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The vast majority of electrical problems are due to bad connections,
for instance loose or corroded terminals.
Another possibility is an indication problem with the voltmeter.
Connect a separate v ...

Here is another way to override copilot's trim switches.

Wow Eric, you went to a lot of work to help out aircraft owners and builders.
Your excellent documentation will allow even a complete novice to build an
overvoltage protection circuit. I like the ...

There is a discussion right now on Vansairforce about the GTR 200 and headsets.
https://vansairforce.net/threads/headset-coexistence.232642/
Maybe someone there can advise you.

Try using an audio isolator transformer, $9 at Amazon.

It looks like the insulation has deteriorated, but the metal is still in good
condition. Can you replace the insulation with something, perhaps a piece of
plastic tubing or a hard plastic bushing ...

Thanks Eric for great advice.

It takes a lot less voltage and current to hold a relay closed than it does to first energize it.
Just because a circuit breaker is marked "5A" doesn't necessarily mean that it will trip at ...

Yes, Bob performed an autopsy.
http://forum.matronics.com/viewtopic.php?p=460530
.
http://www.aeroelectric.com/Pictures/Battery_Failures/PC680_12SEP2016/11_Inter-cellconnectorweldfailure.jpg

I also had a PC680 battery fail open due to a broken internal weld. You can read about it here:
http://forums.matronics.com/viewtopic.php?t=16762906
Luckily my Rotax 912uls does not depend on the a ...

Finn, I gather that your engine ignition system is electrically dependent.
What type and brand is it?

I looked at a couple of glass fuses in my parts drawer. They are rated at 250
volts. I speculate that the voltage rating has to do with the distance between
the terminals. Glass fuses are an in ...

From what I have read on the internet, the Becker E-10 error indicates an antenna
problem which could be from damaged coax, poor coax connections, or a poor ground plane.
There could also be a pr ...

I made a low voltage warning LED light for the fun of it. I don't need it
because my EFIS has that feature built in. The yellow LED has a narrow
beam, thus it should be mounted so that it is aim ...

Notice that note 5 begins with, "When the battery and engine are on opposite
ends of the airplane"
Is that the situation in your airplane? What is the make and model of your aircraft?
E ...

Read this thread:
http://forums.matronics.com/viewtopic.php?t=16778818
Especially the post by Charlie and his picture of fusible links.

Make sure the connections are tight. A loose connection gets hot and could
cause a fuse to blow. Do you have a lithium battery?

The part of Z-101B in black print comes pretty close to Z-Zero if the battery bus
were eliminated. But the electrically challenged novice builder would be
overwhelmed by all of colored options. ...

Bob N., how about publishing the simplest electrical system possible?
Over the years, builders have requested extra features like an E-Bus, dual
alternators, dual batteries, brownout protection and ...

The vast majority of electrical problems are caused by bad connections, not equipment failure.
And bad connections can cause intermittent symptoms as the resistance varies.
It is great that you foun ...