Date   : Mon, 06 Aug 2007 22:10:58 +0100
From   : info@... (Sprow)
Subject: Suppressor (Econet)

In article <Marcel-1.53-0806204428-06cxSBG@...>,
   Johan Heuseveldt <johan@...> wrote:
> > >>> If and when I would extend my Econet network, I would like to fit
> > >>> Suppressors for safety reasons. 
>
> Question for me is: at which are these diodes clamped to? Does that
> requires a good ground/earth connection/terminal?
> How is the protection kept after it has kicked in? Is something
> destroyed during the process, and needs replacing afterwards?
>
> Thanks for your input. I'm still searching for details, and try to
> determine whether or not I will need them. I'm certainly not in a hurry!

You might want to take some inspiration from the transient supressors used
in the master phone jack (here in the UK at least). The circuit for that
should be on the internet.

Other keywords:
 transorb
 varistor
 gas discharge supressor
 
A pair of schottky diodes probably wont help much for an indirect lightning
strike as they're silicon based, so will need to be huge to get rid of the
energy. The three I mention there will withstand many hits before finally
breaking down, by which time your house will be on fire anyway,
Sprow.