LED light bulbs

TimBuckTeeth

gord115 wrote: »

I've just been to Asda and they have some GE bayonet fitting light bulbs for £10. They are rated at 60 lumens, and use 2 watt.

How bright are they? has anyone tried them?

I haven't tried them but 2W would not give much light, around the same as a 15-25W normal incandescent bulb.

Steve_xx

TimBuckTeeth wrote: »

I would not buy them. They will be dim at only 1.8W and using a cluster of standard LEDs.
As I mentioned above I would only consider lamps using the 1W or 3W high powered LEDs, as they are brighter and better quality. With a minimum total of 5W for adequate brightness.

I recently bought some GU10 LED's from B&Q. They seemed to be selling them off. I paid just £2 for 4 bulbs and they each have 20 LED's in them. The packaging says 6500K= Cool White and on the bulb it says 1.3w 21mA. There is no brand name on them, just says "made for B&Q". They seem pretty good to me. I have 4 of them in the bedroom and though not as bright in total as the halgogens I had there before, they are acceptable. I wish I'd have bought some more of them at that price. The WEveready's are 1.8w so guess they will be bit brighter perhaps?

The problem is, my Mum has moved to a new house with either 16 or 20 GU10 halogens in the kitchen. The electricity they use would be unacceptable when they are all on. I was thinking that 16 of the Evereadys might be enough? Her bathroom also has either 4 or 6 GU10 halogens and I'm thinking that the Eveready's might be ok for there too. It's only a small bathroom. I guess it would be possible to retain one or two of the halogens in both the kitchen and the bathroom.

Biggles

TimBuckTeeth wrote: »

I haven't tried them but 2W would not give much light, around the same as a 15-25W normal incandescent bulb.

60 lumens would be more like a 5 watt incandescent (should such a thing exist).

TimBuckTeeth

Biggles wrote: »

60 lumens would be more like a 5 watt incandescent (should such a thing exist).

Even worse than my guesstimate. Pretty useless then, and not very good efficiency for a LED.

TOMMY_R

Mrs_Egg wrote: »

I haven't had a chance to read through everything that has been said on here but it does seem a lot of people are confused in regards to LED with regards to what levels you can achieve, prices, quality etc..

I don't know if posting links to various websites is allowed on here (if its not ok I shall remove it) but this website from Philips has some very good comparable data for standard lamps to LED lamps which may help people to understand.

Please note I do not work for Philips (I work as an independant lighting designer) and by no means am i saying go out and buy their product or what they are claiming is comparable to any other LED lamp. I just thought it may help

I would say what you pay for is what you get at the moment in the LED lighting field unfortuantly. If anyone has any questions I am more willing to try and help.

I agree with this.
I find that out all off the lamps I have tried, Philip offer the best quality LED lamps. An example of this can be found if you compare one to that of an existing halogen light. A warm white Philips LED lamp seems to have a light output almost identical or almost the same to that of a 50w or 35w halogen.

If you buy something thats cheaper, i find the light quality reduces vastly.

However, a nice lamp which i bought are called Deltech 4.5W warm whites. these were almost half the price of the philips and although the light output in warm white isnt completley comparable to that of a Philips LED or halogen, it offeres a nice output.

i dont work for Philips or Deltech, by the way either but just my advice

Feeling_opressed

Whatever the merits of LED lamps one serious problem is 60% of the ones on sale despite being CE marked emit so much radio interference that they can jam your radio - DAB or FM equally badly. The effect radiates over 5 metres from the lamp with 12v MR11 types so even your neighbour could shut off your radio 4 reception. Check out the Which? site for led-bulb-radio-interference-dab-test. I've tried replacing my 9 kitchen lights twice, and sent the lamps back for a refund, as they stopped me listening to the radio. I tried some Chinese made ones from Amazon marketplace and some "British" ones from BeamLED, both failed.

sunshinetours

Feeling_opressed wrote: »

Whatever the merits of LED lamps one serious problem is 60% of the ones on sale despite being CE marked emit so much radio interference that they can jam your radio - DAB or FM equally badly. The effect radiates over 5 metres from the lamp with 12v MR11 types so even your neighbour could shut off your radio 4 reception. Check out the Which? site for led-bulb-radio-interference-dab-test. I've tried replacing my 9 kitchen lights twice, and sent the lamps back for a refund, as they stopped me listening to the radio. I tried some Chinese made ones from Amazon marketplace and some "British" ones from BeamLED, both failed.

Source?

Have replaced my 11 kitchen GU10's with various LED's and no interference. Have replaced my 2 lounge with traditional bulb shaped ones , no intereference from any of these different makes on DAB or traditional signals in same or otehr rooms.

Biggles

Feeling_opressed wrote: »

Check out the Which? site for led-bulb-radio-interference-dab-test.

That (http://conversation.which.co.uk/energy-home/led-bulb-radio-interference-dab-test/) is more of a discussion; Which? have only carried out a very small number of tests and thrown it open to debate. Not very scientific at this stage.

The problem does appear mainly to be with cheap, low voltage bulbs and the general opinion appears to be that it is the transformers that are at fault.

missesther

I use 7W LEDs from Philips and they are equally as bright as the 50W halogens that were previously there.

almillar

missesther - can you give us a link?