I'm in a nasty frame of mind right now, and this is what my 'tism brain decided to laser focus on for several hours. I'm mad that my light bulbs cost 10x more than they used to, and don't last any longer, and my power bill is higher than ever.
Yeah yeah, I know, it's probably just capitalism shitting it up on purpose for profit. And bulb science is probably solid, I guess. I'm just pissed off that I just barely managed to scrape through this pay period with $2.78 left in the bank before I default on my mortgage.
Anyway, any lightbulb science comrades got any info?
I've never replaced an led bulb and I've had them 10+ years.
Dirty power can burn them out, as can bad heat dissipation
Some older wiring and devices can interact poorly and cause fluctuating voltages. The more stable the voltage, the less wear on the components and vice versa.
If you were to lower the voltage would it still cause extra wear? Like is it the fluctuation itself that causes the wear or is the the 'higher than expected voltage' during peaks of the fluctuating?
I know undervolting can make some electronics, including lightbulbs last longer, but I don't know if that would countermand the extra wear from the changing voltage.
I haven't explored LEDs too much, but have an education related to transistors. Because they are diodes, significant overvolting will degrade the diode itself and if it were to happen often enough could damage the junction to the point of no longer working. Fluctuating voltage could damage other parts of the device, but I'd guess overvolting is the bigger danger
I can’t think of a time where I had to replace an LED bulb either.
I mean, when I moved into a new condo, I replaced the bulbs with brighter ones, but the old ones worked and were covered in dust, so I’m guessing they were working for a long time.
Or some fell off the back of the truck chinese knock off crap leds.
As to electricity, even if you left all the non led lights on in your house all month, it's still only a small portion of the usage compared to the water heater, hvac, dishwasher, and laundry stuff. Along with all them watts in your TV and coursing through a gaming desktop.
Filament bulbs are appreciably more expensive than led, to the point that an led pays itself back very quickly
Heat is the main killer of LED bulbs. The Hook Up on YouTube did a comparison of several different bulbs and his investigation showed that filament style LED bulbs like the Phillips Ultra Definition ($3.50 per bulb) have a lower peak temp by like 80 degrees Fahrenheit than the standard style (12-24 LEDs in a ring). I recommend trying those out and seeing if you have better luck.
They get too hot and the 0.07$ capacitor they put in it dries out and dies. You want the 0.09$ capacitor which lasts 1000 times longer, but usually they only put those in the 45$ led bulbs.
You can do like me, when they die, take them apart and replace the capacitor with a super deluxe 0.11$ one !
Holy shit I never thought about what's inside an LED bulb past the LEDs themselves.
It's an AC to DC step down voltage regulator and then a multi channel constant current regulator to drive the led and the current setting is changed by a microcontroller which usually has a Bluetooth or ZigBee or ism/315/433/915 MHz or infrared transceiver for communication with your phone / remote
It's either the wiring in your house or the light fixtures or both.. If I remember right older light fixtures, like before the last 15 years, don't have the right type of power regulation and it kills LEDs quick. Source: Not an expert just have the same problem in my place.
I have no idea what you're doing wrong. All the led bulbs I've got are coming up on ten years old and working fine.
I’ve never had an LED bulb go bad. Even those that sit in a drawer or box for years at a time.
This is a really interesting article on lightbulbs, which have a pretty conspiratorial past: https://interestingengineering.com/science/everlasting-lightbulbs-exist-ed
Did you know that a secret meeting was held in Geneva in 1924 between lightbulb manufacturers that lead to the formation of the 'Pheobus Cartel'?
"The main objective of this cartel was to agree to control the supply of light bulbs. Each understood that if any one of them managed to develop a long-lasting light bulb, the need for replacement bulbs would likely dry up.
Bulbs were lasting too long. Not ideal from their point of view.
So, to combat this, all members of the cartel agreed to reduce the lifespan of bulbs on purpose. Initially, this was set to no more than 1,000 hours!"
The longest-lasting lightbulb was first turned on it 1901 and is still shining.
EDIT: Seems this is a myth, see replies for more information!
Here is a really interesting video on lightbulbs which goes into how the light bulb cartel standard was more of a min-maxing of lifespan vs energy cost vs brightness than it was planned obsolescence.
That's a cop-out. Why else would the companies agree to a fine for every bulb that exceeded a certain lifespan?
LEDs run on DC power, not AC like regular bulbs; therefore there is a power supply inside that converts and regulates the power.
The two most common failures in LED systems is shitty power supplies dying prematurely, either because of heat or because of just crappy cheap hardware, or the design is wrong which overcurrents the LEDs which kills it.
I remember my uncle had all the lighting in his kitchen changed to LED with a fancy light, it was bright and really nice, but the power supply died (I tested it by switching the PSU between the units, all the LEDs were fine, just the power supplies sucked). I couldn't find a replacement for the same serial number, so I put another PSU from a different brand I got on eBay and it was fine. The original PSUs were all dead within the first 4 years, the aftermarket ones are all still fine 6 years later.
Obviously for these lightbulbs, this is a bit harder to do since they are all in one, so it's probably a good idea to get higher quality bulbs. I am not an expert, but I really like the Philips ones I have right now that are rated for 50000 hours (though they are relatively new, only bought them this year, so I can't say much about their reliability).
TL;DR: Not all LEDs are created equal.
16 years ago, when I moved into a new apartment, I bought a 4 pack of colour changing led light globes. I liked them so much, I ended up replacing all of the remaining globes in the apartment with white only versions when they became available.
About 7 years in, 2 of them started having problems, so I replaced them. The other 2, along with the others I bought along the way are still going strong. I took them with me when I moved out of that apartment and put back the globes that the apartment had when I first moved in.
My current place has all the globes I bought, along with some my roommate had from the same timeframe. He never had any problem globes.
Now, these globes weren’t cheap, but I think that’s the point. Light globes don’t burn out like they used to, but if you buy the cheapest piece of crap you can find, you’re gonna get… well, the cheapest piece of crap.
As for your power usage, I suggest you look elsewhere. Even the crappiest led light will use less power than practically everything else.
where are you people buying your bulbs, i have not touched onein a year at least
What are you on about? I've switched to LED bulbs about 10 years ago, and I've never had to replace a single one...
The bulbs generally contain around 10 LEDs arranged in series, so if any one of them fails, the bulb no longer works. Also they are generally not cooled well, and the heat leads to faster failures.
If you have a dead one around, pry it open and you'll likely see some slightly charred or discolored plastic and also one LED with a tiny charred spot.
Seems like it would be easy enough to mitigate both of those problems with basic design improvements, but cheap design causing early failure is sort of a win/win from the mfg perspective.
