Today's Message Index:
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1. 10:01 PM - Aux Battery Idea Was: Speaking of Aux Batteries (David Saylor)
2. 10:45 PM - aeroelectric digest (anthony foran)
Message 1
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| Subject: | Aux Battery Idea Was: Speaking of Aux Batteries |
We're going to remodel our panel soon. Some of the things I want to do
better than the existing setup are to simplify operation, provide anti-sag
for starting, and provide some backup power.
Most of the components I plan to install have main power and aux power
inputs. Aux power inputs (also called aircraft power 2, etc) would be
powered from the aux (anti-sag) bus. Almost everything on the aux bus
would also be primarily powered from the main bus, and only be pulling from
the aux when the main voltage is low. That's all built in to the
components.
I don't mind an extra battery, especially if I can convince myself that a
small EarthX is something I can live with. It does a few nice things,
including limiting is charge rate. But that's not what I'd like to discuss
now. I would like comments on this anti-sag idea.
I think separating the starter contactor coil from the main bus would
eliminate the timeliness issue that Bob described:
The 'trick' is all in the timing. Boost
has to initiate before the starter
contactor closes and needs to sustain
past (1) rise in battery voltage due
to expiration of inrush current or (2)
contactor opening, which ever happens
first. I'm fiddling with some ways to
get that to happen.
Here's a work in progress. Obviously not complete, no alternator shown,
lot's of detail omitted, etc, but the starter contactor power is shown.
That's the key, unless I'm missing something.
Please ignore the current ratings. They're not complete yet.
--Dave
Message 2
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| Subject: | aeroelectric digest |
Hi Matt,=C2- Is the aeroelectric list digest still being sent out. I stop
ped receiving it several weeks ago.=C2-
thought i may need to donate again so did that a few days ago. Also checked
on you list of unsubscribed email addresses and not there.regards.=C2- T
ony
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