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Speedy11(at)aol.com
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 Posted: Fri Apr 09, 2010 5:48 pm Post subject: Lithium backup power |
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Bob,
You've probably already heard about this. Any comments?
The huge advancements in lithium battery technology that have improved consumer products ranging from cell phones and laptop computers to electric cars will soon arrive in aircraft. Mid-Continent Instruments recently certified an emergency power supply known as the MD835, which is designed to keep electric attitude indicators and other critical avionics working when the aircraft systems that power them fail.
Stan Sutterfield
[quote][b]
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nuckolls.bob(at)aeroelect
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| Posted: Sun Apr 11, 2010 5:56 am Post subject: Lithium backup power |
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At 08:46 PM 4/9/2010, you wrote:
| Quote: | Bob,
You've probably already heard about this. Any comments?
The huge advancements in lithium battery technology that have improved consumer products ranging from cell phones and laptop computers to electric cars will soon arrive in aircraft. Mid-Continent Instruments recently certified an emergency power supply known as the MD835, which is designed to keep electric attitude indicators and other critical avionics working when the aircraft systems that power them fail.
Stan Sutterfield
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Sure. Li-Ion has been taking hold in emergency back-up
batteries for some years. They're particularly well
suited to situations that do not call for humongous
discharge (cranking) and charge (dual 600A generators)
currents.
A couple years ago I evaluated the 7V Li-Ion cartridges
from one of the famous hand-tool manufacturers . . . pretty
good batteries but still a pain in the arse for doing
a graceful system integration.
My personal design goals will continue to move forward
with the notion that it's better to build a failure-tolerant
system than patch on emergency back-up band-aids. The
artfully crafted, maintained and operated system will not
experience an emergency.
Bob . . . [quote][b]
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