Matronics Email Lists

If you have no other form of electrical system health indication, the ACTIVE NOTIFICATION OF LOW VOLTAGE should be #1. This simple accessory covers annunciation of every critical failure of engine dr ...

Dear Bob,

is the Z101 source as well available as dwg file so I can taylor it to
my new project (SDS/emag/no brownout).

Sorry for the relative silence. My email service has been
on the ...

Rumen, did you resolve your antenna issue? If not, I may have a potential solution. I've got a 'thru the roof' antenna I built for a local EMS member that's too long (465 Mhz) that can be cut down to ...

Consider using relays in the junction box at the hoist motor to do all the heavy lifting. Then use a three-wire command line between the junction box and the control box. You could even get 'fancy' a ...

The Matronics e-mail servers wandered into the weeds last night and Matt is out of town until Sunday. All of my email accounts are dark. Dr. Dee and I are hauling three grand kids to Pensacola for a f ...

At 09:08 PM 7/6/2021, you wrote:

--> AeroElectric-List message posted by: "n1dw" <n1deltawhiskey>

Frank,

The only way you are going to melt that wire is likely with a dire ...

Mail coming into the matronics services is temporarily down. The Baracudda server went TU a couple days ago. Matt is working to get it replaced. I think this piece of hardware has been in service for ...

A manufacturer of ANY accessory should be cautious about
venturing outside their product into issues of aircraft architecture
and systems integration.

As we've studied over the years, off-hand re ...

[quote]The situation described in my last post is not likely to happen on an aircraft that has a fully charged battery. The most common way that rectifier diodes get damaged is by jump starting a vehi ...

What happens if an alternator is temporarily overloaded (let’s say it’s rated at 40 amps) and you draw 45 amps. Assume the battery is well maintained and fully charged. A current limiter (ANL/AML) ...

As the rpm drops on a normally functioning alternator, field voltage
goes up and available output current goes down. At some point,
the regulator saturates and the field voltage can go no higher.
T ...

Not sure what this is? Adjustable aiming point?

Unless the fixture is narrowly focused, you should get usable coverage
for both landing and taxi with the exception possibly encountered with
a tai ...

Interesting . . . I've seen some 'heavy duty' regulators in other venues as well. But I'm at a loss to recall any that even begin to draw that much field current. A prudent designer of generators and ...

Agree that part is bad. This appears to be a relabeled white-rogers 70-902 which you .can buy from allied electronics for abt$25

I think it almost a certainty that when looking INTO the power output lead of the rectifier/regulator, one sees only a pair of cathodes for two legs of the controlled bridge rectifier. When this lead ...

Alternators are inherently 'noisy' . . . meaning that their
output voltage has about 1.5 volts pk-pk ripple on
it . . . an artifact of the 3-phase rectification system.
This noise CANNOT be filtere ...

You can have the uC . . . need feedback on your success/problems.

There is hysteresis on both comparators. Those values are not calculated . . . I can expand on that now that I know which way you ...

After the server upgrade at matronics, I'm still wrestling with some email issues . . . but these too will pass . . .

In the mean time, I subjected a fully charged ETX36 lithium battery to a 40v, 1 ...

I've had some requests for the bare etched circuit board called out in the DIY amplifier project featured at http://tinyurl.com/hn28p2q

Unfortunately, there is a minimum quantity for fabricating th ...

Just a heads up to AeroElectric List membership. My email engine on Matronics has been unresponsive for the past 12 hours or so. Past history of these events often required Matt's attention to the Bar ...