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Default SBC lamp holders

I appreciate I'm probably looking in all the wrong places but I
don't seem able to find any surface mount small bayonet cap lamp
holders, any got any idea's?

Thanks.


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"Kaptain Kremin" wrote in message
...
I appreciate I'm probably looking in all the wrong places but I
don't seem able to find any surface mount small bayonet cap lamp
holders, any got any idea's?

Thanks.

If you mean a Small Bayonet Connector Batten Holder, then here's one

http://www.ryness.co.uk/ProductDetai...ProductID=2311

There are a lot more search hits for these, so have a look around yourself
on the web.





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"BigWallop" wrote in message
om...

"Kaptain Kremin" wrote in message
...
I appreciate I'm probably looking in all the wrong places but I
don't seem able to find any surface mount small bayonet cap lamp
holders, any got any idea's?

Thanks.

If you mean a Small Bayonet Connector Batten Holder, then here's one


http://www.ryness.co.uk/ProductDetai...ProductID=2311

There are a lot more search hits for these, so have a look around yourself
on the web.


I've just found out that a search for SBC Batten brings up hundreds of
hits. :-)



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Default SBC lamp holders


"BigWallop" wrote in message
om...

"Kaptain Kremin" wrote in message
...
I appreciate I'm probably looking in all the wrong places but I
don't seem able to find any surface mount small bayonet cap lamp
holders, any got any idea's?

Thanks.

If you mean a Small Bayonet Connector Batten Holder, then here's one

http://www.ryness.co.uk/ProductDetai...ProductID=2311

There are a lot more search hits for these, so have a look around yourself
on the web.


What I would like to find is a GU10 connector batten holder. There are
plenty with wire connections* but I can't seem to find the GU10 equivalent
of a SBC batten holder.

* see: http://www.nationallampsandcomponent...amp-Holders/21

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Default SBC lamp holders


"Malcolm H" wrote in message
...

"BigWallop" wrote in message
om...

"Kaptain Kremin" wrote in message
...
I appreciate I'm probably looking in all the wrong places but I
don't seem able to find any surface mount small bayonet cap lamp
holders, any got any idea's?

Thanks.

If you mean a Small Bayonet Connector Batten Holder, then here's one


http://www.ryness.co.uk/ProductDetai...ProductID=2311

There are a lot more search hits for these, so have a look around

yourself
on the web.


What I would like to find is a GU10 connector batten holder. There are
plenty with wire connections* but I can't seem to find the GU10 equivalent
of a SBC batten holder.

* see: http://www.nationallampsandcomponent...amp-Holders/21



When you see the price of them
http://www.litebulbs.co.uk/product/2...-bulb-set.aspx you'll see why they are not popular. :-)





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On 27 Nov, 10:58, "Malcolm H" wrote:

What I would like to find is a GU10 connector batten holder. There are
plenty with wire connections* but I can't seem to find the GU10 equivalent
of a SBC batten holder.


Most GU10 lamps run hot, so connecting right next to the base isn't a
good idea, especially not with screw terminals and a lamp that's
switched on and off a lot. Hence the pigtail leads to take you
somewhere cooler.
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"Andy Dingley" wrote in message
...
On 27 Nov, 10:58, "Malcolm H" wrote:

What I would like to find is a GU10 connector batten holder. There are
plenty with wire connections* but I can't seem to find the GU10
equivalent
of a SBC batten holder.


Most GU10 lamps run hot, so connecting right next to the base isn't a
good idea, especially not with screw terminals and a lamp that's
switched on and off a lot. Hence the pigtail leads to take you
somewhere cooler.


The holder and bulb referenced in the previous post (from BigWallop) is
specified to produce light equivalent to a 75W tungsten bulb yet is consumes
only 15W. I would not expect this to run hot!

I have a GU10 bulb with 18 LEDs which consumes 1-2W producing no heat
detectable by finger yet it produces a very useful amount of light.

What leads you to believe that GU10 lamps run hot?

Malcolm

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On 27 Nov, 13:58, "Malcolm H" wrote:

What leads you to believe that GU10 lamps run hot?


I don't, I wrote that _most_ GU10 lamps run hot. The whole design of
the GU10 lampholder was to cope with this, and also to do it safely
for 240V. Voltage and safety issues aside, the old straight skinny
pin GU4 base of the "classic" 12V dichroic was a reliability
nightmare. The spring pressure on the contacts isn't enough for
something that's temperature cycled and they'll develop high
resistance contacts (cue overheating and burnt insulators) after a few
years.

The fact that many GU10 lamps, and an increasing number of them, are
now some "cold" technology doesn't change the original reasons behind
the design of the lampholder. Nor is it particularly likely that we'll
see many "cold use only" lampholders, for risk that some careless
Driveller plugs a "hot" lamp into it afterwards.

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"Andy Dingley" wrote in message
...
On 27 Nov, 13:58, "Malcolm H" wrote:

What leads you to believe that GU10 lamps run hot?


I don't, I wrote that _most_ GU10 lamps run hot. The whole design of
the GU10 lampholder was to cope with this, and also to do it safely
for 240V. Voltage and safety issues aside, the old straight skinny
pin GU4 base of the "classic" 12V dichroic was a reliability
nightmare. The spring pressure on the contacts isn't enough for
something that's temperature cycled and they'll develop high
resistance contacts (cue overheating and burnt insulators) after a few
years.

The fact that many GU10 lamps, and an increasing number of them, are
now some "cold" technology doesn't change the original reasons behind
the design of the lampholder. Nor is it particularly likely that we'll
see many "cold use only" lampholders, for risk that some careless
Driveller plugs a "hot" lamp into it afterwards.


What temperature does a 50Watt GU10 lamp get to? What temperature does
50Watt GLS lamp get to? What's the difference between an ABS GU10 Batten
Holder and an ABS BC Batten Holder?



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On 27 Nov, 15:50, "BigWallop" wrote:

What temperature does a 50Watt GU10 lamp get to? *What temperature does
50Watt GLS lamp get to? *


Much the same for both lamp, however the lampholders and contacts get
a lot hotter as they're smaller and closer to the heat source, so
there's less loss of heat between source and contacts.

Also GU10 aren't really the problem, it was the even smaller GU4
where this seriously affected reliability.



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Kaptain Kremin wrote in
message ...
Snip

Thanks all. I did actually Google and seemed to get loads of
links to lamps and all sorts of other things but no holders.

Thanks again.


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"Andy Dingley" wrote in message
...
On 27 Nov, 15:50, "BigWallop" wrote:

What temperature does a 50Watt GU10 lamp get to? What temperature does
50Watt GLS lamp get to?


Much the same for both lamp, however the lampholders and contacts get
a lot hotter as they're smaller and closer to the heat source, so
there's less loss of heat between source and contacts.

Also GU10 aren't really the problem, it was the even smaller GU4
where this seriously affected reliability.



So the design of the GU10 batten holder, I presume, would compensate for the
hotter terminal contacts? If not, why not? Surely the designer and
manufacturer would know that the contacts get hotter because they're closer
to the heat source?

Now I'm confused.



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