 Check out the bookstore at IRBS.com |
|
|
|
|||||
|
||||||
Subject: Re: [worldcruising] Electronics quick-disconnect
From: Bob Taylor (bobt@XXX.XXX)
Date: Thu Jan 25 2001 - 10:53:00 EST
Hi Jack
If you are talking about the 12v supply then I can tell you from experience that a common switch won't do it. The lightning just jumps the contacts. A large double throw knife switch will work better. If you have a direct hit even that won't stop it. MOV's in the supply line help
but are not a guarantee. If you unplug move the wires well apart.
As far as the antennas go I just unplug. I have not found anything else that works. I have lost radios etc. to lightning. I am talking an actual hit.
You can put diodes back to back on the antenna center conductor of the coax and it will prevent damage in the event of a nearby strike but only if the rating of the diodes are not exceeded. Still a good idea.
HIH
Bob sv Adagio
Jack Harkins wrote:
> [] Barry's post reminds me to ask if any of you have a quick disconnect to unplug electronics in the presence of lightning? I mean, really quick -- pull one plug, it's all out, etc. Or maybe one plug for battery power and one more plug to disconnect antennae (plural if possible)?
>
> In nearly 40 years of sailing, I've never been struck byu lightening, but I know others who have. Whereas my original cruising was a mere compass and RDF, I now have the usual complement of new gadgets -- and a new "what if" worry! Any ideas?
>
> Jack Harkins
>
> [Non-text portions of this message have been removed]
>
> =====================================
> to unsubscribe email to: worldcruising-unsubscribe@onelist.com
=====================================
to unsubscribe email to: worldcruising-unsubscribe@onelist.com
|