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List:       classiccmp
Subject:    Re: Neon logic
From:       "Peter C. Wallace" <pcw () mesanet ! com>
Date:       2003-02-28 23:59:13
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On Fri, 28 Feb 2003, William Donzelli wrote:

> > How about Krytrons?
>
> Well, OK, but krytrons are a special breed (used to give something a *big*
> whack of current, like laser tubes and exploding bolts).
>
> Bad idea for a computer, as krytrons have a very limited life - only
> 10000 to 25000 firings. With the wrong bit of software, a krytron based
> computer would kill itself in a matter of moments.

Krytrons are small (peanut size) and not always used for large currents
(though they may trigger a bigger spark gap or flash lamp device) If not used
for full currrent they can last a long time (I had one blinking on my desk for
several years - nice hydrogen pink)

>
> And I still stand by the word - I have never "seen" a cold cathode
> submini tube. I don't have any krytrons!

I've seen many...

>
> William Donzelli
> aw288@osfn.org
>

Peter Wallace
Mesa Electronics

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