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TOT Those new light bulbs.



 
 
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  #1  
Old January 21st 14, 03:02 PM posted to uk.tech.digital-tv
[email protected]
external usenet poster
 
Posts: 41
Default TOT Those new light bulbs.

Apologies for raising this here, but I don't know
another forum where the topic might get taken seriously.

These new light bulbs - the ones with the little
bulb inside an old style casing - seem to blow
very quickly. They don't seem to last anything
like the promised coulple of years.

Or have I just been unlucky?

PS You can get previous Euromillions
results on TVE Internacional text page 472.
  #2  
Old January 21st 14, 03:05 PM posted to uk.tech.digital-tv
James Harris
external usenet poster
 
Posts: 3
Default TOT Those new light bulbs.

wrote in message
...
Apologies for raising this here, but I don't know
another forum where the topic might get taken seriously.

These new light bulbs - the ones with the little
bulb inside an old style casing - seem to blow
very quickly. They don't seem to last anything
like the promised coulple of years.


You could try uk.d-i-y.

James


  #3  
Old January 21st 14, 06:03 PM posted to uk.tech.digital-tv
Woody[_4_]
external usenet poster
 
Posts: 2,088
Default TOT Those new light bulbs.

wrote in message
...
Apologies for raising this here, but I don't know
another forum where the topic might get taken seriously.

These new light bulbs - the ones with the little
bulb inside an old style casing - seem to blow
very quickly. They don't seem to last anything
like the promised coulple of years.

Or have I just been unlucky?

PS You can get previous Euromillions
results on TVE Internacional text page 472.



Presuming you mean halogens - usually rated about 20% less
than the GLS equivalent, i.e 48W halogen for a 60W GLS? They
should last better and longer than a conventional bulb.

It is unlikely you have been unlucky assuming you are buying
a decent brand, so there are two options: either you have
very spikey mains, or you have poor quality light switches.

In terms of the latter, a halogen bulb has a relatively high
inrush current when first switched on. If your switch
contacts are old and/or bouncing (and possibly arcing) it
can easily blow such a bulb. Try changing one switch where
bulbs regularly fail for a good brand such as Crabtree or MK
and see what happens.


--
Woody

harrogate three at ntlworld dot com


  #4  
Old January 21st 14, 08:13 PM posted to uk.tech.digital-tv
Brian Gaff
external usenet poster
 
Posts: 7,824
Default TOT Those new light bulbs.

Which new light bulbs. Not much to go on here.
Brian

--
From the Sofa of Brian Gaff Reply address is active
wrote in message
...
Apologies for raising this here, but I don't know
another forum where the topic might get taken seriously.

These new light bulbs - the ones with the little
bulb inside an old style casing - seem to blow
very quickly. They don't seem to last anything
like the promised coulple of years.

Or have I just been unlucky?

PS You can get previous Euromillions
results on TVE Internacional text page 472.



  #5  
Old January 21st 14, 09:59 PM posted to uk.tech.digital-tv
Graham.[_2_]
external usenet poster
 
Posts: 1,486
Default TOT Those new light bulbs.

On Tue, 21 Jan 2014 19:13:38 -0000, "Brian Gaff"
wrote:

Which new light bulbs. Not much to go on here.
Brian



I know what he means Brian. Since the light bulb "ban" the trend had
been for a quartz halogen capsule enclosed in a GLS style envelope.


--
Graham.


%Profound_observation%
  #6  
Old January 22nd 14, 12:25 AM posted to uk.tech.digital-tv
[email protected]
external usenet poster
 
Posts: 41
Default TOT Those new light bulbs.

On Tuesday, 21 January 2014 17:03:49 UTC, Woody wrote:
semiretired wrote


Apologies for raising this here, but I don't know
another forum where the topic might get taken seriously.
These new light bulbs - the ones with the little
bulb inside an old style casing - seem to blow
very quickly. They don't seem to last anything
like the promised coulple of years.
Or have I just been unlucky?


Presuming you mean halogens - usually rated about 20% less
than the GLS equivalent, i.e 48W halogen for a 60W GLS?
They should last better and longer than a conventional bulb.
It is unlikely you have been unlucky assuming you are buying
a decent brand, so there are two options: either you have
very spikey mains, or you have poor quality light switches.
In terms of the latter, a halogen bulb has a relatively high
inrush current when first switched on. If your switch contacts
are old and/or bouncing (and possibly arcing) it can easily
blow such a bulb. Try changing one switch where bulbs regularly
fail for a good brand such as Crabtree or MK and see what happens.

-- Woody harrogate three at ntlworld dot com

Many thanks. That makes sense. The bulbs are in table lamps which
have been in use for ages.

It looks like I should get new lamps - or else go back to the spiral
flourescents.

Thanks again.
  #7  
Old January 22nd 14, 12:47 AM posted to uk.tech.digital-tv
Steve Thackery[_2_]
external usenet poster
 
Posts: 2,566
Default TOT Those new light bulbs.

Woody wrote:

It is unlikely you have been unlucky assuming you are buying a decent
brand, so there are two options: either you have very spikey mains,
or you have poor quality light switches.


Actually they are famously fragile, those halogens. Because the
filament is so short compared with the filament in a normal bulb, it
has to be ultra-thin to get the right resistance. That's why they are
so delicate.

For 12V applications the filaments are really tough because they are
thick. For 240V it's a different story.

I've read somewhere that it's mostly subtle vibrations from the floor
or ceiling that does them in, although I don't know for sure whether
that is correct.

The energy saving is so minimal it isn't worth using them, in my
opinion. LED lamps are becoming available now (B&Q, IKEA, online) and
I've got them in my table lamps and uplighters. Wonderful, so long as
you make sure they're "warm white" or 2700K.

--
SteveT
  #8  
Old January 22nd 14, 02:01 AM posted to uk.tech.digital-tv
Michael Chare[_3_]
external usenet poster
 
Posts: 193
Default TOT Those new light bulbs.

On 21/01/2014 23:25, wrote:
On Tuesday, 21 January 2014 17:03:49 UTC, Woody wrote:
semiretired wrote


Apologies for raising this here, but I don't know
another forum where the topic might get taken seriously.
These new light bulbs - the ones with the little
bulb inside an old style casing - seem to blow
very quickly. They don't seem to last anything
like the promised coulple of years.
Or have I just been unlucky?


Presuming you mean halogens - usually rated about 20% less
than the GLS equivalent, i.e 48W halogen for a 60W GLS?
They should last better and longer than a conventional bulb.
It is unlikely you have been unlucky assuming you are buying
a decent brand, so there are two options: either you have
very spikey mains, or you have poor quality light switches.
In terms of the latter, a halogen bulb has a relatively high
inrush current when first switched on. If your switch contacts
are old and/or bouncing (and possibly arcing) it can easily
blow such a bulb. Try changing one switch where bulbs regularly
fail for a good brand such as Crabtree or MK and see what happens.

-- Woody harrogate three at ntlworld dot com

Many thanks. That makes sense. The bulbs are in table lamps which
have been in use for ages.

It looks like I should get new lamps - or else go back to the spiral
flourescents.

Thanks again.


I just bought an Integral LED mains light bulb from Amazon. It comes
with a 5 year warranty. If the table lamps have shades you won't see the
bulbs.

--
Michael Chare
  #9  
Old January 22nd 14, 10:17 AM posted to uk.tech.digital-tv
Woody[_4_]
external usenet poster
 
Posts: 2,088
Default TOT Those new light bulbs.

"Steve Thackery" wrote in message
...
Woody wrote:

It is unlikely you have been unlucky assuming you are
buying a decent
brand, so there are two options: either you have very
spikey mains,
or you have poor quality light switches.


Actually they are famously fragile, those halogens.
Because the
filament is so short compared with the filament in a
normal bulb, it
has to be ultra-thin to get the right resistance. That's
why they are
so delicate.

For 12V applications the filaments are really tough
because they are
thick. For 240V it's a different story.

I've read somewhere that it's mostly subtle vibrations
from the floor
or ceiling that does them in, although I don't know for
sure whether
that is correct.

The energy saving is so minimal it isn't worth using them,
in my
opinion. LED lamps are becoming available now (B&Q, IKEA,
online) and
I've got them in my table lamps and uplighters.
Wonderful, so long as
you make sure they're "warm white" or 2700K.




Just hope that you have no AM listeners or radio amateurs
nearby as they create horrendous RFI and are known to
flicker in the presence of RF (they are diodes after all.)


--
Woody

harrogate three at ntlworld dot com


  #10  
Old January 22nd 14, 11:03 AM posted to uk.tech.digital-tv
Scion
external usenet poster
 
Posts: 52
Default TOT Those new light bulbs.

Steve Thackery put finger to keyboard:

Woody wrote:

It is unlikely you have been unlucky assuming you are buying a decent
brand, so there are two options: either you have very spikey mains, or
you have poor quality light switches.


Actually they are famously fragile, those halogens. Because the
filament is so short compared with the filament in a normal bulb, it has
to be ultra-thin to get the right resistance. That's why they are so
delicate.

For 12V applications the filaments are really tough because they are
thick. For 240V it's a different story.

I've read somewhere that it's mostly subtle vibrations from the floor or
ceiling that does them in, although I don't know for sure whether that
is correct.


I moved away from 70W halogens in my living room pendant because they
would blow with someone thumping around upstairs. Tungsten and CFL have
both been OK. I recently switched back to halogens when I got a couple of
120W ones (equivalent to 150W tungsten) and not had a problem, but I've no
idea if that's because the higher wattage necessitates a thicker filament,
or the lamp is a better quality brand.
 




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