General > General Technical Chat
Biden admin moving forward with light bulb bans in coming weeks
james_s:
I wish more LED bulbs had a perfect spectrum with no flicker. It would also be nice if somebody would perfect one that does the same cozy warm shift as incandescent. Some at least attempt but only get it about 70%. I have a bunch of Philips Hue RGB bulbs and those do a pretty good job but the red is an orange-red rather than a true deep red so yellow is kind of a sickly greenish. As I've said before, LED bulbs have enough advantages that I use them pretty much exclusively for general illumination but if energy were free I'd go back to incandescent for many of my lights. The heat is beneficial around 75% of the year here, my gas furnace is a more efficient way to heat but again if energy were free that wouldn't matter.
5U4GB:
The problem is that people go out and buy the cheapest lights they can find off Aliexpress and then wonder why they're getting blue-tinted flickering. I must admit I was surprised by these ones given how much junk is out there, but they've got good-quality diffusers to get an even colour spectrum and don't flicker at all. They've also got a massive heatsink that's bigger than the entire rest of the luminaire, good-quality electronics... and a price to match.
Another problem with many cheap LED lights is that you're getting the raw LED output, or close to it, so they can be advertised as 6.023e23 lumens rather than sacrificing a small amount of output to get better-quality lighting. And then throw in some Gluxon capacitors... and the metal cap on the end is fine for a heatsink, right?
tooki:
--- Quote from: james_s on April 13, 2023, 03:20:20 am ---It would also be nice if somebody would perfect one that does the same cozy warm shift as incandescent. Some at least attempt but only get it about 70%. I have a bunch of Philips Hue RGB bulbs and those do a pretty good job but the red is an orange-red rather than a true deep red so yellow is kind of a sickly greenish.
--- End quote ---
They exist, using neutral white and very warm white LEDs, blending as needed. Very different (superior) effect than RGB bulbs.
tom66:
--- Quote from: tooki on April 13, 2023, 08:52:26 am ---
--- Quote from: james_s on April 13, 2023, 03:20:20 am ---It would also be nice if somebody would perfect one that does the same cozy warm shift as incandescent. Some at least attempt but only get it about 70%. I have a bunch of Philips Hue RGB bulbs and those do a pretty good job but the red is an orange-red rather than a true deep red so yellow is kind of a sickly greenish.
--- End quote ---
They exist, using neutral white and very warm white LEDs, blending as needed. Very different (superior) effect than RGB bulbs.
--- End quote ---
I have a Philips dimmable LED bulb that does that, and it works very well indeed. It even fades out like an incandescent when the mains is turned off, though a tad quicker. I used to have a dimmable CFL but it was very weird. It would only 'start' at about 50% brightness and then you could run it down to around 10%. Made for a clunky interface so wouldn't recommend it.
I now have some Ikea TRADFRI smart bulbs that have a cool white and warm white LED in them in addition to the RGB element, so they can produce cool and warm white at high brightnesses and still offer the gimmick of colour mode (kinda fun for Halloween/Xmas time).
SiliconWizard:
--- Quote from: tooki on April 13, 2023, 08:52:26 am ---
--- Quote from: james_s on April 13, 2023, 03:20:20 am ---It would also be nice if somebody would perfect one that does the same cozy warm shift as incandescent. Some at least attempt but only get it about 70%. I have a bunch of Philips Hue RGB bulbs and those do a pretty good job but the red is an orange-red rather than a true deep red so yellow is kind of a sickly greenish.
--- End quote ---
They exist, using neutral white and very warm white LEDs, blending as needed. Very different (superior) effect than RGB bulbs.
--- End quote ---
Can you point us to some references? At a reasonable price point?
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version