Text 21580, 84 rader
Skriven 2014-11-21 06:00:00 av gregz
     Kommentar till en text av Pete C.
Ärende: Re: The history of 75
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d9dda375
"Pete C." <auxReMoVe34@wpnet.us> wrote:
> James Silverton wrote:
>>
>> On 11/20/2014 12:19 PM, Pete C. wrote:
>>>
>>> sf wrote:
>>>>
>>>> On Thu, 20 Nov 2014 10:00:09 -0500, James Silverton
>>>> <not.jim.


>>>>
>>>> I'll look for your LED lights and give them a try.  I like the LED
>>>> ceiling light over my kitchen sink and my LED flashlights are very
>>>> bright.  The only problem I have with LED is they are a cool (blue)
>>>> light and I prefer the warmer spectrum of halogen (pinker, which seems
>>>> more natural to me).  Hadn't given it any thought before this, but it
>>>> just occurred to me that maybe those who used florescent previously
>>>> prefer LED and those who used incandescent previously may prefer
>>>> halogen.
>>>
>>> I mostly switched to LED lamps here a couple years ago, using LG 60W
>>> equivalent lamps and have been very happy with them. My shop is mostly
>>> 4' T8 fluorescent lamps, but I have been experimenting with LED options
>>> there as well with some success. Prior to the LED lamps I used CFL lamps
>>> for many years with great success and all have lasted me at least 5
>>> years, most more than 7 years and still working fine prior to LED
>>> replacement.
>>>
>>> It seems that some people have really bad luck with CFLs and there seems
>>> to be no clear reason why. I have never had a CFL burn out in less than
>>> 5 years out of dozens of them and I have purchased whatever CFLs were on
>>> hand at 'Depot, Lowe's, Costco or Sam's when I needed them, not anything
>>> exotic.
>>>
>>> One thing I have found is that encapsulated CFLs, ones that are inside
>>> some sort of opaque outer shell perform badly on startup and take a good
>>> 30-45 seconds to reach full brightness where open CFLs will be at full
>>> brightness in about 2 seconds once they have had an initial hour or two
>>> of burn-in time.
>>>
>

I just wait for them to warm up. Not really good for looking for strange
noises in theyard. Got some outside and in th garage.

>
>> I have not tried encapsulated CFL's but I do know that some that I put
>> in enclosed globes seem to show signs over overheating before they go.
>> You really have to but the date of installation on the bulb base to be
>> sure how long they last. There have been some that I could swear I
>> installed last year but have been there for 3 or more years.
>
> Most CFLs indicate they are not for use in unventilated fixtures. If you
> do use them in unventilated applications they will have a shorter life
> due to overheating their ballast electronics.
>

Might think so, but I'm getting about maximum predicted life in outdoor and
indoor fixtures. I have some reservations about unenclosed and fires. You
can't use LEDs in enclosures, or life will be greatly diminished. Led
electronics can fail just like the cfls. I don't believe any if the
predicted led life's, unless they run pretty cool, which they don't, unless
fan cooled.

Cfls and LEDs are sold, but you have to read the color temperature so you
get what you want. If the color temp is not specified, I don't buy.

Greg

> I do sharpie the installation date on my lamps and I get long life out
> of CFLs. The reported short life problems are real though, as I have a
> couple friends who experience that and other friend's who like me have
> no such issues. I've investigated the homes of the friends with CFL
> issues, looked for ventilation problems, dimmers on non-dimmable lamps,
> lamp brands and even hauled over my electrical test gear to check power
> quality and I have found no explanation for their issues. They have
> power as clean as I have, use the same brands of lamps that I do, etc.
> It's really bizarre, but it will be a short lived problem now that LED
> lamps are both good and affordable.

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