Re: dc hv capacitor question (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 17 Jun 2007 17:57:40 -0700 (PDT)
From: G Hunter <dogbrain_39560@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: dc hv capacitor question (fwd)

Ceramic caps aren't polarized.  The 10kvdc thing is
the rating of how much DC potential they can
withstand.  This means they can tolerate about 7kvac. 
They are not marked with + and - signs because the
hookup polarity doesn't matter.

Are you planning to use them as tesla coil tank caps? 
Just because they can survive intermittent pulse duty
in laser service doesn't mean they can stand up to
tesla coil tank circuit duty.  The high RF currents,
high pulse repetition rate, big dv/dt, etc., etc. is
too much for most doorknob caps.

Cheers,

Greg

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> 
> ---------- Forwarded message ----------
> Date: Sun, 17 Jun 2007 12:13:23 -0400
> From: miles waldron <mileswaldron@xxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: dc hv capacitor question
> 
> I have good fortune to have a set of 10nf 10kvdc
> ceramic DC laser pulse
> caps. They are blue, but all I know and can remember
> and can measure is that
> they are 10nf each at 10kvdc. My question is which
> termial is more likely
> "+" and which terminal is more likely "-"? The
> connectors are all the same
> female bolts, but the "top" is all smooth, and seem
> to have been pressed
> onto the "bottom". Is there some experiment or
> characteristic that I can use
> to figure out the DC orientation?
> 
> http://www.gravitymagnet.com/eBay/IMG_0001_2.JPG
> 
> Gentlemen,
> 
> Miles
> 
> 
> 
> 



       
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