Hi,

I'm looking for small LED assemblies, round printed circuit boards
(diameter from 1/2" to 1") with several LEDs mounted suitable for 12VDC
operation.

I want to glue these assemblies into existing car and trailer lamps for
maintenance-free 'life'..

Thanks for hints on where to find these in the US.

regards

Tor

On Feb 14, 9:41*pm, Geir Holmavatn wrote:
Hi,

I'm looking for small LED assemblies, round printed circuit boards
(diameter from 1/2" to 1") with several LEDs mounted suitable for 12VDC
operation.

I want to glue these assemblies into existing car and trailer lamps for
maintenance-free 'life'..

Thanks for hints on where to find these in the US.

regards

Tor

Why make your own when they are dirt cheap to buy ?

ebay have loads of them.

"Geir Holmavatn" wrote in message
...
Hi,

I'm looking for small LED assemblies, round printed circuit boards
(diameter from 1/2" to 1") with several LEDs mounted suitable for 12VDC
operation.

I want to glue these assemblies into existing car and trailer lamps for
maintenance-free 'life'..

Thanks for hints on where to find these in the US.

regards

Tor

LED replacement automotive bulbs that conform to regulations, already exist.
Look at, for instance

http://www.superbrightleds.com/1157.htm

Arfa

In article ,
Arfa Daily wrote:
LED replacement automotive bulbs that conform to regulations, already
exist. Look at, for instance

Are you sure there are replacement types that are approved? In Europe they
would be 'E' marked.

--


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

"Dave Plowman (News)" wrote in message
...
In article ,
Arfa Daily wrote:
LED replacement automotive bulbs that conform to regulations, already
exist. Look at, for instance

Are you sure there are replacement types that are approved? In Europe they
would be 'E' marked.

--

To be honest Dave, I'm not certain. I'm sure I have seen them on websites
where they claim to match the specs for brightness etc, so I've always
assumed that any that are deliberately manufactured as 'replacements', would
similarly match. However, I accept what you say, and they might not all be.
Are the likes of Lucas or Delco or whoever making these things yet ? I guess
that would be the best guarantee of compliance. In any event, I should think
that ones made for the job, are likely to be better in terms of brightness
and viewing angle, than something that you would cobble together yourself ??

FWIW, I don't actually like the latest generation of cars that are fitted
with LED tail and brake lights. They are invariably pulse driven, and when
your eyes do a 'flick', the pulsed LEDs leave a trail of 'dots' of light
across your vision. Most off-putting when driving at night. The roadworks
cone lamps are similarly pulsed. and create the same effect.

Arfa

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

To be honest Dave, I'm not certain. I'm sure I have seen them on websites
where they claim to match the specs for brightness etc, so I've always
assumed that any that are deliberately manufactured as 'replacements',
would similarly match. However, I accept what you say, and they might not
all be. Are the likes of Lucas or Delco or whoever making these things yet
? I guess that would be the best guarantee of compliance. In any event, I
should think that ones made for the job, are likely to be better in terms
of brightness and viewing angle, than something that you would cobble
together yourself ??



There are many retrofit lamps on the market which are certainly *not* street
legal, and for obvious reason if you see them in action. I don't know if
anyone makes any that are, but I would think the technology at least exists.

I don't think there'd be a problem using retrofit lamps for things like
license plate illumination and certainly anything inside the car, but I
would hesitate to put one in any of the external marker or signal lights.

In article , Arfa Daily
wrote:

"Dave Plowman (News)" wrote in message
...
In article , Arfa Daily
wrote:
LED replacement automotive bulbs that conform to regulations, already
exist. Look at, for instance

Are you sure there are replacement types that are approved? In Europe
they would be 'E' marked.

To be honest Dave, I'm not certain. I'm sure I have seen them on
websites where they claim to match the specs for brightness etc, so
I've always assumed that any that are deliberately manufactured as
'replacements', would similarly match.

Having played around with them many that claim this certainly are not.
An ordinary filament bulb gives an approximately 360 degree even light
output. The fitting includes a reflector to then direct that light where
needed. And this can be important with things like indicators (21 watt)
where you want them visible from a wide angle. Those multiple 'ordinary'
LED replacements simply don't do this.

However, I accept what you say,
and they might not all be. Are the likes of Lucas or Delco or whoever
making these things yet ?

I've yet to see any OEM replacements for tungsten. And those would have to
be E marked to be legal in the UK etc.

I guess that would be the best guarantee of
compliance. In any event, I should think that ones made for the job,
are likely to be better in terms of brightness and viewing angle, than
something that you would cobble together yourself ??

I'm not so sure. One problem seems to be incorporating both the LEDs and
drivers - either electronic or simple resistive - within a replacement
unit. If you modify things to use an external driver you give greater
versatility. Wide angle high power LEDs are available these days to match
a 21 watt tungsten.

FWIW, I don't actually like the latest generation of cars that are
fitted with LED tail and brake lights. They are invariably pulse
driven, and when your eyes do a 'flick', the pulsed LEDs leave a trail
of 'dots' of light across your vision. Most off-putting when driving at
night. The roadworks cone lamps are similarly pulsed. and create the
same effect.

Another example of fashion before practicality? Power consumption of such
things in cars ain't important and LEDs which are bright enough without
being pulse driven exist. More expensive, though.

--
*Shin: a device for finding furniture in the dark *

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

Another example of fashion before practicality? Power consumption of such
things in cars ain't important and LEDs which are bright enough without
being pulse driven exist. More expensive, though.



They're pulse driven to give multiple brightness levels. Low as markers,
then they get bright when the brakes are activated. It has nothing to do
with increasing the max brightness.

Note that the suggestions to buy LED car lamps has a caveat- the LED
lamps on Ebay used for turn signal applications do not present the
resistance in the flasher unit that an incandescent lamp does, so the
flasher will flash at double speed, like it does with a burned out lamp.
JR

Geir Holmavatn wrote:

Hi,

I'm looking for small LED assemblies, round printed circuit boards
(diameter from 1/2" to 1") with several LEDs mounted suitable for 12VDC
operation.

I want to glue these assemblies into existing car and trailer lamps for
maintenance-free 'life'..

Thanks for hints on where to find these in the US.

regards

Tor


--
--------------------------------------------------------------
Home Page: http://www.seanet.com/~jasonrnorth

"JR North" wrote in message
.. .
Note that the suggestions to buy LED car lamps has a caveat- the LED lamps
on Ebay used for turn signal applications do not present the resistance in
the flasher unit that an incandescent lamp does, so the flasher will flash
at double speed, like it does with a burned out lamp.
JR

The link that I posted was not to an eBay listing, which is not to say that
they don't sell on eBay, of course. However, they are at least 'up front'
about the differences and limitations, and the potential for things like
incorrect flasher speed, when you retrofit them. See

http://www.superbrightleds.com/carbulb-notes.htm


Arfa

In article , Geir Holmavatn wrote:
Hi,

I'm looking for small LED assemblies, round printed circuit boards
(diameter from 1/2" to 1") with several LEDs mounted suitable for 12VDC
operation.

I want to glue these assemblies into existing car and trailer lamps for
maintenance-free 'life'..

Thanks for hints on where to find these in the US.

regards

Tor

I bought some boards for my new deck. I have yellow lamps on some of the
posts. i put these inside some brass door pulls, look cool.
You can wire these up as you like or need. They are designed to replace those
little lamps with the two bent wires around the glass end. Many trailer lamps
use these for running lamps.

http://superbrightleds.com/hobby.htm

greg