[Boatanchors] HV Electrolytics

[Nick England]

OK, Bob - just give us one link to one of those wonderful 10KV or 50kv
electrolytic capacitors.
One link that isn't an obvious Chinese mis-translation or mis-labeling of
an oil-filled cap - as all those alibaba.com listings are.

Even better would be a link to a technical paper (heck, even a wikipedia
article) that says anything about multi-KV electrolytic caps.

Just one link, please - We are waiting to be enlightened.

Nick England K4NYW
www.navy-radio.com

On Wed, Jun 3, 2015 at 11:36 AM, rbethman <rbethman at comcast.net> wrote:

> Should one *really* search, they even have 50KV Electrolytics.
>
> Stopping on one result doesn't cover the myriad of said electrolytic
> capacitors.
>
> They either have a lug painted, marked polarity in one fashion or other,
> but certainly are indeed made.
>
> Simply replying on one line for UV lamps doesn't tell the whole story.
>
> Those that insist on being so short sighted, then continue to live in a
> little part of the world that cannot accept that pretty high voltage
> electrolytic capacitors exist.
>
> This isn't to be construed as aluminum film electrolytic types.
>
> There are quite a few other methods to construct electrolytic capacitors.
>
> N0DGN
>
>
> On 6/3/2015 11:04 AM, KA4INM wrote:
>
>>
>>   I found:
>>
>>  " 0.5 uf 10kv electrolytic capacitor for uv lamp " which is really a oil
>> filled paper capacitor in a metal can just like those used in air
>> conditioners and other motor circuits.
>>
>>   You can always tell the difference by the lack of polarity indication
>> such as a RED paint dot (or a + and  -) and the fact that it is rated at
>> over 630 Volts dc wV.  It seems to be impossible to make a chemical film
>> electrolytic capacitor that can tolerate more than 630 Volts with current
>> technology.
>>
>>   We frequently put electrolytic capacitors in series (but only with
>> paralleling resistors to prevent uneven Voltage distribution caused by
>> inconsistent leakage current) to exceed 630 Volts.
>>
>
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