Jump to content



Photo

Household Bulbs - Is LED Really Better?

bulbs

  • Please log in to reply
63 replies to this topic

#46 spikey_richie

spikey_richie

    XXXIII

  • 2,594 posts
  • Joined: 02-February 05
  • Location: Nuneaton, UK
  • OS: Windows 8.1u1 Pro 64-bit
  • Phone: Sony Xperia Z1

Posted 30 May 2013 - 14:39

I have one of these over my head, retailed at £40 each.

Posted Image

I have 4 of these in the kitchen:

Posted Image

And then 1 of these in the bedroom:

Posted Image


The screw cap bulbs are dimmable, and have a nice colour tone & brightness.

If I paid full price for all of them, it'd take a LONG time for them to pay for themselves. The GU10's are very bright and have good coverage, I found the B&Q LED bulbs had a bad colour temp (very cold) and were very directional.


#47 Roger H.

Roger H.

    Neowinian Senior

  • 13,042 posts
  • Joined: 18-August 01
  • Location: Germany
  • OS: Windows 8.1
  • Phone: Nexus 5

Posted 30 May 2013 - 15:00

Got a model number for those GU10s? I need 4 for my kitchen still.

Maybe (based on the file name of the picture?) MV-8-50W-CRI90 :ermm:

#48 Axel

Axel

    --[Est. 1986]--

  • 5,444 posts
  • Joined: 05-August 03
  • Location: Milton Keynes, UK

Posted 30 May 2013 - 18:35

Posted ImagePosted Image

These give a good light!

#49 metallithrax

metallithrax

    I saw you earlier, with the hairy stick....

  • 8,565 posts
  • Joined: 24-May 04
  • Location: Wherever I am at his moment in time.
  • OS: Windows 8
  • Phone: Sony Xperia U (android 4.0.4)

Posted 30 May 2013 - 18:47

In my case it was

I was spending £36 a year roughly on Bulbs

and have spent £18 in the last 3 years due to the LEDS which on bulbs would have been roughly £108


Seriously? I don't think i've spent that amount on bulbs in my whole life and i'm 45. Can't remember the last time I bought any bulbs, but they were Phillips low power and I got 3 (or 5) for £1.

#50 Roger H.

Roger H.

    Neowinian Senior

  • 13,042 posts
  • Joined: 18-August 01
  • Location: Germany
  • OS: Windows 8.1
  • Phone: Nexus 5

Posted 30 May 2013 - 18:49

snipped

These give a good light!


This is the one I bought at Home Depot (29.99) and I didn't like the light unless I have a bad one. Getting ready to return it this weekend but maybe i'll try it in there again and see if I warm up to it more.

#51 vetneufuse

neufuse

    Neowinian Senior

  • 17,223 posts
  • Joined: 16-February 04

Posted 30 May 2013 - 19:02

I just don't like how a lot of LED lights list themselves as "warn white" and 2700K yet you read the documentation on them and the true light color is like 3400k or 3100k or even 3000k yet they market it as warm white, not a brighter bluer white

#52 spikey_richie

spikey_richie

    XXXIII

  • 2,594 posts
  • Joined: 02-February 05
  • Location: Nuneaton, UK
  • OS: Windows 8.1u1 Pro 64-bit
  • Phone: Sony Xperia Z1

Posted 31 May 2013 - 12:06

Got a model number for those GU10s? I need 4 for my kitchen still.

Maybe (based on the file name of the picture?) MV-8-50W-CRI90 :ermm:


I'll have a look when I get home.

#53 vcfan

vcfan

    Straight Ballin'

  • 5,348 posts
  • Joined: 12-June 11

Posted 31 May 2013 - 15:14

all LED bulbs ive seen have very fast flickering,and if you're like me and notice these things, it will bug the hell out of you.

#54 vetneufuse

neufuse

    Neowinian Senior

  • 17,223 posts
  • Joined: 16-February 04

Posted 31 May 2013 - 15:39

all LED bulbs ive seen have very fast flickering,and if you're like me and notice these things, it will bug the hell out of you.


You must be looking at some old models or el-cheapo bulbs.... because Halo, Cree, Feit, Sylvania, Phillips, and Utilitec for example have used dedicated AC-DC drivers for a while now to run the LED's on consistent DC power instead of AC with it's 60 or 50 Hz flicker depending on your country... basically if a bulb is under $10 per bulb, it's probably direct driven with a voltage regulator and a rectifier which will cause the on-off pattern of AC.... when you start going over that line you start getting DC driver bulbs... high end recessed LED lighting has had dedicated DC drivers for ages now

heck you can even get LED Christmas lights (you know the ones that are notorious for flickering when driving or moving past them) now with DC drivers that eliminate the flicker completely... I know I put up extra money for nice warm glowing LED Christmas lights with DC drivers in line

#55 vcfan

vcfan

    Straight Ballin'

  • 5,348 posts
  • Joined: 12-June 11

Posted 31 May 2013 - 16:00

You must be looking at some old models or el-cheapo bulbs.... because Halo, Cree, Feit, Sylvania, Phillips, and Utilitec for example have used dedicated AC-DC drivers for a while now to run the LED's on consistent DC power instead of AC with it's 60 or 50 Hz flicker depending on your country... basically if a bulb is under $10 per bulb, it's probably direct driven with a voltage regulator and a rectifier which will cause the on-off pattern of AC.... when you start going over that line you start getting DC driver bulbs... high end recessed LED lighting has had dedicated DC drivers for ages now

heck you can even get LED Christmas lights (you know the ones that are notorious for flickering when driving or moving past them) now with DC drivers that eliminate the flicker completely... I know I put up extra money for nice warm glowing LED Christmas lights with DC drivers in line


yep that's it, poor power supply. I don't personally use them, but everywhere ive seen them I immediately notice it.

#56 Roger H.

Roger H.

    Neowinian Senior

  • 13,042 posts
  • Joined: 18-August 01
  • Location: Germany
  • OS: Windows 8.1
  • Phone: Nexus 5

Posted 31 May 2013 - 16:29

The Phillips one I have doesn't flicker either unless it's just my eyes or something so i'll tend to agree with neufuse. :)

#57 +s55

s55

    Neowinian Senior

  • 1,715 posts
  • Joined: 30-April 03
  • Location: Scotland

Posted 31 May 2013 - 16:46

You must be looking at some old models or el-cheapo bulbs.... because Halo, Cree, Feit, Sylvania, Phillips, and Utilitec for example have used dedicated AC-DC drivers for a while now to run the LED's on consistent DC power instead of AC with it's 60 or 50 Hz flicker depending on your country... basically if a bulb is under $10 per bulb, it's probably direct driven with a voltage regulator and a rectifier which will cause the on-off pattern of AC.... when you start going over that line you start getting DC driver bulbs... high end recessed LED lighting has had dedicated DC drivers for ages now


It's worse than that, some of the el-cheapo bulbs have mains electricity microns away from the metal chassis and it's mostly a matter of when the build will fail, not if. It's quite fighting how unsafe some of the LED bulbs are.

As you say, stick to the more expensive lamps. (Avoid ebay unless you know the seller).

Personally, I like the "COB" chip based bulbs (e.g. http://www.amazon.co...t/dp/B00BBFFKJO). They give some of the best light to watt ratios. Worth paying the extra for!

#58 qubeular

qubeular

    Neowinian

  • 18 posts
  • Joined: 29-October 08

Posted 31 May 2013 - 16:53

do florescent lightbulbs leak mercury from glass micro fissures. i have got too many problems with mercury in my life already. can the atomic wavelength be transverted to visible light and somehow weaken my bodies immunity to mercury. does woods glass in any way confuse my circadian rhythm by blocking out certain wavelengths of blue light? i dont use florescent apart from outside fixtures, and i dont buy them. led might be ok, i still use incandescent. not my fault i might be allergic to mercury florescent light(s).

#59 vetneufuse

neufuse

    Neowinian Senior

  • 17,223 posts
  • Joined: 16-February 04

Posted 31 May 2013 - 17:14

and I love how people say LED bulbs are "cool" well no, their drivers make heat, if your bulb has a big heat sink on it, it probably has a driver that has a transformer that is making heat... the LED chip itself is cool, the rest of the bulb nope

#60 HawkMan

HawkMan

    Neowinian Senior

  • 22,209 posts
  • Joined: 31-August 04
  • Location: Norway
  • Phone: Noka Lumia 1020

Posted 31 May 2013 - 18:34

and I love how people say LED bulbs are "cool" well no, their drivers make heat, if your bulb has a big heat sink on it, it probably has a driver that has a transformer that is making heat... the LED chip itself is cool, the rest of the bulb nope


Touch a 50W halogen reading spotlight with your bare Han, the a 6 watt LED and the tell me LEDs are hot :) yeah they're not cold, but they also won't burn, they'll give of 6W of heat. And if it's a LED lamp with the electronics and driver in the base away from the actual LED then it will be cool and have longer life.

It's also about radiated heat. Use a 50 W halogen as a reading light and your hands will get warm and sweaty, probably you head to as the light is probaby near it and hits it. A LED however only radiates light not heat