Matronics Email Lists :: View topic - GNS430W and TruTrak AP

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

GNS430W and TruTrak AP

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

bbradburry(at)verizon.net
Guest

Posted: Fri Jun 26, 2015 10:58 am Post subject: GNS430W and TruTrak AP

What happens to the voltage on the essential buss if it is loaded too

heavily and the diode does not have a heat sink installed?  



I am having my radio and my autopilot reset from time to time in flight and

I suspect that the voltage on the essential buss is dropping to a level that

causes this.  I plan to check the voltage on the buss next time I am at the

airport to try and confirm the voltage idea.



What can cause the voltage to drop if that is the problem?  High resistance

connections?  What else should I check?



Bill

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Fri Jun 26, 2015 11:34 am Post subject: Re: GNS430W and TruTrak AP

If the diode is too hot to touch, it should have a heat sink.

It is unlikely that normal current through a diode will drop the voltage enough to cause avionics to reboot.  More likely is a loose connection.

Does the problem occur while the ebus switch is on?

Joe

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Fri Jun 26, 2015 12:05 pm Post subject: GNS430W and TruTrak AP

At 01:56 PM 6/26/2015, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "Bill Bradburry" <bbradburry(at)verizon.net>



 What happens to the voltage on the essential buss if it is loaded too

 heavily and the diode does not have a heat sink installed?  



 I am having my radio and my autopilot reset from time to time in flight and

 I suspect that the voltage on the essential buss is dropping to a level that

 causes this.  I plan to check the voltage on the buss next time I am at the

 airport to try and confirm the voltage idea.



 What can cause the voltage to drop if that is the problem?  High resistance

 connections?  What else should I check? 	


   Diodes don't do that. Your data acquisition and

   diagnosis problem is not unlike that described

   in another thread on this forum theorizing about

   root cause of an OV trip.



   Transient events are . . . just that . . .SHORT.

   Probability of capturing data with the ordinary

   shop tools that will flashlight a path to discovery

   is slim.



   Does your diode get too hot to touch? What is it

   mounted to and what kind of diode? Try flying with

   the alternate feed switch ON thus bypassing the

   normal feed through the diode.



   In the mean time, I'll continue a recently resurrected

   notion of devising some data capture tools that can

   be easily acquired or perhaps mailed around. Playing

   'swap-tronics' until the problem goes away is not

   very professional or satisfying.



 

   Bob . . .    [quote][b]

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum