Larry Bowen
Joined: 09 Jan 2006
Posts: 802
Location: NC, USA
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 Posted: Wed Jun 16, 2010 5:59 pm Post subject: AeroElectric-List: Active Notification of Low Voltage |
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There is a nice one here:
http://www.periheliondesign.com/
[/url]--
Larry Bowen
Larry(at)BowenAero.com
[url=http://BowenAero.com]http://BowenAero.com
On Wed, Jun 16, 2010 at 12:19 PM, Denis Walsh <denis.walsh(at)comcast.net (denis.walsh(at)comcast.net)> wrote:
[quote] Vans' carries one for $80. Pretty steep but looks elegant.
I have one similar which I got from electric Bob years ago for a lot less, but don't think he is in that business any more.
On Jun 16, 2010, at 10:05 , Charles Brame wrote:
| Quote: |
Bob, et. al.,
I'm one of the guilty ones with an electronic EFIS and no warning light for a low voltage. In a low voltage situation, my EFIS voltmeter does flash, but I have determined that isn't a sufficient warning. Thus I would like to install a low voltage warning light. To complicate matters: however, I have a generic Ford regulator that does not have a low voltage warning circuit. Is there a simple solution for this situation?
Charlie Brame
RV-6A N11CB
San Antonio
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Time: 06:19:27 AM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
Subject: Re: AeroElectric-List: Active Notification of Low Voltage
At 05:06 PM 6/14/2010, you wrote:
| Quote: | Many current OBAM aircraft have electronic EFIS and/or EIS systems
installed in their panels. Most of these systems have the
capability to monitor various engine and electrical
parameters. Limits can be programmed so that when a parameter is
outside of the set limits, this is enunciated via audio and/or
visual notification (a warning light).
Is the use of these EFIS/EIS systems adequate for proper stand alone
"Active Notification of Low Voltage"? Or is it recommended that
additional equipment be employed? This additional equipment would
be such as AEC9005, AEC9024 (when available), or other such devices
on the market.
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Your choice. The operative word is "active".
If the nature of the warning provided as a
feature of a panel mounted accessory is sufficient
to get your attention within a minute of
onset of LV, then the design goals have been
met.
The B&C LR series regulators are shipped with
a rather obnoxious yellow warning light assembly
that is guaranteed to get your attention.
It's something you can experiment with in
flight. Shut the alternator off. Judge for
yourself if the resulting indication is sufficiently
attention getting.
Bob . . .
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_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress... |
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