Posted by Eeyore on May 18, 2009, 11:24 pm
Rich Grise wrote:
> > Eeyore wrote:
> > legg wrote:
> >> >Tim Williams wrote:
> >> >>
> >> >> > That's right, buy a double pack of 11 or 20W CFLs for 48 pence and get
> >> >> > two packs free at my local supermarket.
> >> >> >
> >> >> > Cost per CFL = 8 pence or say 12 c US
> >> >>
> >> >> Do they have any electrolytics in them at all?
> >> >>
> >> >> Matter of fact, then they might last *longer*...
> >> >
> >> >The first one that fails, I'll tell you. ;~)
> >>
> >> Why wait. It's only 8p.
> >
> > Good point.
> >
> > BTW on the subject of CFLs, I do maintenance for a local sound venue. They
have
> > a 'white light' in he sound booth, currently a CFL in a metal shade and it
was
> > bust. I went to take the bulb out and the entire glass shattered in my hand.
> > Luckily it didn't cut me but one has to query the safety of these lamps.
> I've never had a CFL last more than a couple months.
Bizarre.
> When they come up with a, say, 5-year full-replacement warranty, I'll
> think about buying one, albeit if I'm still living in my RV, I won't
> need any anyway, since all my lights are 12v. ;-)
You can easily get 12V CFLs.
Graham
Posted by Rich Grise on May 19, 2009, 1:37 pm
On Tue, 19 May 2009 04:24:51 +0100, Eeyore wrote:
> Rich Grise wrote:
>
>> When they come up with a, say, 5-year full-replacement warranty, I'll
>> think about buying one, albeit if I'm still living in my RV, I won't
>> need any anyway, since all my lights are 12v. ;-)
>
> You can easily get 12V CFLs.
>
Yeah, but I don't _LIKE_ CFL's. And I can't imagine one fitting in any of
my sockets, and an ordinary 1813 is about 75 cents.
Cheers!
Rich
Posted by Eeyore on May 19, 2009, 3:08 pm
Rich Grise wrote:
> Eeyore wrote:
> > Rich Grise wrote:
> >
> >> When they come up with a, say, 5-year full-replacement warranty, I'll
> >> think about buying one, albeit if I'm still living in my RV, I won't
> >> need any anyway, since all my lights are 12v. ;-)
> >
> > You can easily get 12V CFLs.
> Yeah, but I don't _LIKE_ CFL's. And I can't imagine one fitting in any of
> my sockets, and an ordinary 1813 is about 75 cents.
What don't you like about them ?
Graham
Posted by Rich Grise on May 19, 2009, 3:57 pm
On Tue, 19 May 2009 20:08:12 +0100, Eeyore wrote:
> Rich Grise wrote:
>> Eeyore wrote:
>> > Rich Grise wrote:
>> >
>> >> When they come up with a, say, 5-year full-replacement warranty, I'll
>> >> think about buying one, albeit if I'm still living in my RV, I won't
>> >> need any anyway, since all my lights are 12v. ;-)
>> >
>> > You can easily get 12V CFLs.
>>
>> Yeah, but I don't _LIKE_ CFL's. And I can't imagine one fitting in any of
>> my sockets, and an ordinary 1813 is about 75 cents.
>
> What don't you like about them ?
1. Short life.
2. Inconvenient size/shape.
3. The warmingists want to shove them down our throats.
4. The mercury - well, not so much the mercury itself - heck, when we were
kids, we used to play with liquid mercury - but the total hypocrisy
when the pushers ignore even the possibility of mercury in the
landfills, not that I'm an antimercury type. What the hell, ask
anybody - I'm already mad as a hatter! ;-D
5. Why not xenon?
Thanks,
Rich
Posted by Don Klipstein on May 19, 2009, 8:53 pm
>5. Why not xenon?
As an active ingredient to produce shortwave UV in fluorescent lamps?
For one, they have not gotten the UV to be produced as efficiently.
For another, the main shortwave UV emission of xenon is 147 nm, compared
to 254 nm for low pressure mercury. The Stokes loss is much worse with
the shorter wavelength, and the shorter wavelength is harsher on
phosphors.
Xenon fluorescent lamps have been made, but they only sold well where
intolerance for mercury and/or ability to operate over a wider temperature
range outweighed their lower efficiency - until white LEDs became more
efficient than xenon fluorescent lamps.
- Don Klipstein (don@misty.com)
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> > legg wrote:
> >> >Tim Williams wrote:
> >> >>
> >> >> > That's right, buy a double pack of 11 or 20W CFLs for 48 pence and get
> >> >> > two packs free at my local supermarket.
> >> >> >
> >> >> > Cost per CFL = 8 pence or say 12 c US
> >> >>
> >> >> Do they have any electrolytics in them at all?
> >> >>
> >> >> Matter of fact, then they might last *longer*...
> >> >
> >> >The first one that fails, I'll tell you. ;~)
> >>
> >> Why wait. It's only 8p.
> >
> > Good point.
> >
> > BTW on the subject of CFLs, I do maintenance for a local sound venue. They