If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

--

Jeff

On Tuesday, 28 August 2018 10:22:45 UTC+1, Jeff Layman wrote:
If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

unfortunately they have negative value.


NT

In article ,
wrote:
On Tuesday, 28 August 2018 10:22:45 UTC+1, Jeff Layman wrote:
If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

unfortunately they have negative value.

Yes - if ever there was a fitting best replaced with LED, it is an outside
flood light. Those linear halogens seem to have a poor life - even more so
if unbranded types.

--
*WHAT IF THERE WERE NO HYPOTHETICAL QUESTIONS?

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Dave Plowman (News) wrote:
In article ,
wrote:
On Tuesday, 28 August 2018 10:22:45 UTC+1, Jeff Layman wrote:
If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

unfortunately they have negative value.

Yes - if ever there was a fitting best replaced with LED, it is an outside
flood light. Those linear halogens seem to have a poor life - even more so
if unbranded types.

However, widely used in theatrical stage floodlights. The killer was
excess heat.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

Who remembers the filament strip lights used in display cabinets to make
things sparkle? I have four of these and the way I keep them from blowing is
to wire them in series, they last for years like that.
Obviously not for me but when visitors come its nice to have a talking
point.
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"charles" wrote in message
...
In article ,
Dave Plowman (News) wrote:
In article ,
wrote:
On Tuesday, 28 August 2018 10:22:45 UTC+1, Jeff Layman wrote:
If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

unfortunately they have negative value.

Yes - if ever there was a fitting best replaced with LED, it is an
outside
flood light. Those linear halogens seem to have a poor life - even more
so
if unbranded types.

However, widely used in theatrical stage floodlights. The killer was
excess heat.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On Tue, 28 Aug 2018 15:32:19 +0100
charles wrote:

In article ,
Dave Plowman (News) wrote:
Yes - if ever there was a fitting best replaced with LED, it is an
outside flood light. Those linear halogens seem to have a poor life
- even more so if unbranded types.

However, widely used in theatrical stage floodlights. The killer was
excess heat.

Indeed - a bird's nest appeared on the halogen one I put out the front,
so it couldn't be used because of the fire risk. We now have a couple
of LED floodlights that work better anyway - they seem to give a more
even illumination with less dazzle, even though they're mounted lower
than the old one.

On 28/08/18 14:29, Dave Plowman (News) wrote:
In article ,
wrote:
On Tuesday, 28 August 2018 10:22:45 UTC+1, Jeff Layman wrote:
If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

unfortunately they have negative value.

Yes - if ever there was a fitting best replaced with LED, it is an outside
flood light. Those linear halogens seem to have a poor life - even more so
if unbranded types.

I think it depends on how much use they get. We have a couple of PIRs
using 78mm bulbs and both have had the bulb replaced only once in 6
years. And as for replacing with leds, the light output from a led is
considerably lower in lumen value to a halogen. Are there any 78mm leds
which provide even 1000 lumen? The linear halogen is 2200. And, I guess,
it depends also on how easy they are to replace; for an awkward position
I think a led would win every time,

--

Jeff

In article ,
Jeff Layman wrote:
On 28/08/18 14:29, Dave Plowman (News) wrote:
In article ,
wrote:
On Tuesday, 28 August 2018 10:22:45 UTC+1, Jeff Layman wrote:
If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

unfortunately they have negative value.

Yes - if ever there was a fitting best replaced with LED, it is an outside
flood light. Those linear halogens seem to have a poor life - even more so
if unbranded types.

I think it depends on how much use they get. We have a couple of PIRs
using 78mm bulbs and both have had the bulb replaced only once in 6
years. And as for replacing with leds, the light output from a led is
considerably lower in lumen value to a halogen. Are there any 78mm leds
which provide even 1000 lumen? The linear halogen is 2200. And, I guess,
it depends also on how easy they are to replace; for an awkward position
I think a led would win every time,

There are plenty of LED array floodlights whixch give a high output. See
CPC: EG
https://cpc.farnell.com/pro-elec/pel...30w/dp/LA05794

and there are more powerfull ones, too.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

and there are more powerfull ones, too.


Ah! The dazzle the people across the road lights that people cannot get the
hang of aiming correctly.

On 28/08/18 17:22, charles wrote:
In article ,
Jeff Layman wrote:
On 28/08/18 14:29, Dave Plowman (News) wrote:
In article ,
wrote:
On Tuesday, 28 August 2018 10:22:45 UTC+1, Jeff Layman wrote:
If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

unfortunately they have negative value.

Yes - if ever there was a fitting best replaced with LED, it is an outside
flood light. Those linear halogens seem to have a poor life - even more so
if unbranded types.

I think it depends on how much use they get. We have a couple of PIRs
using 78mm bulbs and both have had the bulb replaced only once in 6
years. And as for replacing with leds, the light output from a led is
considerably lower in lumen value to a halogen. Are there any 78mm leds
which provide even 1000 lumen? The linear halogen is 2200. And, I guess,
it depends also on how easy they are to replace; for an awkward position
I think a led would win every time,

There are plenty of LED array floodlights whixch give a high output. See
CPC: EG
https://cpc.farnell.com/pro-elec/pel...30w/dp/LA05794

and there are more powerfull ones, too.

That's fine, but it isn't a 78 mm equivalent led, more similar to a
118mm size (which would be 400w) and provide over 8500 lumens.

--

Jeff

So what if you underrun one of those, would it last longer?
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Dave Plowman (News)" wrote in message
...
In article ,
wrote:
On Tuesday, 28 August 2018 10:22:45 UTC+1, Jeff Layman wrote:
If anybody is interested Sainsbury's are selling off their stock of
own-brand R7s linear halogen bulbs. Both 78mm (120W) and 118mm (400W)
were on sale for 20p each in our local branch this morning.

unfortunately they have negative value.

Yes - if ever there was a fitting best replaced with LED, it is an outside
flood light. Those linear halogens seem to have a poor life - even more so
if unbranded types.

--
*WHAT IF THERE WERE NO HYPOTHETICAL QUESTIONS?

Dave Plowman London SW
To e-mail, change noise into sound.