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Switches, Warning Light, Avionics Ground

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edchristian(at)knology.ne
Guest

Posted: Thu Jul 12, 2007 4:52 am Post subject: Switches, Warning Light, Avionics Ground

I have three questions.



1. Would you please elaborate on the current philosophy concerning  

the Left/Right mag switches. In the "book" you suggest 2-3 switches  

(pg. 11-1 but in the Z-11 diagram and note 2 you use the 2-5 switches.



2. I am rewiring my plane per the Z-11 diagram. I am installing a  

Grand Rapids EIS which has a warning light for all types of limits  

including low/high voltage and high amp draw - is there any reason to  

install the low/over voltage module?



3. I am planning on building an Avionics ground block. Is there a  

more detailed explanation? Do you use a connector with solder cups on  

back or just install all the female D-sub pins and solder to them? Do  

you have any part numbers and where to order materials? (Say to build  

fig. 18-14)



Thanks,



Ed

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aadamson(at)highrf.com
Guest

Posted: Thu Jul 12, 2007 5:48 am Post subject: Switches, Warning Light, Avionics Ground

I continue to see this post about ground blocks for avionics, so I figured

I'd chime in.  I'll take some pictures of the ones that I've built, but for

now, I hope this description will work.



A) use a DB connector with solder cups

B) get a piece of double sided copper clad curcuit board material in 1/16"

thickness

C) cut the curcuit board material such that with a DB connector pressed onto

the edge of it that the outline of the remaining board will fit inside the

DB shell that you'll use.

D) now, just solder each solder cup onto the copper clad curcuit board

E) drill and mount the terminal with the larger grounding wire to anywhere

on the remaining area of the curcuit board making sure you use a conductive

type mounting arrangement so you capture conductivity from both sides of the

board

F) you'll need to size the wire between the circuit board and the ground

post to handle the amount of load of all the ground pins



There you have it, use the gender of your choice and the size of DB

connector based upon how many items you need to ground. 



Hope this helps,



Frys (online) has most of the parts, or so should any major electronics

distributor (digikey, or Mouser).  In my case, I just walked into a frys and

bought it all off the shelf.



Alan



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