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[DPRG] Blast from the past - OT and Lightning?

Subject: [DPRG] Blast from the past - OT and Lightning?
From: Rodent daweasel at swbell.net
Date: Sun Jul 8 17:21:11 CDT 2001

Must be a way to do it, as they have lightning detectors for outdoor
sporting events. They can detect lightning 20-25 miles away.

----- Original Message -----

> Back to lightning....I've been wondering lately if lightning had some sort
> of signature, imagine having a 'lightning probe' you could hook to your
> scope (hey, I said imagine, don't try this at home kids) what sort of wave
> form would it produce.  The magazine mentioned above mentions that a
> lightning strike consists of three stokes, each having a negative downward
> stroke and a positive upward stoke.  From the chart included (poorly done)
> it appears that these pairs of strokes are about 40 ms apart.  Does anyone
> out there have anymore info on this, or links \ contacts?  I've spent a
few
> hours searching the web but most of what I found deals with
> studying\preventing lightning damage with proper building grounding.  I
> would like to be able to confirm the multi-stoke and timing issue
> because.....I want to build a device that would monitor a 110V ac line and
> look for this signature and then disconnect, via a relay, a 110v powered
> device connect to it, sort of proactive lightning control.  Maybe I'm
trying
> to re-invent the wheel here, any thoughts?




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