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446

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[–] 11 pts (edited )

Fucking (((big lightbulb))) strikes again.

We need a startup that creates 50 year bulbs, with power protection built in so dirty power doesn't hurt the LED's. Make them bombproof and put a fat warranty on them. Charge a premium, but undercut based on longevity and saved replacement costs. The goal of the startup should be to capture 100% of the addressable market 1x and then have a decline in business, including putting away money for warranties and repairs. Market it based on long-term savings, reducing waste, lowering energy costs, and less hassle.

[–] 9 pts

White LEDs are a combination of a blue LED and phosphor. Due to the nature of the beast, they have a limited life because of the materials used.

[–] 2 pts

That's bullshit. The phosphor can easily be applied to the lense and essentially make the LED part exactly the same as a blue LED.

[–] 7 pts

Yeah, phosphor is applied to the cup or the surrounding area of the LED. Blue is emitted, absorbed, and the excited phosphor emits as white. YAG is the most common for the high-power lighting LEDs, it's what gives COB LEDs their distinctive piss-yellow color. Look at a white LED with a spectral analysis. You'll mostl likely see one in deeper blue and one in yellow-green. You see it as white.

Lower power whites used to just coat the cup with phosphor, that's why the old ones had a blue halo around the white light. I need to pick up some new 5mm units and see if they still do that.

The phosphor eventually changes over time and emits less light. I'd assume it has something to do with heat cycles and moisture and simple aging, but I have no idea. Never really studied the effect because I'm not going to be working in the field.

[–] 4 pts

A prince in Dubai already did that. He had westinghouse, or some other manufacturer, build them bulbs that were the same as regular LED bulbs except they had more LED filaments in them. This meant that they could produce the same amount of light while being driven an lower voltages.

They essentially never burn out, which is exactly what LEDs were always supposed to be. But the way (((they))) get them to burn out is to drive them at a voltage that is too high.

[–] 5 pts

except they had more LED filaments in them.

lol Wat.

LED bulbs don’t use filaments, they use LED arrays (in serial) and the reason why they fail is due to a dead LED in the array or a bad driver with cheap “made in China” capacitors.

It’s all about the price.

I’ve had 5 Watts Philips bulbs (obviously more expensive than cheap Chinese ones) for almost a decade and not a single one has failed and they keep running perfectly fine.

[–] 3 pts

This is the type of bulb they were using.

[–] 1 pt
[–] 0 pt

the reason why they fail is due to a dead LED in the array or a bad driver

[–] 0 pt

Yay, have the same LED bulbs for 50 fucking years.

I've gone through so many LED revelations and basically stopped using the previous kind I got, several times. The only failures were from ones I used for many hours daily, and a shitty brand (EarthTronics) that had multiple failures.