nuckolls.bob(at)aeroelect
Guest
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 Posted: Mon Apr 19, 2010 7:02 am Post subject: B & C Specialties Warning Light- Would Like to Dim |
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At 09:30 PM 4/18/2010, you wrote:
| Quote: |
I'm starting a significant upgrade of the VFR-only panel in my
flying GlaStar to an IFR panel. I currently have the B & C
Specialty LR3C-14 alternator controller and will be installing the B
& C SD-20 standby alternator with a SB1B-14 controller. The
currently installed low voltage light will be replaced with a
"standby alternator on" light.
The current warning light is way too bright, especially at night. I
expect the standby alternator "on" light to be just as bright.
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When we did that design, the goal was to be sun-light viewable
in a canopy airplane (LongEz was king back then). I think Bill
was supplying 6v lamps in fixtures for extra intensity. Consider
putting a 24 volt lamp in the fixtures.
Also, consider this lamp fixture to replace the stock fixture.
http://aeroelectric.com/Pictures/Lighting/PTT_Dim_Fixture.jpg
They're scarce but not rare and a bit pricey new
but available surplus/salvage. These are mechanically
dimmed and were very common in aircraft panels of yesteryear.
They offer a drop-in, plug-n-play solution.
| Quote: | Is there an easy way to dim the light after it has come on and
gotten my attention? If dimming it is too difficult, I'm thinking
of adding a small switch so I can shut it off after it has come
on. This switch would be normally "on" and I'd have to add that as
a checklist item.
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I had some builders simply unscrew the lamp dome
along with it's bulb and stick it in their
pocket. It's the unusual flight condition that
would offer extended operations with the light
flashing.
| Quote: | I already have and will continue to use a B & C dimmer (DIM5-14 or
DIM15-14). If I recall correctly, it will handle two or three
different circuits. Can it be wired such that it will dim the
warning light while increasing the brightness of the other circuit
-- say my other panel lights -- or do all circuits have to work in
the same direction? If it can dim one circuit while brightening up
the other, I think I could find a happy medium and use existing hardware.
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You can tie the + supply for the warning lights
to you dimmed panel lamps . . . but you need to
use caution here. The panel lamps would need to
be running on high intensity for daytime viewability
of the warning lamps.
I think I'd go with mechanically dimmed fixture
or put-it-in-the-pocket. But check out the 24v
lamp option too.
Bob . . .
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