Is this an "instant on" bulb or is there a warm-up period before the bulb reaches full brightness?
1559666
All fluorescent bulbs take time to warm up to reach full brightness, so yes this bulb takes about 3 minutes to warm up. It is a high-quality bulb though and produces very nice white light.
1548385
I have these bulbs in a touch lamp. I really didn't notice the delay. There is one, but it is so minimal, it doesn't really make a difference to me. They do the job I bought them for and that is all that counts. Hope this helps.
375964
They come on quickly but, like lots of other fluorescents, take a few minutes to get up to full intensity. I would say they are a bit faster then some other bulbs I bought in getting to full brightness .
1966792
if you cover the photo cell(block light from entering the cell), the light comes on in approx 1-2 minutes. uncover the cell and it goes off in aprrox 30-45 seconds. this is what you do to check if light is operational. if light does not come on and there is electric power to light, the bulb is probably burned. if the light stays on, the photo cell needs repalcing. instruction usually accompany the light when purchased.
778247
Yes i been useing cfls in one of mine for about a year, but in cold weather it takes a few minutes to warm up to full brightness, i could not stand using cfls in the house so i am using them in my heath/zenith.
581834
You have to turn the lamp on, but it won't be "on" until the timer completes the circuit (i.e. until it hits the on period that you want)
375968
Just like someone else mentioned, they come on almost instantly (there's a fraction of a second delay), but it does take maybe 10 seconds or so before they reach their maximum brightness. The color of the light is definitely closer to that of an incandescent bulb than a lot of other fluorescents, but is still not exactly like the light that you'd get from an incandescent bulb.
1398553
There isn't a flicker or a delay. However the light does have to warm up so it isn't as bright when you first turn it on. Also depending on who installed your light fixture when you first put the light bulb in keep the light turned on for an hour. We had to hire a electrician to tell us this because the builders that built our house messed up on the wiring and our light was burning out every six months in one of our bathrooms. The rest of the house the lights have lasted over three years now.
2080628
Unfortunately i didn't end up keeping this bulb. I bought 3 different ones and the one i picked was from g7. What i found with all of them was there was a short delay with start up its nothing be worried about.its hardly noticeable and is about 1/2 second.
1774322
It depends on how you use it. a) you must have the right (gu24) base / socket holder b) the bulb may take a bit (1 min) to warm up - if the need for light is for a short period then probably use a regular bulb - however if just placing outside (day/night sensor) should be fine.
1827350
In my opinion, yes. This was the main reason I switched, immediate light, no flickering or warming up.
716959
My experience is instant on. These bulbs come on instantly to full intensity even on the coldest nights, -20f.
484950
It gets fairly warm, about the same as a conventional 60 watt bulb. It is rather huge and may not fit in place of a standard bulb. It is also very bright as it is the equivalent of a 300 watt conventional.
2093205
I have the bulb in a garage so it is usually dark when it goes on. I am afraid I cannot answer your question to satisfaction. But I like the light and the action of the bulb.
1112586
add to my previous answer..I jusst found a box fom the bulb so here's a more exac tpiece of info: it has a section rating bulbs generally from warm to cool and the maaark for this one is on the waarmest end of he bar with a rating of 2700K . I thought tht 300K0 was the brightest. IF so, then I feel safe in saying that the light from this bulb rates as warm. Also the box xays it comes with a 30 day guarantee. Don't know how it would be honored if it fails, but it's one more reason to take a chance. Good luck.
453560
You should definitely see a VERY apparent and bright light. If you take it into a dark room and don't see any light coming from the bulb, that means it's not working properly. In fact you shouldn't really even need a dark room, it's bright and you shouldn't look at it directly.
1287885
Not that I've noticed. I've never touched the bulb while it's on, and don't feel any heat while it's in use.