EMP...Re: [BC] Satellite EAS

[Mike McCarthy]

Generally speaking, Dana is right.  All but a few highly sensitive 
tubes do not suffer from EMP failure. Most unprotected semi-conductors 
will fail when exposed to an EMP event. Over the years, there have been 
huge advances in EMP protection as the result of lightinging/power line 
surge supression. BUT, most devices prone to suffer failure during a 
storm will most definately fail in an EMP.  Even if protected by 
typical surge suppression devices.  They're just not fast enough.  Even 
lightning arrestors are not fast enough.  EMP pulse is something 5 
times faster that the rise time of a primary bolt strike.

That's why tubes still in use within certain miltiary gear....

MM

> 
> 
> EMP destroys the base/emitter and/or base/collector junctions of
> transistors.
> 
> Tube equipment is immune.
> 
> -D
> 
> 
> 
> Completely? Are you sure? (I'm not, that's why I ask and ponder). I'd 
think
> that internal arcing would occur similar to the effect of putting it 
into a
> microwave oven. However, at this point it's a moot point (except for 
the few
> audiophiles that still use small tubes which would be the ones most 
at risk
> I'd guess.
> 
> Now, we're on to a discussion topic. Pull up a chair and pour a glass 
of
> brandy, let's talk.
> 
> Dave
> 
> 
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