nuckollsr(at)cox.net Guest
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Posted: Wed Dec 27, 2006 3:34 pm Post subject: Homemade Avionics/Electrical component bench tester |
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At 09:19 PM 12/26/2006 -0800, you wrote:
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Anybody have a lead on plans/instructions for a simple homemade avionics
bench tester? One that would include a 12V battery, batter charger, and a
box with a couple of switches and 3-4 different amp circuits protected by
fuses? The idea would be to drive the various electonic components simply
by hooking them into the correct circuit, based on its current draw;
thinks like lights, flashers, servos, etc..
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Your words don't paint a lucid image of
your request. "Bench testing" is generally
the simplest combination of power supply,
input-output simulation and interconnections
to allow a technician to exercise and/or troubleshoot
any given device's capabilities. This isn't so
much a "tester" as a combination of tools
chosen and assembled for a specific task.
At the other extreme, one might consider
bench top simulators where ALL the components
of a proposed system may be operated together
and exercised to explore and prove functionality
of each system's features and inter-system
integration issues.
I'd suggest you begin by acquiring the rudimentary
test tools. Multimeter and power supply. There
are some excellent buys on the 'net. We have
perhaps a dozen power supplies in our shop of all
sizes but one of my favorites is similar to this
one:
http://tinyurl.com/ycj6wu
Many accessories can be powered up with just
a bench supply. This particular supply will allow you
to adjust voltage and measure the appliance's current
draw.
Each appliance calls for its own "test fixture" . . .
the connectors, wires, controls and input/output ports
needed to exercise that particular appliance. Here . . .
http://www.aeroelectric.com/Pictures/Tools/Test_Fixtures.jpg
is but a handful of hundreds of fixtures that I've crafted
over the years to exercise various pieces of airplane hardware
on the bench. This is why your request for A schematic
for A test fixture didn't ring any bells as to a simple
answer. Perhaps I mis-understood your question and you
can elaborate further?
Bob . . .
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