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Re: [Amps] Source for plate xfrmer

To: "Dave" <dave@g8kbv.demon.co.uk>, <amps@contesting.com>
Subject: Re: [Amps] Source for plate xfrmer
From: "DAVE WHITE" <mausoptik@btinternet.com>
Date: Thu, 16 Feb 2012 15:56:18 -0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>
So something like the OE5JFL system, Dave? 
http://www.qsl.net/oe5jfl/flashover.htm

cheers

Dave G0OIL

----- Original Message ----- 
From: "Dave" <dave@g8kbv.demon.co.uk>
To: <amps@contesting.com>
Sent: Thursday, February 16, 2012 2:51 PM
Subject: Re: [Amps] Source for plate xfrmer


> Message: 1
> Date: Wed, 15 Feb 2012 18:56:43 -0600
> Message-ID:
> <CALWD7Z5nBBFyQxYSKRWXzia9Bup0LxE3K2rm6By52xizypKMtg@mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Well, I wanted a single cap and a regulated supply.  Too much?
>
> I mentioned having it partly for a sanity check.  I have a friend who
> once built a 4x1 amp with a 6 KV supply.  When he fired it up he got
> plasma while the rack danced around in his basement for 15 seconds which
> was how long it took for him to recover and get to the breaker panel.
> Maybe he had too much filter C.
>
> 73
>
> ---------------------------------------------------------------------
>
> Breaker panel!
>
> Our industrial amps, have a HV Crowbar system.  If something arc's, that
> fires dumping the B+, also simultaniously killing the command to the
> primary contactor.   It all makes a "bit of a bang", but does limit the
> damage potential.
>
> OK, we only go to some 2kV but with *Lots* of amps (double figures!)
>
> You could use a triggered spark gap, or "something" at 6kV.  But you'd
> also need some fault current limiting, or your spark gap (or whatever)
> would probably cease to exist!
>
> Remember, imagine the very worst thing that could happen, then plan for
> even worse than that happening!   Don't assume things will get connected
> together correctly too, if amp and psu are separate items.
>
> Then, you (and your amp) maybe safe.  Some of the time....
>
> Regards.
>
> Dave G0WBX.
>
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> 


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