General > General Technical Chat
LED LIGHTS. Any good flicker free ones?
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IanB:
I always choose "warm white" (2700 K). I much prefer the warm relaxing light quality, similar to incandescent light. Anything like 5000 K or daylight, I find almost painful to experience. It's cold, clinical, industrial, harsh.

Another important thing is, whatever color temperature you choose, make sure it has a good CRI, 90+ or 95+, for good color rendition. That is also really important for eye comfort.
themadhippy:

--- Quote ---I want to join the LED bandwagon but can't because of the flickering issues, I have to use CFL or Incan or T5-T8 fluro.
--- End quote ---
you are aware the el cheapo standard florry fittings  flickers?its good enough to be a safety issue with rotating machines.
james_s:
Did any T5 fixtures over there use magnetic ballasts? Here the T8 lamps 4' and larger have always been electronic ballast and so have the larger T5 lamps. The only time I saw magnetic ballasts was with lamps small enough to use a choke and now those are all gone due to regulations mandating electronic ballasts. I'm not convinced there was a benefit to moving small lamps from choke ballasts to the cheap nasty electronic ballasts that are unreliable RFI bombs but it is what it is.
IanB:
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.
EPAIII:
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.
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