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n103md(at)yahoo.com
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 Posted: Fri Apr 27, 2007 1:01 pm Post subject: [Fwd: 12v supply to stabilize avionics] |
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I am purchasing a 12V power supply that takes
6-24V input and gives 12V out at up to 14 A continuous.
It's a 95% efficient switcher with a quiescent current
around 10mA. We need to buy ten of them to get a
better price (about $55).
Why do I want one? Why might you want one?
I have a 1-battery airplane and don't want to rewire the
whole thing. The GPS and radios reboot if they are on when
I start the engine. During cranking, the bus voltage drops
to around 10 V, and the avionics brown out. I want that
problem to go away, and also want to keep the radio working
for a while if the alternator shuts down and the battery drains
below 10V.
So, the solution I am trying is a switching power supply that
converts anything between 6 and 24 V in to a stabilized 12V out.
with 95% efficiency, the lost power is minimal. We would like to
buy 10 units for about $55 each (+ s/h). We've accounted for
four units, so there will be six more available. Who wants one?
-bob mackey
n103md -at- yahoo.com
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ronlee(at)pcisys.net
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| Posted: Fri Apr 27, 2007 1:27 pm Post subject: [Fwd: 12v supply to stabilize avionics] |
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| Quote: | I have a 1-battery airplane and don't want to rewire the
whole thing. The GPS and radios reboot if they are on when
I start the engine. During cranking, the bus voltage drops
to around 10 V, and the avionics brown out.
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Leave avionics off while starting the plane. Cost...ZERO.
Ron Lee
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