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Posted for "John Schroeder" <jschroeder@perigee.net>:
Colyn -
The LED's needed dropping resistors to keep the current in limits. I'm
running a 12 volt system and it takes 560 ohm resistors to drop voltage. For
the B&C voltage regulators, low voltage flasher, there is an extra 560 across
the + and neg leads of the LED's.
The lamps come with caps and I made the lettering by printing to a piece of
acetate (overhead projector slide) - black background and clear lettering. The
lamps are really high quality and I have an estimate from NKK of $160 to make
up a set of 12 lenses (opaque black with clear lettering. The ones I made let
a little light through so the lens looks a trifle fuzzy.
I have a .pdf catalog for the lamps, electrical schematics and a few more
pictures of the annunciator construction if you are interested. Let me know.
Cheers,
John
On Tue, 30 Jan 2007 23:37:22 -0500, colyncase on earthlink
<colyncase@earthlink.net> wrote:
They are NKK LED lamps that I wired into various circuits. I used an electrical design from someone else, modified it for my needs and then built the panel.
Does NKK make the lenses also? ...and are the LED's 28V?
I used the honeywell annunciators that Lancair used to sell (14V) and had to put in voltage dividers everywhere to get it to work. ....time consuming.
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