[Amps] Source for plate xfrmer

[Rob Atkinson]

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

rob
K5UJ

On Wed, Feb 15, 2012 at 5:21 PM, Vic, K2VCO <k2vco.vic at gmail.com> wrote:
> What would be the point of using it in an amplifier power supply? An arc
> would turn tubes (etc.) into plasma. It's like using a howitzer to go
> dove hunting.
>
> On the other hand, if you are building a Death Star it would be a good
> start.
>
> On 2/15/12 1:32 PM, Rob Atkinson wrote:
>> Yes it's shorted.  It's one of those Maxwell energy discharge caps
>> which means it has to be derated to 6 KV for WVDC.  I bought it on
>> eBay in a Gov't auction.  I know from a friend's experience that
>> insane amounts of filter capacitance like that can't be brought up
>> with a single step start unless you want melted relays.   It has to be
>> ramped up slowly over a 30 to 60 second period.   I have to not only
>> work out a good bleeder system but also a way to tell whether or not
>> the bleeders in service are functioning and have redundancy.   IF I
>> actually use it.
>>
>> Dave, what would YOU do with it? : )
>>
>> 73
>>
>> rob
>> k5uj
>>
>>
>>
>> On Wed, Feb 15, 2012 at 11:21 AM, Mike Andrews<mikea at mikea.ath.cx>  wrote:
>>> On Wed, Feb 15, 2012 at 05:01:22PM -0000, DAVE WHITE wrote:
>>>> I can just picture the crater where St Charles, IL used to be if you
>>>> discharged that beast!  Where on earth did it come from?  If you weren't so
>>>> far away I'd be asking you if it was for sale....
>>>>
>>>> Dave G0OIL
>>>>
>>>> ----- Original Message -----
>>>> From: "Rob Atkinson"<ranchorobbo at gmail.com>
>>>> To: "Carl"<km1h at jeremy.mv.com>
>>>> Cc:<amps at contesting.com>
>>>> Sent: Wednesday, February 15, 2012 4:19 PM
>>>> Subject: Re: [Amps] Source for plate xfrmer
>>>>
>>>>
>>>>> I have a 10 KV 200 uF oil cap weighs 175 lbs and that's why I'm
>>>>> hesitant to use it.
>>>
>>> Hmmmmm ... .5 * C * V * V
>>>            .5 * .0002 * 10^4 * 10^4
>>>            10^-4 * 10^4 * 10^4
>>>                    10^4 Joules.
>>>
>>> That's ... hefty.
>>>
>>> You do keep it shorted when not in circuit, *YES*?
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>
> --
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco/
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