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What Happened to the 100000 Hour LED Bulbs?

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Re: What Happened to the 100000 Hour LED Bulbs?

#281

Earlier quoted context omitted.

> if you always scan your Family Card i.e., if you agree to be tracked.

if you don't pay cash, you are also being tracked (credit cards)... and soon/now you will also need a mask/burka to avoid being tracked (facial recognition).

edit: you probably also should not be carrying any tracking device with you (aka, cellphone)

Re: What Happened to the 100000 Hour LED Bulbs?

#282

Earlier quoted context omitted.

A competing manufacturer can always offer a product that last longer and warranty it, and people might choose to purchase it depending on the price. However, as the article notes, people may not be interested in paying a premium for a product that lasts 10y instead of 5y or 20y instead of 10y, since the tech can change or maybe it’s susceptical to other kinds of degradation.

For bulbs that are really cheap, people won't keep their receipts and warranty information. I think it will be hard for bulbs to differentiate by warranty.

yea if it fails after a year (vs. a few days) very few people are going to bother with or even remember there was a warrantee

Re: What Happened to the 100000 Hour LED Bulbs?

#283

Earlier quoted context omitted.

>environmental impact is pretty low of these where the mercury cycle is closed // Which countries have widespread recycle facilities for CFLs? In UK I'm almost certain they all just go in to landfill (in this country or another).

In the US you can drop off burned out CFLs in recycling bins at Home Depot and Lowes. However yes, most people don't know about that and just landfill them.

>"we asked to more than 1,000 people at the end of 2009. Then, 68% surveyed threw their last energy saving light bulb in the bin." (Which? [0]) //

Bit out of date but indicative of the UK situation I imagine.

The best I could do for the USA situation was that [1] shows about 1.5M recycled CFLs in 2010, vs [2] shows about 300M sold in 2009, 0.5% recycle rate ...

[0] https://conversation.which.co.uk/home-energy/do-you-recycle-... [1] https://www.consumerreports.org/cro/news/2011/04/despite-mer... [2] https://www.masslive.com/news/index.ssf/2011/12/cfls_compact...

Re: What Happened to the 100000 Hour LED Bulbs?

#284

Earlier quoted context omitted.

A competing manufacturer can always offer a product that last longer and warranty it, and people might choose to purchase it depending on the price. However, as the article notes, people may not be interested in paying a premium for a product that lasts 10y instead of 5y or 20y instead of 10y, since the tech can change or maybe it’s susceptical to other kinds of degradation.

For bulbs that are really cheap, people won't keep their receipts and warranty information. I think it will be hard for bulbs to differentiate by warranty.

The advantage of buying online.

Re: What Happened to the 100000 Hour LED Bulbs?

#285

Earlier quoted context omitted.

Ikea when the size is available, for reasons I cannot discuss here.

My guess is that is has to do with IKEA's improving smart home trend [0]. I like the fact that the work with all three major platforms so I don't necessarily have to be all in on one if I decide to switch in a couple of years: "Trådfri [has] compatibility across Apple HomeKit, Alexa, and Google Assistant". [0] - https://www.wired.com/story/ikea-fyrtur-smart-blinds/

It has nothing to do with this. It has to do with details about the OEM for the Ikea product.

Re: What Happened to the 100000 Hour LED Bulbs?

#286
post #235

Lifetime isn't even my #1 concern with LED bulbs. It's strobing/flickering. I film all the LED bulbs I buy in slow motion at 240 fps with an Android phone, and play the movie back on a PC with mplayer using the dot(".") key to move frame by frame. Here is a shot I made comparing 2 brands of LED bulbs: https://youtu.be/QbenId_F2RQ (Edit: yeah you don't have to transfer to a PC, just playing back in slow motion on the…

What I've found to help weed out the worst of the worst is to only buy dimmable versions of the bulbs. They cost more but because they have to support dimming they're almost required to have a better power supply to handle the usual triac based control that most dimmers have.

Re: What Happened to the 100000 Hour LED Bulbs?

#287
post #271

Earlier quoted context omitted.

Perhaps dimmable LED bulbs would be better in that regard? The LED dimmers on the market use a very high rate PWM (afaik) to prevent/minimize flickering at low brightness. I would guess that the dimmable bulbs are designed to work well with intermittent power and so wouldn't have the same problem. Of course it's still hit or miss, compatibility between bulbs and dimmers seems to be very hard to judge without testing…

Dimmable LEDs are not automatically flicker-free. My father had very cheap dimmable ones, and I complained at every visit about the strobe effect until he bought flicker-free ones. Most dimmers work via pulse width modulation [1], i.e. the power supply is switched on/off in a different interval (more off time means lower brightness). A true flicker-free dimmed LED has to be dimmed in an analog way (probably only feas…

I can't find the source right now, but I read that the fastest cells in the visual pathway can respond at a bit under 500Hz. Part of the reason the ieee suggests a minimum PWM frequency of 3000Hz is, for signal processing reasons I don't fully understand, that's the highest frequency the brain could likely detect, given 500Hz "sampling hardware."

Re: What Happened to the 100000 Hour LED Bulbs?

#288

Earlier quoted context omitted.

Nobody is going to sabotage them, but they’re also not going to spend money making them list one minute longer than they really have to. If you’re focused on the short term or think reputation isn’t a big driver of your sales, then your product really doesn’t have to last very long. I think it gets worse as time goes on, because manufacturers gain experience with the lifespan of their components and learn exactly whe…

A competing manufacturer can always offer a product that last longer and warranty it, and people might choose to purchase it depending on the price. However, as the article notes, people may not be interested in paying a premium for a product that lasts 10y instead of 5y or 20y instead of 10y, since the tech can change or maybe it’s susceptical to other kinds of degradation.

But when that estimate is based on 3 hours a day, and you actually use the bulb 9 or 12 or 24, the balance shifts significantly.

Re: What Happened to the 100000 Hour LED Bulbs?

#289

Earlier quoted context omitted.

> Going from a Class A to an A+++ washing machine would save ~500Wh/cycle. The major energy cost for clothes washing is heating the water. A rooftop solar water heater dramatically reduces energy use, often more than one would get from using the same space to install solar panels. A front loading washing machine uses less water than a top loading one and will also use less energy for water heating.

> The major energy cost for clothes washing is heating the water. A rooftop solar water heater dramatically reduces energy use, often more than one would get from using the same space to install solar panels. Most modern washing machine are cold-water only, washing machines with a hot water inlet tend to be prosumer. Same with dishwashers.

[deleted]

Re: What Happened to the 100000 Hour LED Bulbs?

#290
post #235

Lifetime isn't even my #1 concern with LED bulbs. It's strobing/flickering. I film all the LED bulbs I buy in slow motion at 240 fps with an Android phone, and play the movie back on a PC with mplayer using the dot(".") key to move frame by frame. Here is a shot I made comparing 2 brands of LED bulbs: https://youtu.be/QbenId_F2RQ (Edit: yeah you don't have to transfer to a PC, just playing back in slow motion on the…

We need IEEE PAR1789 bulbs! The department of energy has a great presentation on LED flicker and this IEEE standard for better bulbs, https://www.energy.gov/sites/prod/files/2015/05/f22/miller%2...
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