Led bulbs

Cedrus

ledbulb wrote: »

Can't find data sheet for GU10 base but that's the same bulb with differente base. They come with 3 years guarantee.

It can't be the same bulb with a different base, GU5.3 is 12V and GU10 is 230V. They might look similar but you'd be trouble if you managed to plug one in.:eek:

On a quick look they do seem to be going in the right direction Cree are a good name and 3 decent LED cells is much better that the 30-60 ****e cells that have been the norm in cheap LED lamps, BUT, I can't see how 3 x 1.5 W adds up to 6W

The lifetime is given as 35000 hours but is that at L90 or L50? Without stating the Lumen depreciation, the hours are meaningless.

Peanut

Phibsboro wrote: »

Seeing this thread inspired me to look again, one of the sites listed above mentions a dimmable CFL from Megaman. But then I ended up on that product's Amazon page and had a look at the comments - this whole area just seems to be a scam! Is anything other than halogen really suitable as a dimmable in-ceiling light source for a domestic situation?

Search for "auraglow" on Amazon, they seem to get good reviews, and also have dimmable GU10.

ledbulb

I like to said that about laser lights not led lights

paddy147 wrote: »

So how can you reccomend lights that are not even on the market or for sale???
No price either,even though a price has been asked for.

I dont understand that and how you can say that they are better than trusted brands that are on the market and in use.

I dont understand how you can say this???

paddy147

ledbulb wrote: »

I like to said that about laser lights not led lights

You have failed to answer me though.

I asked you for a bulb comparable to a Philips Master 4W 2700k "GU10" 40 degree spread and dimmable.....(not the MR16 you posted)

I asked you for a guarentee.

I asked you for a price too.

ledbulb

I think nobody who ever have experience with this kind of bulbs will belive in 320 lm, o the market is kind of lumen race most of the time fake lumens.

coalminer wrote: »

In response to ledbulb you can get them here from 9.71 euro each http://www.lightrabbit.ie/glass-covered-21-x-5050-smd-gu10-led-bulb-3-5watt-320-lumens.html

I think these are the most popular type as i have seen them in lots of places.

As for Captain - i think you have lost the plot coz your figures are now made up. You have confirmed that the lumen output is the same for 50 Vs 5 watt LED bulb so that is surely a 90% saving???

BTW. LEDs produce approx. 90 Lumen per watt and CFL are only 50 Lumens per watt so your numbers are flawed!

So to summarise:
1) LEDs are more efficient
2) They give better light
3) They look better
4) They come in more fittings
5) they last over 2x as long as CFL
6) Almost forgot this one - they don't contain harmful metals such as mercury
7) Typical return on investment is under a year.

I really cant see Captains case for CFL - it think he must have been poisoned by eating one ;-)

ledbulb

I'll give you all answers but not tonight . good night

paddy147 wrote: »

ledbulb wrote: »

I like to said that about laser lights not led lights

You have failed to answer me though.

I asked you for a bulb comparable to a Philips Master 4W 2700k "GU10" 40 degree spread.....(not the Mr16 you posted)

I asked you for a guarentee.

I asked you for a price too.

paddy147

ledbulb wrote: »

I'll give you all answers but not tonight . good night

Why cant you reply to me now??

What is so hard in answering my 3 simple questions here???



PS-You were very quick to tell me that my Philips GU10s are not the best and are old,but you aint so quick to reply to me now and answer my questions.

cram1971

paddy147 wrote: »

PS-You were very quick to tell me that my Philips GU10s are not the best and are old,but you aint so quick to reply to me now and answer my questions.

The Philips Master bulbs were good in their day but even Philips have replaced them with a better bulb note sure of the price

http://www.philips.ie/c/-/led-4-w-20-w-gu5.3-cap-warm-white-8718291192800/prd/;jsessionid=447234E5B5C79644AB33AF2327DC1352.app102-drp2?t=specifications

Re op and price the guy is thinking of opening a business and perhaps reluctant to release a price until he can research the market. Ant hence the original post.

A market in my opinion already fairly flooded.

ledbulb

They use the same led chip for gu10, 6W because they measure all lamp not only chip they use, so all lamp use 6W

Cedrus wrote: »

It can't be the same bulb with a different base, GU5.3 is 12V and GU10 is 230V. They might look similar but you'd be trouble if you managed to plug one in.:eek:

On a quick look they do seem to be going in the right direction Cree are a good name and 3 decent LED cells is much better that the 30-60 ****e cells that have been the norm in cheap LED lamps, BUT, I can't see how 3 x 1.5 W adds up to 6W

The lifetime is given as 35000 hours but is that at L90 or L50? Without stating the Lumen depreciation, the hours are meaningless.

ledbulb

paddy147 niviss - 3 years guarantee-50000 hours lifetime- 12,30 eur

ledbulb

Look at this bulb this is 5W guarantee 5 years

Macha

[mod] People, this is not adverts.ie. Keep your discussion to a general discussion of light bulbs. [/mod]

ledbulb

Thanks, i have my business but this in this place we can discuss only , as you said this bulb is a bit old and in this days there is more other new products.

cram1971 wrote: »

The Philips Master bulbs were good in their day but even Philips have replaced them with a better bulb note sure of the price

http://www.philips.ie/c/-/led-4-w-20-w-gu5.3-cap-warm-white-8718291192800/prd/;jsessionid=447234E5B5C79644AB33AF2327DC1352.app102-drp2?t=specifications

Re op and price the guy is thinking of opening a business and perhaps reluctant to release a price until he can research the market. Ant hence the original post.

A market in my opinion already fairly flooded.

Capt'n Midnight

coalminer wrote: »

As for Captain - i think you have lost the plot coz your figures are now made up. You have confirmed that the lumen output is the same for 50 Vs 5 watt LED bulb so that is surely a 90% saving???

BTW. LEDs produce approx. 90 Lumen per watt and CFL are only 50 Lumens per watt so your numbers are flawed!

figures given in this thread are 80 L/w vs. 60 L/w - I don't have a figure for laser but below the threshold a laser behaves as an LED , above it's far more efficient.

Also the 90% only relates to the now illegal incandescent not to CFL

Dising CFL by using the energy consumption of incandescents is just the sort of thing dishonest marketing people do - and the www.asai.ie will kick you to bits over

So to summarise:
1) LEDs are more efficient -

slightly better than CFL, worse than laser

2) They give better light -

LED's are exactly like CFL it mostly depends on the phosphor used, unless you use tricolour LED's. I would rate this as dishonest too

3) They look better
4) They come in more fittings -

any economies evaporate when you have to buy new fittings

5) they last over 2x as long as CFL

so what ? CFL are dirt cheap to replace and you can buy them in a local shop, LEDs aren't remotely cheap in your local shop

6) Almost forgot this one - they don't contain harmful metals such as mercury

CFL's are down to mg amounts of mercury , anyone with fillings has a lot more mercury in their mouth
compare to the ban on lead in electronics, we still allow Kg's of it in virtually every motor vehicle.
NB. LED's have waste disposal problems too, especially heatshields and the by products of sulphuric acid used in processing waste LED's , like hybrid cars they aren't as green as the marketing people would like us to believe

7) Typical return on investment is under a year.

citation needed - compared to incandescent maybe , dishonest when talking about CFL's - Anyway on that basis payback time for a €2 CFL is one week (100w * 167h * €0.12/Kwh )

I really cant see Captains case for CFL - it think he must have been poisoned by eating one ;-)

And it's very hard to accept a case for LED's based on a comparison to incandescents

/me hates halogens they are way too bright and harsh , have ruined many a nice pub.

No Lasers aren't commercialised yet.
BMW probably won't be releasing the i8 until 2013.
Allow a year or two for production wrinkles to be ironed out and the costs will start to drop enough for others to use them. (prediction based on what's happened with every other LED technology that been released on the market) I'd expect LED prices to drop anyway over the next few years regardless - another reason to ignore long payback times compared to CFL - but faced with a light source twice as efficient they'll fall even faster.

Simple question how much have 5W LED's dropped in price over the last few years ?
Would it have been cheaper to have used CFL's for that time and bought LED's at todays prices ?

LED's are fine for niche markets, and perhaps new build. But for retrofitting and general lighting purposes the writing is on the wall

BTW
The laser diodes are 10nm long so cooling won't be the problem it is for thicker LED's (not to mention that they will need less than half the cooling)

zagmund

Here lads, you're losing me . . .


3) They look better
4) They come in more fittings -
any economies evaporate when you have to buy new fittings

I thought one of the advantages of LEDs over <some other option> was that they fitted into existing fittings. Did I miss something ?

I understood halogen required new light fittings, but CFL, LED & incandescent (old skool) just used standard fittings that have been built into houses for the last 60+ years. Did I miss something ?

CFL bulbs used to be big and while they would fit in to sockets, quite often the length of the bulb meant that existing shades were too small but I thought that had all been addressed in the last few years.


z

Capt'n Midnight

zagmund wrote: »

I thought one of the advantages of LEDs over <some other option> was that they fitted into existing fittings. Did I miss something ?

LED lamps for standard UK/Ireland Bayonet fittings are usually more expensive than those for Edison screw fittings.

I hate Edison screw fittings since you have to tighten the bulbs again every few months.

One common mode of failure for CFL's is capacitors in the bulb failing through over heating. I would assume the same for LED's that fit in mains sockets since they also need to reduce voltage. See http://www.badcaps.net/pages.php?vid=4 for more info on the general problem of capacitors in consumer goods over the last decade.
Yes it has gotten better since the problem was publicised. But while LED's can last 50,000 hours cost savings on some other components can undermine this. Best to stick to brand name LED bulbs if going for mains voltage ones.

Macha

Mod Edit

It should be noted that ledlamp is in the business of selling LED lamps, in fact the Philips lamp mentioned above is most probably one of his largest competitors.

It is not clear if the "5W NIVISS LED" that performed so well in the referenced test is sold by ledlamp or not.

Armed with this information readers can make up their own minds on the impartiality of the tests posted above.

Capt'n Midnight

Update.

Turns out I was wrong.
Atlantic now charge €2.19 for the CFL's :eek:

And the €2.19 Energy Saver + LED bulb is 8W/400Lm in CFL mode and 0.3W in LED mode.

http://www.osram.com/osram_com/products/led-technology/lamps/led-2in1-lamps/duled/index.jsp - The Atlantic one is normal UK/IRE B22 bayonet fitting.

Walkways and corridors
Children's rooms
General illumination, night-time lighting and background
lighting

They are very handy for night lights , or for hall lights , or to just have a little bit of light in the room while watching TV. And much cheaper than a dimmer switch or separate LED.

0.3W means it would use a fiver's worth of electricity a year going 24/7 in my case this is a lot cheaper than trying to fit a second light switch at the other end of the hall. About the only thing cheaper for this purpose would be pound shop solar powered lights, but they have nowhere near the same level of brightness.

coalminer

Captain - there is no point in continuing this debate. You are obviously deluded and twist the facts to suite yourself. I honestly don't care much about your opinion and to state that CFL are better than LED is just nonsense. If you did your research properly you would know that LED lights come in retro fit form and there is no rewiring required and they look most like traditional halogen lamps. LED look better than those horrible spiral lamps and off course LED don't need time to heat up as the give instant 100% light output.
The list goes on and on and there really isn't any need to get so defensive about the whole thing. Just accept that you are wrong.
I will not be replying to any more of Captains comments as it is like debating with a baby.

paddy147

ledbulb wrote: »

Hi i like to say that philips master 4w is no competitor of Niviss 5w this are two differente products ,maybe new 5,5 w philips but not 4 w i just say there many products on the market are much better than this model i didnt know that this is philips master fan topic. Ill try to make few pictures of both lamps working together so everyone will see how they perform thanks.

So why dont you go and buy the Philips 5W and test them along side your LED bulbs before you go "Philips bashing".:rolleyes:



"Engage your brain before opening your mouth".

PS-Nothing more than a marketing/sales ploy from you,as suspected by everyone in the "electrical forum".

Macha

There will be no more insulting comments about other posters. If you can't post without resorting to ad hominem attacks, do not post.

coalminer

Noted - now I'm off down the pub! Have a good weekend everyone!

ledbulb

I mention this product because paddy147 looking for example, if he can't accept the fact that technology go further his problem , I've tested more than 50 different bulbs and I know that bulb which was good one year ago now not seems to be that good ,

paddy147

ledbulb wrote: »

I mention this product because paddy147 looking for example, if he can't accept the fact that technology go further his problem , I've tested more than 50 different bulbs and I know that bulb which was good one year ago now not seems to be that good ,

Blah blah blah........its so obvious you are trying to sell what ever stuff you have,both here and on the "electrical forum" too........(blatant shilling)

You clearly havent tested the Philips "5watt" LED,against your bulbs
...you just post some link off the internet..WOW.

So why dont you go off and do propper "unbiased testing" before trying to put down a brand and product to promote and sell your stuff.


PS-I love how you have this thread marked down as "advice",yet you say you have tested loads of different LED lights??
Just another sneaky way to SELL and SHILL,seen as your posts were edited or removed on the "electrical forum" by the mods,and you were warned over there.

ledbulb

To be honest I like to inform everyone that i have business with led lights, and from my first post it was not a secret , after few months of sales have in my hands hundrets of led bulbs and lamps not only one or two , i never try to sell something on this forum , I like to hear others opinion, and give my opinion (after really many tests not after one or two bulbs hanging in my kitchen) , i understand that in this conditions for some people my opinions sound irresponsible , thats ok, i like paddy's opion about his philips lamps too, my opinion or rather fact make him angry, so let him cool and stop ths case. Hope everything is clear now.

paddy147

ledbulb wrote: »

To be honest I like to inform everyone that i have business with led lights, and from my first post it was not a secret , after few months of sales have in my hands hundrets of led bulbs and lamps not only one or two , i never try to sell something on this forum , I like to hear others opinion, and give my opinion (after really many tests not after one or two bulbs hanging in my kitchen) , i understand that in this conditions for some people my opinions sound irresponsible , thats ok, i like paddy's opion about his philips lamps too, my opinion or rather fact make him angry, so let him cool and stop ths case. Hope everything is clear now.

So you have indepenedently tested all the various bulbs together then???

That is what you are saying here??

You didnt know about the Philips "5 watt LED"..

Please explain to me and us all here how you tested all these bulbs then??


What makes of bulb did you test then and how EXACTLY did you test them against each other....seen as you have "tested loads" of them.

RUCKING FETARD

Whats with the huge markup on leds?

Local electrical/hardware place buys them in for €3.30 and selling for €9?

GU10 type, could see the computer monitor.

ledbulb

You right the same bulbs can cost 5 or 10 eur depend of the place, some shops like to make fortunes in a few months.

RUCKING FETARD wrote: »

Whats with the huge markup on leds?

Local electrical/hardware place buys them in for €3.30 and selling for €9?

GU10 type, could see the computer monitor.

RUCKING FETARD

ledbulb wrote: »

You right the same bulbs can cost 5 or 10 eur depend of the place, some shops like to make fortunes in a few months.

Checking places that I know are good legit sellers, €9 is cheapest I see them for.

shedweller

Ah but...

Aren't we told not to buy the cheap ones? Or are there cheap ones that are good. If so, what are they and where can i get them?
I got stung with them before so i will be very cautious with whatever led gu10 i buy in the future.