Anyone measured flicker on Philips LEDspot ExpertColor GU10 ?
On Amazon I see few reviews about flicker,_
“However, there is a very small amount of flicker both at full brightness and when dimmed,
which is disappointing as some cheaper LEDs don’t flicker at all. ”_
and “Actually nice warm light with good color rendering, but: It flickers!
It is impossible to take photos with a digital camera (Lumix G5) or even with a mobile phone, because everything looks striped. ”
Can you measure temp. of these lamps (thermometer, thermal imager ) after 1 hour work?
How much flicker on full power or when it’s dimmed ?
I ordered several bulbs from Bulbrite from the below criteria. Mostly filament bulbs because they seem to dim extremely well and have good side output.
I had to repload the CRI result… the image was missing, implying they may have DMCA’d it, but never got a notice from google… I would not buy from that aliexpress store with the way they bully, the only way that image went missing is they reported it.
They sent me “tests” with numbers very different from my old and outdated calibration tool (which only has a problem with too much green) on aliexpress…. (and of course, it was only “tested for 2 months”)
DIY led uhome if you are reading this it never pays to be a bully!
regarding the heat comment… it creaks when turned on, this implies that it is heating rapidly. so clearly there may be an issue, I have no way to measure the temperature.
It is as advertised but nothing spectacular. The CRI is not as high as Yuji or Waveform type 95+ CRI bulbs but the output is nearly double and price slightly cheaper. These types of filament bulbs are probably your best bet if you want to use a dimmer though I did not test that yet.
Received few gu10 and mr16 ExpertColor lamps from Ebay store’s.
Very nice tint, may be slightly better, that from Soraa Vivid 3000K.
Good optics (36 grad).
Color reproduction - very nice for LED lamp (not as good , as from my etalon bulbs, Osram halogen 3000K and Solux halogen 3500K, but very close and better than many other CRI90+ lamps).
Temperture after 25…30min of work :
gu10 5.5w 230v : approx. +50…+53 (Seek Thermal xr),
6.5w 12v : approx +61+63, +60 on foto, 1min after off and removed from fixture (ambient temp. : +20 …+21).
1) philips Expertcolor gu10 5.5w in open fixture, Wofi Minit , after30min
2) philips Expertcolor mr16 6.5w in Ikea desk lamp
3) || 1min after off and removed from fixture
I am going to do an experiment. I have a ton of Lee minus Green (804). I am going to see what happens if I open these up and add a minus green filter to them.
When you say full brightness is it still on a dimmer? I could never get the flicker out on my dimmer either and Lutron are regarded as some of the best dimmers for LED
These particular ones are on a Lutron Caseta dimmer. PD-6WCL i believe. I have no flickering or anything during dimming, they get really low before just simply turning off. They’re just randomly failing, probably crappy caps.
It can tweak to Duv as well and even adjusts based on LED age (by detecting fwd voltage) to maintain 1 step eclipse. It can dim through wireless commands or via in wall dimmer which detects waveform.