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Are these as bright as your pathway Leds
Ian?
Frank Mc
----- Original Message -----
Sent: Wednesday, April 24, 2002 8:20
PM
Subject: RE: RE: White LED Lighting...
was RE: [ukha_d] Re: ADSL vs Cable
>as an aside, if we don't get a European supplier, is
anyone interested in
>chipping in for some of the LEDs from
Computronics. I think it works out at
>about 60p each. ?
Me,
me
me
Ian B
Original
Message:
-----------------
From:
Ian Lowe ian@xxxxxxx
Date: Wed,
24 Apr 2002 10:00:23 +0100
To: ukha_d@xxxxxxx
Subject:
RE: White LED Lighting... was RE: [ukha_d] Re: ADSL vs
Cable
yeah,
I found a company in korea doing MR14 MR16
sized
replacements for the small
Lv Halogens, in 20W equivelants. These were
clusters of 15 LEDs, each
producing about 3Cd..
Since digging
more
and more, I found a maglite like torch quiting a 42
Candela output in
white, using THREE LEDs!! it was also 100,000 year (Ten
Years continuous
use) LED life, and about 100 hours on three AA cells..
so I had a
further rummage, and found what I believe to be the highest rated
white
LEDS available on the market now...
12 Candela units, from
computronics
in Australia. (they are selling a bag of
500 for about ?300 +
shipping)
The bizzare thing for me is this:
the 2500mcd ones
use
20mA at about 3.8V optimal..
And the 12000mcd ones, despite being
nearly five times brighter use, er,
20mA at about 3.8V
I'm
totally
smitten!!
The idea of having a cool crisp light (I like a slight
blue
tint at the best
of times, so the lack of any "red" component doesn't
bother me) that can be
used with normal usage patterns for 25 years and
uses about >ONE< Watt in
place of a 50W Halogen, whilst producing
an
equivelant 80W light level is
pretty amazing..
I'm having ideas
of
totally cool under cupboard lighting, but having twice
as much light for
about 4% of the leccy... :)
more research required...
as an
aside, if we don't get a European supplier, is anyone interested
in
chipping in for some of the LEDs from Computronics. I think it works
out
at
about 60p each. ?
Ian
-----Original
Message-----
From: paul_watkin [mailto:paul_watkin@xxxxxxx]
Sent: 23
April 2002 20:31
To: ukha_d@xxxxxxxSubject: White LED
Lighting... was RE: [ukha_d] Re: ADSL vs Cable
Nichia have the
brightest white LED's on the market at about 6.4cd in
a T1 3/4 package
or
3.2cd in T1
http://www.nichia.co.jp
Not sure
who
in Europe holds a disty franchise for Nichia though, try
Arrow, EBV
somebody like that. I'll try and find out who it
is
tomorrow.
Other
companies to look at are Panasonic, Lumiled (Agilent and
Philips Joint
venture to replace the lightbulb with led's) and also
Agilent
Technologies.
Although you would probably need an account with
somebody
like Arrow
or EBV to get access to stuff from the above
suppliers.
Regards
Paul
--- In ukha_d@y...,
"PatrickLidstone" <patrickl@t...> wrote:
> >
> >
Due
to really awful search functions (and every electrical
appliance
>
> containing LEDs), I can't find details. There is a 3mm LED
on
the
> Maplin
> > site
> > (http://maplin.co.uk/products/details.php?
>
cartid=0204231835361451415&modulec
> >
ode=&moduleno=17821&manufacturer=Nichia). I based my thoughts
on
> the
> > variety of LED torches around.
>
>
Rapid Electronics do a separate opto-electronics catalogue
-
probably
> worth a gander.
>
> You'll find full tech
specs on RS (Radio Spares) and Farnell
websites
> for a huge range
of
LEDs.
>
> Patrick
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