| General > General Technical Chat |
| LED LIGHTS. Any good flicker free ones? |
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| IanB:
--- Quote from: bigfoot22 on January 21, 2023, 09:15:25 am ---That might be because you are viewing the images on a LED screen? --- End quote --- No, I have actually tried "daylight" fluorescent tubes, but I really don't like them. Just personal preference. I have Philips warm white (3000 K) T12 tubes in my garage with a CRI of 88 and I find the light quite pleasant. I hope they last, because it seems fluorescent tubes are going to be banned before long and LEDs will be the only option. |
| wraper:
Maybe buy bulb models also available in EU. Significantly flickery bulbs are prohibited here and every bulb must have a test report (fiche) like this https://www.v-tac.eu/images/certificates/Fiche/217351.pdf The easiest way to test for flickering is with smartphone camera with anti banding disabled. Also if bulb has an SMPS inside, it should be flicker-free. |
| james_s:
--- Quote from: EPAIII on January 21, 2023, 09:14:37 am ---I changed all the incandescent tubes in my house and shop to the Sunco brand LEDs sold on the web. They can be connected directly to the AC power so I also removed all the ballasts. This not only improves reliability but also is more efficient as the ballasts eat up power. I did not need to change the fixtures, but did replace two due to broken plastic lenses. More light in all areas with fewer bulbs. I now have two or three tubes in the four tube fixtures. Zero problems for over three years now. No dimming. No flicker - I had a lot before the change. No problems of any type. One thing I have noticed is they will glow for a second or two after being turned off. So they probably have a longer persistence than many brands. --- End quote --- LED lights will glow visibly on a shockingly low amount of current. The LED shop light over my workbench glows dimly when it's switched off due to capacitive coupling. The lights in my girlfriend's kitchen have the switch on the neutral (a can of worms I've been meaning to open at some point) and the LED fixture I installed glows noticeably when it's off. |
| james_s:
--- Quote from: bigfoot22 on January 21, 2023, 09:15:25 am --- --- Quote from: IanB on January 21, 2023, 08:33:31 am ---Wow. The stark white glare of the light in your work area gives me a headache just from looking at the photo. Sooner you than me. IMHO, colours "popping" is more to do with the CRI than to do with the colour temperature. I have GE "High Definition" and Philips "Ultra Definition" bulbs, both in warm white, that give very nice colour rendition in spite of the warm tone. --- End quote --- That might be because you are viewing the images on a LED screen? Who knows! I will consider getting some warm white high CRI tubes, thankfully because the ballast can accept any T8 36w bulb I can swap them out for just the price of the tubes. Can't say the same for LED. I did get some warm white tubes thrown in with the light batten for free that I can try out too. --- End quote --- There are two types of LED retrofit tubes on the market. One type is meant to work with the original ballast in place, and the other type you bypass the ballast and wire it straight to the line. Both fit in the existing fixtures. I have some Philips LED tubes in my kitchen and they work well, elsewhere I've stuck with the T8 fluorescent, I've always been fascinated by lighting and LEDs while great are unfortunately a bit boring. |
| Psi:
Once you go LED strip you never go back. Get some good quality strips and be done with it, ideally 3x (warm white, cool white and amber) for mixing as desired. Or you can go high CRI warm white + RGB strip. |
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