Walmart 11w globes and Cree 9w globes for test comparison

[Abiqua]

Bought 4 bulbs today for my microgrow. All are 2700k, I thought I would share some photo's. Kind of cool.

[Definitely taking the Wally bulbs back!][Though I had no complaints, just that the Cree is that much better]

You can clearly see the difference in light patterns. GV's are sno-cone pattern's, not bad for a spotlight....

Not too much difference in overall size, although the GV is a lead brick 1.5x the weight of the Cree.

1 of each type LED bulb, plus two very small 8 and 13w cfls' in the back. So really only 40w's here in this pic, still had to wear my glasses to look at them.

 

[Abiqua]

What's the deal with the coating on the Cree bulb's? I already got shit stuck to them, lol, wtf?

[It reminds me of those sticky hands you could throw at people for a day and then they weren't sticky....just a blob of latex plastic, that's what the coating reminds me of........]

 

[Abiqua]

I am almost thinking of tearing down the Walmart bulbs and hardwiring the sockets to some 730nm leds from the Gv's driver and base.

Also a good article on the Walmart bulbs where he tears them apart to reveal them....
http://www.designingwithleds.com/walmarts-sub-10-led-bulb-flickers-flashes/

 

[hyroot]

Led magazine gave the WalMart ones a bad review. Philips and GE has some good ones out .

 

[Abiqua]

Led magazine gave the WalMart ones a bad review. Philips and GE has some good ones out .

I am not out hunting, I am just taking what I can get. Suspiciously, in one of the articles I read, it mentioned that these Wally bulb's were being "produced" by GE but from TCP in china. Kind of interesting there.

I will just stick with the Cree bulbs, might even scrap my DIY LED bars for the time being too! If I come across the phillips or GE labels, I will def have to check out.

Right after OP, I was at the grocery store looking at the same Feit bulbs for $14 apiece, ha ha. The spotlight version was 750 lumens @ 22w's?

 

[hyroot]

You will definitely have good results with the crees.. Its good you are doing a comparison too... Not enough of that here

the philips a19's are at home depot, around $35 for 4. same cri and lumen output as cree. but 10.5 watt and a 6 year warranty. Philips are good. They make lumileds... the Ge ones are at lowes and sears... I haven't really looked at those...

walmart bulb article

http://ledsmagazine.com/features/10/10/12


Ge article

http://illuminationinfocus.com/products/39390
http://illuminationinfocus.com/news/4/9/12

Philips article

http://ledsmagazine.com/news/9/12/10

 

[Abiqua]

You will definitely have good results with the crees.. Its good you are doing a comparison too... Not enough of that here

the philips a19's are at home depot, around $35 for 4. same cri and lumen output as cree. but 10.5 watt and a 6 year warranty. Philips are good. They make lumileds... the Ge ones are at lowes and sears... I haven't really looked at those...

walmart bulb article

http://ledsmagazine.com/features/10/10/12


Ge article

http://illuminationinfocus.com/products/39390
http://illuminationinfocus.com/news/4/9/12

Philips article

http://ledsmagazine.com/news/9/12/10

Good info Hyroot, thanks!

What makes me mad is this morning I checked online and the Cree's were $7.97 dropped from $12.97 and still are. But in store they were $10.

The price is still a little high for me on bulbs, I just picked up a new cabinet to mess with and I think Bridgelux Vero's would accent it nicely. I could cram probably 20 Cree's into the space, but I don't think I can afford even 10!


The Cree 6w 2700's are marked down to $5 as well, they would make some good side lighting possibly.

 

[Abiqua]

The Walmart bulbs are FUCKING hot to the touch, just about burned a finger, even with a fan pointed at it. Easily 10x the heat, that the Cree's put out.

No bueno.

 

[hyroot]

What makes me mad is this morning I checked online and the Cree's were $7.97 dropped from $12.97 and still are. But in store they were $10.

The price is still a little high for me on bulbs, I just picked up a new cabinet to mess with and I think Bridgelux Vero's would accent it nicely. I could cram probably 20 Cree's into the space, but I don't think I can afford even 10!


The Cree 6w 2700's are marked down to $5 as well, they would make some good side lighting possibly.[/QUOTE]





Cree was the only one rocking those lights for 6 months. Now 20 other companies have released them. Now its a competing market. I bet within the next year they will be at cfl prices..

They are still 12.97 in my area even online....

The philips are still looking better to me cost wise and I was wroing abbout the cri. Its higher than cree 85 cri

http://www.usa.philips.com/c/led-light-bulbs/led-10.5w-60w-medium-base-e26-bright-white-dimmable-046677424893/prd/en/;jsessionid=60B5FCE837323BCF4656EF1A12A48CC7.app102-drp4?t=specifications

 

[Abiqua]

I agree Root! That's what I was thinking last night........... is that now, with everyone at each other's throat to produce consumer LED bulbs, the price fixing strategy seems to be DROPPING fast!

Im off to Depot again this morning [took back Walmart bulbs]. Definitely going to keep my eye on the Phillips bulbs, might even buy a couple for another side-by side comparison.

 

[StellerKeller]

Nice cabinet, Abiqua. Cool avatar, too.

You seem to be growing the way I would want. I grow in a closet with CFLs, 100 grams last me about two years.

Let me ask you, do you use LED bulbs the same way you can grow with CFLs? The closer the better? The more the better?

My problem is I grow in the winter and often I have trouble keeping the temp near 80F, how do LEDs compare with CFLs in regards to heat output?

Thanks for your reply.

 

[Abiqua]

Nice cabinet, Abiqua. Cool avatar, too.

Thank you kindly! Everyone keeps changing their pic and I just keep playing along, lol.....the cab is a tinkerer's dream and the stable person's nightmare. It is in V 6.0 right now and I built it about a year ago. [Also received two new cabinets to rebuild, more LED goodness ahead!]

You seem to be growing the way I would want. I grow in a closet with CFLs, 100 grams last me about two years.

Let me ask you, do you use LED bulbs the same way you can grow with CFLs? The closer the better? The more the better?

My problem is I grow in the winter and often I have trouble keeping the temp near 80F, how do LEDs compare with CFLs in regards to heat output?

Thanks for your reply.

Still early, but put out 10w of LED is as bright or brighter than 23-26watts of cfl, to the eye any way. But the Cree's and now the Phillips 10.5w 3000k's, put out way less heat than the cfl's.

My babes are doing well and even with ambient @74F and my intake half plugged the Cab temps are still around 23C [74F], so yes a little lower than I like at 25-27C. However, I do have a 80mm intake fan going but only on 6v @.4 Amps or something. So that cools it down without the Carbon filter over it.

 

[hyroot]

There was an issue with a couple people having to change their avatars in the part cup comp thread. Me n red are somewhat competing for funniest avatar. He has a weird sense of humor.

those plants are looking really happy and healthy. Good work.

 

[SupraSPL]

The frosted globes reduce the photons by 15-20%. The feit bulb (walmart) I have had a glass globe so I just shattered it carefully. Also you can point the LED directly at the canopy which will increase the photons again. They work great

 

[hyroot]

The frosted globes reduce the photons by 15-20%. The feit bulb (walmart) I have had a glass globe so I just shattered it carefully. Also you can point the LED directly at the canopy which will increase the photons again. They work great

View attachment 2884075

no they don't. Tags took par measurements. With globes and with out and nothing changed. The Cree TW have a phosphor coating on the globes. from the side within 3 inches they hit 800 umoles, beyond that the par drops to 35 umoles With a reflector. They have 450 umoles at 12 inches away with a single bulb.

feits are different from walmart. Walmarts have cheap plastic base. Feits are ceramic. The feits aren't very good. They can't handle temps higher than 85 degrees internally. They then fail.


nice aloe plants. I have a couple outside.

 

[Abiqua]

There was an issue with a couple people having to change their avatars in the part cup comp thread. Me n red are somewhat competing for funniest avatar. He has a weird sense of humor.

For the moments that count!

those plants are looking really happy and healthy. Good work.

Thank you, if they are happy, im happy. These bulbs seem to really add not just act as a "replacement". Getting a 4 pack of Phillips 3000k in the next day or two and new cab this weekend. 4x Crees and 4x Phillips 3.6sq. ft. Stoked!

The frosted globes reduce the photons by 15-20%. The feit bulb (walmart) I have had a glass globe so I just shattered it carefully. Also you can point the LED directly at the canopy which will increase the photons again. They work great

View attachment 2884075

Funny you should mention the globe blockage and thanks for chiming in.

I was wondering about taking the globe off the cree's, enough actually to start a separate thread about it, so maybe you can add to this.....

I have seen a few people do it, but nobody seems to be actually using the one's they de-virginize. What's up with that? Did I miss it? Going to start using a set of phillips bulbs too and I wonder what the spread is without the glass.....hmmm.......to globe or not to globe?

 

[RedCarpetMatches]

Taking the globe off does several things. A) creates a potential shocking hazard B) diodes are susceptible to damage C) two fit in white reptile reflectors perfect with a y socket and D) gives you a little lea way to play with vertically. I'm wondering if you had those bulbs in a DIY horizontal reflector "beer can style" or just in vertical hoods. Anyway nice pics!

 

[SupraSPL]

There is no way to pass photons through a diffuser without a loss and the loss is significant especially at high angles. Some percentage of the photons will be converted to heat and a phosphor coating would make it even worse. It also reflects and scatters the photons which reduces one of the major advantages of LEDs which is directional output. The only reason the globe is there is to make it more visually appealing to humans.

A reflector on the other hand can recover stray photons and guide them to the target. Some of those photons are lost to heat and diffusion in that process but ALL of them would be lost if the reflector were not there.

The little feit bulb I have have consumes 1.7W and has a Vf of 2.87v DC certainly not a shock hazard and the 110v section is no more exposed than the base of the bulb itself. As far as damage to the diode surface, they are very tough, water resistant and can be cleaned with any crude method. If you care about efficiency, I say off with the globes.

I agree that they run them too all too hot, that is why we use these instead

 

[Abiqua]

450 umoles @ 12 inches? I believe it mine are just fine 8" away, now I have a whole nother set of questions of thoughts.....

I might try and take one or two of the Globes off just for shits and giggles, but it sounds like I don't need to fuck with them.

Nice light Supra! Thanks for chiming in too....guess those are panels from your 200w DIY?


I want do Bridgelux vero Light bars. 24" bars per 1x2, each Vero powered by a Meanwell LDD and my power supply. I just found out my PS2 [thats a mofo'in Playstation2] Power Supply does 8A @ 12v, fawk yeah!

These LED bulbs are nice stop-gap though but def. not the means to an end personally, but they are addicting.

 

[Abiqua]

Anyone have a list of potential types of reflectors including the reptile reflector suggestion? I couldn't find one yet?

Grazie!