What Happened to the 100000 Hour LED Bulbs? • Hacker News Board

Re: What Happened to the 100000 Hour LED Bulbs?

#251

Post by jpalomaki » Wed, Feb 06, 2019, 7:26 PM UTC

2019ideas wrote: post #76

I bought some G9 bulbs, and they are not performing like the halogens... It doesn't give me the full RGB like halogens and my house looks pale white(lacks red) instead of full color. I might go back, I do not like the look of my house, and I find myself turning on my living room lights AND dining room lights. The brightness wasn't there. There is massive improvement to be made on LEDs still.

There's a wide variety of products on the market - not all led bulbs are the same. Google for example: led CRI

G9 is probably quite challenging for high-performance LEDs because the size is so small. In the other sockets like E27 and GU10 there are lot of options available and also products designed for commercial use (where you need certain characteristics because you want to make your products look good under the light).

Re: What Happened to the 100000 Hour LED Bulbs?

#252

Post by dfox » Wed, Feb 06, 2019, 7:26 PM UTC

brianpgordon wrote: post #113

Why are they putting electrolytic capacitors in these light bulbs? The SM2082D datasheet specifically calls for an electrolytic cap, but wouldn't a power ceramic cap last longer? 4.7uF is doable with ceramics. Is it just a really minor cost thing, and hoping the bulb fails so you have to buy a new one?

You have to take into account the voltage that the capacitor runs at. 4u7 200V X7R MLCC is going to be huge and certainly several orders of magnitude more expensive than Al electrolytic.

Re: What Happened to the 100000 Hour LED Bulbs?

#253

Post by phasetransition » Wed, Feb 06, 2019, 7:27 PM UTC

antisthenes wrote: post #156

phasetransition wrote: post #105

So, engineering lead of a (outdoor) led Luminaire manufacturer here. And our sales director used to work for one of the biggest Asian light bulb OEMs. Happy to answer specific technical questions out there that this article triggered.

How much does it cost to make a LED bulb that runs no hotter than 45C at all times?

I cannot speak knowledgeably to this for A19 type products, but generally there is no need to have such low temperatures to achieve good lifetimes. There may be temperature requirements this low for bulbs mounted in certain locations, but that is not a part of UL 1598 that I have in my brain.

Re: What Happened to the 100000 Hour LED Bulbs?

#254

Post by dwighttk » Wed, Feb 06, 2019, 7:29 PM UTC

nine_k wrote: post #208

dwighttk wrote: post #174

Earlier quoted context omitted.

Yeah, I switched a few bulbs to CFLs 10 years ago when they "became decent", and then switched them out every 6 months (i.e. when they burned out) until LEDs "became decent"... Haven't had as much trouble with LEDs as CFLs, but I'm definitely not paying $10+/bulb like I did with CFLs.

> definitely not paying $10+/bulb Maybe you should. I mean, the cheapest option is rarely the most durable or performant. See Vimes' Boots Theory. https://en.wikipedia.org/wiki/Sam_Vimes#Boots_theory_of_soci...

those $10 CFLs burned out almost as quickly as I could replace them. Kinda spoiled me on the whole "spend more for something that will last longer" theory.

Re: What Happened to the 100000 Hour LED Bulbs?

#255

Post by iforgotpassword » Wed, Feb 06, 2019, 7:30 PM UTC

masklinn wrote: post #181

ip26 wrote: post #99

Earlier quoted context omitted.

To add, your typical laptop these days has a 45W or 65W power supply, which will not be fully loaded most of the time!

They specifically mention desktop computers, not laptops.

They're basically at the same level if you don't use high end CPUs and gaming GPUs. Also see here: http://www.extremetech.com/extreme/135719-5-9-watts-the-worl... - tldr: 30w idle for an unmodified average system. Mind you this was 2012, mid range systems surely haven't gotten more power hungry since then.

Re: What Happened to the 100000 Hour LED Bulbs?

#256

Post by dwighttk » Wed, Feb 06, 2019, 7:30 PM UTC

jandrese wrote: post #242

organsnyder wrote: post #183

Earlier quoted context omitted.

Funny... I've never noticed that. Maybe your municipality picked the wrong vendor?

Or he lives in a town where people regularly shoot the stoplights.

maybe... looks like some sort of passive failure to me though. I haven't noticed any bullet holes.

Re: What Happened to the 100000 Hour LED Bulbs?

#257

Post by [deleted] » Wed, Feb 06, 2019, 7:30 PM UTC

wil421 wrote: post #6

My father in law is a general contractor and religiously keeps all his LED bulb receipts. If anything goes out before the listed hours he returns it to HomeDepot. He hasn’t had any issue so far including some of the older bulbs described in the article.

[deleted]

Re: What Happened to the 100000 Hour LED Bulbs?

#258

Post by 8bitsrule » Wed, Feb 06, 2019, 7:31 PM UTC

New Yorker:'LED Quandry' (2016)https://www.newyorker.com/business/currency/the-l-e-d-quanda...

"A light bulb at a fire station in Livermore, California, has been on almost continuously since 1901. In 2015 it was recognized by Guinness World Records as the world’s longest-burning bulb.... Giles Slade, in his book “Made to Break,” traces the term “planned obsolescence” to a 1932 pamphlet, circulated in New York, titled 'Ending the Depression through Planned Obsolescence'.... the lamps market will bring in an estimated thirty-eight billion dollars this year, L.E.D.-bulb makers are already reacting to the spectre of declining sales."

Re: What Happened to the 100000 Hour LED Bulbs?

#259

Post by reallydude » Wed, Feb 06, 2019, 7:32 PM UTC

dsfyu404ed wrote: post #160

Sebguer wrote: post #120

Earlier quoted context omitted.

yeah, darn those pesky laws around liability getting in the way of some good old-fashioned handiwork.

Few plumbers or electricians with a license are going to waste their time replacing your dryer or light fixture. They probably will send their (unlicensed) employee who's paid a couple bucks over minimum wage to do it. Their time is better spent on jobs that actually require their expertise. You know, the kind of jobs where you'd pay extra for a credentialed expert anyway. They probably will never set eyes on whateve…

Because the majority of HN reader have always either paid someone or simply never been involved with:

* Home rennovation (requiring city signoff)

* Home repairs

* Rental repairs

* Court over repairs or alterations to property

Re: What Happened to the 100000 Hour LED Bulbs?

#260

Post by dragonwriter » Wed, Feb 06, 2019, 7:35 PM UTC

dsfyu404ed wrote: post #160

Sebguer wrote: post #120

Earlier quoted context omitted.

yeah, darn those pesky laws around liability getting in the way of some good old-fashioned handiwork.

Few plumbers or electricians with a license are going to waste their time replacing your dryer or light fixture. They probably will send their (unlicensed) employee who's paid a couple bucks over minimum wage to do it. Their time is better spent on jobs that actually require their expertise. You know, the kind of jobs where you'd pay extra for a credentialed expert anyway. They probably will never set eyes on whateve…

> A down-vote without a reply

...is using the downvote correctly. Downvoting is for comments that are not productive contributions to the kind of discussion desired on HN, responding to any post that merits a downvote is increasing the noise-to-signal ratio.