look at what they are charging at the moment for 3w panels lol. Even if they were available, not many would buy them.
i just paid 259 taxes icluded and shipping included for my 240 watt black star 3 watt cree led
 
C

Cereall

Guest
i just paid 259 taxes icluded and shipping included for my 240 watt black star 3 watt cree led

Blackstars are great bang for the buck. Not trying to knock your unit as I've seen many successful grows and a friend I know uses them. They are not all 3w or all cree chips, creea are the whites only I believe, the rest are brigelux I believe which are also a good manufacturer
 
K

Kobe24

Guest
http://www.nasa.gov/centers/marshall/news/news/releases/2011/11-023.html

NASA Light Technology Successfully Reduces Cancer Patients' Painful Side Effects from Radiation and Chemotherapy HUNTSVILLE, Ala. – A NASA technology originally developed for plant growth experiments on space shuttle missions has successfully reduced the painful side effects resulting from chemotherapy and radiation treatment in bone marrow and stem cell transplant patients.

In a two-year clinical trial, cancer patients undergoing bone marrow or stem cell transplants were given a far red/near infrared Light Emitting Diode treatment called High Emissivity Aluminiferous Luminescent Substrate, or HEALS, to treat oral mucositis – a common and extremely painful side effect of chemotherapy and radiation treatment. The trial concluded that there is a 96 percent chance that the improvement in pain of those in the high-risk patient group was the result of the HEALS treatment.

"Using this technology as a healing agent was phenomenal," said Dr. Donna Salzman, clinical trial principal investigator and director of clinical services and education at the Bone Marrow Transplant and Cellular Therapy Unit at the University of Alabama at Birmingham Hospital. "The HEALS device was well tolerated with no adverse affects to our bone marrow and stem cell transplant patients."

The HEALS device, known as the WARP 75 light delivery system, can provide a cost-effective therapy since the device itself is less expensive than a day at the hospital and a proactive therapy for symptoms of mucositis that are currently difficult to treat without additional, negative side effects.

The device could offer patients several benefits: better nutrition since eating can be difficult with painful mouth and throat sores; less narcotic use to treat mouth and throat pain; and an increase in patient morale – all of which can contribute to shorter hospital stays and less potential for infection, added Salzman.

LEDs are light sources releasing energy in the form of photons. They release long wavelengths of light that stimulate cells to aid in healing. HEALS technology allows LED chips to function at their maximum irradiancy without emitting heat. NASA is interested in using HEALS technology for medical uses to improve healing in space and for long-term human spaceflight.

Ron Ignatius, founder and chairman of Quantum Devices Inc., of Barneveld Wis., developed the WARP 75 light delivery system for use in the trial. The device uses the HEALS technology to provide intense light energy: the equivalent light energy of 12 suns from each of the 288 LED chips – each the size of a grain of salt. It is one of many devices using HEALS technology, developed in collaboration with NASA.

In the early 1990s, Quantum teamed with the Wisconsin Center for Space Automation and Robotics – a NASA-sponsored research center at the University of Wisconsin-Madison – to develop Astroculture 3, a plant growth chamber using near infrared HEALS technology for plant growth experiments on shuttle missions. Over the years, Quantum has worked to develop HEALS technology for use in medical fields, specifically with pediatric brain tumors and hard-to-heal wounds such as diabetic skin ulcers, serious burns and oral mucositis.

"With the help of NASA's Innovative Partnerships Program, Quantum Devices and its medical partners have been able to take a space technology and adapt it for an entirely different application to significantly help people here on Earth," said Glenn Ignatius, president of Quantum Devices. "This collaboration between NASA and commercial companies has spurred innovation that is touching millions of lives on Earth -- for the better."

The clinical trial was funded by NASA's Innovative Partnerships Program at the Marshall Space Flight Center in Huntsville, Ala. It included 20 cancer patients from Children's Hospital of Wisconsin and 60 cancer patients from the University of Alabama at Birmingham Hospital and the Children's Hospital of Alabama, also in Birmingham. The trial was the brainchild of Brian Hodgson, DDS, a pediatric dentist at Marquette University and Children's Hospital of Wisconsin – both in Milwaukee, Wis. Dr. Harry T. Whelan, Bleser Professor of Neurology at the Medical College of Wisconsin, served as the clinical trial principal investigator at Medical College of Wisconsin and Children's Hospital of Wisconsin.

Patients participated in the multi-center, double-blind, placebo-controlled research study – a way of testing a medical therapy where some groups receive treatment and others receive a placebo treatment that is designed to have no real effect. Participants were randomly placed in one of four study groups: low- and high-risk patients receiving the experimental light therapy through the WARP 75 device, and other low- and high-risk patients receiving light through a similar device without therapeutic effects. The low-risk patients were those whose chemotherapy and radiation treatment tended to cause mild or no mucositis and the high-risk patients were those whose therapy treatment tended to cause severe cases of mucositis.

Patients received the light therapy by a nurse holding the WARP 75 device – about the size of an adult human hand – in close proximity to the outside of the patient's left and right cheek and neck area for 88 seconds each, daily for 14 days at the start of the patient's bone marrow or stem cell transplant. During that time, trained clinicians assessed the patient's mouth and patients completed a simple form to indicate their level of pain.

"NASA is proud to be a part of the HEALS technology medical advancements that are improving the lives of cancer patients and providing new, innovative medical applications," said Helen Stinson, technical monitor for the NASA HEALS contract. "It's exciting to see the spinoffs from NASA’s science and technology initiatives continually improve the quality of life for people here on Earth."

The WARP 75 device is currently undergoing Food and Drug Administration premarket approval.
 
S

Spuzzum

71
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Blackstars are great bang for the buck. Not trying to knock your unit as I've seen many successful grows and a friend I know uses them. They are not all 3w or all cree chips, creea are the whites only I believe, the rest are brigelux I believe which are also a good manufacturer

Actually.. Bridgelux only makes whites.. Cree makes whites AND colours. And best place to get 'em.. Cutter Electronics in Australia. If you get the "regular mail" shipment, it'll take 14 days.. but at 1/2 the price of anywhere else. 20 Red 630nm XP-E's and 20 RedOrange 620nm XP-E's came to $145 CDN, tax included. that's less than $4 a piece. Ledsupply.. the cheapest in NorthAmerica.. wants between $6 and $7.50 for the same led's. ;)




http://i851.invalid.com/albums/ab80/thereal_spuzzum/Crees2.jpg




And do yourself a favour.. STAY AWAY FROM CHINESE CRAP!!

http://i851.invalid.com/albums/ab80/thereal_spuzzum/star.jpg

See the white "thermal paste"? Diode's supposed to be "reflowed".. ie: soldered.. to the star. Not just the pins, but the underneath as well.. it's a heatsink. Thermal paste will not transfer the heat as well as a soldered unit. So it won't last the lifespan it claims.




http://i851.invalid.com/albums/ab80/thereal_spuzzum/Stars.jpg

Back-to-back comparison.. see the difference in the thickness of the stars? The Cree star (top) is almost twice as thick. Chinese crap get hot when testing with a battery, while the Cree star was still cold to the touch... that's quality ;).


As for why nobody makes a panel with 10w led's? Too costly for one, or could also be less efficiency? Just because an led is 10w doesn't mean it's better. There are 3w led's with more lumens than 5w led's.. just depends on the manufacturer.

If you want a panel with 10w diodes.. make your own. It's really not that hard. I'm making my own fixture using the 3w Cree's, along with some LedEngins for 735nm IR and 410nm UV. And I'll be swapping the 660nm Chinese crap for 660nm LedEngins "after" I get this up and running.. the LedEngins are $9 a piece, and I need 44 of them. .. I'll make a facial panel with these Chinese crap later, or just keep them as backups. 660nm's supposed to be good for medicinal things.. like helping in the healing of cuts, acne, scars, etc...

Heatsinks will be from heatsink.usa.

http://www.heatsinkusa.com/


Cree does make 10w, and so does LedEngin. In fact, LedEngin even makes 40w led's. You just need to make sure what you're buying though.. most led's over 5w are "multichip". Single chip are better.




And for anyone trying to "justify" the cost...

Do you smoke cigarettes? Here in Vancouver, they're around $10 a pack. I quit 3 years ago, but if I was still smoking today, it would be 15 to 20 smokes.. basically a pack a day. That's $300 a month.. just in cigarettes! .. 3 months of smokes would pay for a pretty decent panel ;).

You can sub 6 packs of beer for smokes if ya want.. 1 season of Hockey Night In Canada, or 1 season of Major League Baseball.. there's another panel. .. Sub soccer and cricket for the European crowd :).

It's all how you look at it, and what you're willing to sacrifice to get what you want. Cigarettes and beers are short term.. gone in 1 day. Led panel will produce crops for at least 5 years, and possibly 10.. if the bulbs last as long as they say they will :).



Cheers.............

:passingjoint:
 
S

Spuzzum

71
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6 Band LED
Red LED: 630-660nm
Deep Spectrum Blue: 425nm
Ultraviolet: 380nm
Infrared: 730nm
HO White Cree: 12k

In the videos, he specifically says they use Crees. In fact, he bragged about it. Cree doesn't make 660nm to begin with, nor do they make 380nm or 730nm. They do make 425nm, 630nm and White 12K though. And they don't make 2w led's.. either 1.75w (xr-c), 1.5w (xp-e) and 3w (xr-e).


So the only "Cree" in it for sure, is the "HO White Cree 12K". "Maybe" the 630's, and "maybe" the 425's.. but if the panel's only $200, I doubt it. Cree's aren't cheap.


:passingjoint:
 
B

budfactorX

33
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if you run two set ups side by side and have 1 300w led equivalent to 600w and in set up 2 have a 600w hps put 4 ladies in each and grow the same strain, under the same conditions using the same nutes and growing medium you'll get much better results off the hps as the light is much more penetrative than that given out from the leds. your yeild is significantly reduced. try a side by side experiment for yourself and get back to me.
 
B

budfactorX

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and if it has 10watt leds then surely its not saving any energy. a small panel has 90 leds in it now times that by the 10watts each diode uses thats 900watts per panel. a large panel may have up to 200 leds in it equal to 2kw which isn't gonna spread the 3 metre square area 3 600's will
 
S

Spuzzum

71
8
if you run two set ups side by side and have 1 300w led equivalent to 600w and in set up 2 have a 600w hps put 4 ladies in each and grow the same strain, under the same conditions using the same nutes and growing medium you'll get much better results off the hps as the light is much more penetrative than that given out from the leds. your yeild is significantly reduced. try a side by side experiment for yourself and get back to me.

See, that's the issue to begin with.. led's should be at least 75% of what you were using with hid's. 50% is bs.

As for "penetration".. depends on the led's lumen output.. not the wattage. A 1w Cree XP-E Red 630nm has 45.7 - 62 Lumens @ 350mA.. bin depending. "Dorado 1w 624nm" has 32 Lumens @ 350mA. Cheap Chinese has even less.
http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&Page2Disp=/leds.htm

Obviously more lumens = more penetration. But even with a 250hps in my 18" x 30" SoG cab, maximum 24" plantlets.. I still needed to "shade leaf".. strategic removal of fan leaves, but only when the node has enough growth to sustain itself without a fan leaf... ie: growth has enough foliage to collect the energy it needs.

And just because the manufacturer used a certain percentage of red to blue.. did he take into account that blues traditionally put out 1/2 as many lumens than the reds? That's where using 1w and 3w diodes on same panel actually makes sense. 1w reds set for 100Lm a piece, followed by 3w blues set at 100Lm a piece. .. That may be an issue with some panels right there.. the ratio should be x amount of red lumens compared to x amount of blue lumens.. not x red stars compared to x blue stars.



Cheers............
 
L

Lost

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Why do people waste their time? I guess you see idiots putting 3k body kits on honda civics, so why should this be any different.
 
MARTA

MARTA

235
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Why do people waste their time? I guess you see idiots putting 3k body kits on honda civics, so why should this be any different.

"You must spread some Reputation around before giving it to Lost again."
 
B

budfactorX

33
8
Why do people waste their time? I guess you see idiots putting 3k body kits on honda civics, so why should this be any different.

what do you mean? waste time on leds?? if so tell me about it, i have sold many different led systems and have yet to hear a good response from someone used to HID's. they just don't have the ooomph
 

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