would a 15kv 5ua DC transformer work for TC

To: "'Tesla List'" <tesla-at-pupman-dot-com>
Subject: would a 15kv 5ua DC transformer work for TC
From: Tesla List <tesla-at-stic-dot-net>
Date: Sun, 22 Feb 1998 23:53:24 -0600
Approved: tesla-at-stic-dot-net

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From:  Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent:  Sunday, February 22, 1998 3:28 PM
To:  Tesla List
Subject:  Re: would a 15kv 5ua DC transformer work for TC

Hi Chris,

> From:  Chris Wendorff [SMTP:chrisw-at-kellnet-dot-com]
> Sent:  Friday, February 20, 1998 3:44 PM
> To:  tesla-at-pupman-dot-com
> Subject:  would a 15kv 5ua DC transformer work for TC
> 
> Hello everyone. I have a 15kv 10ua DC transformer from an old air ionizer.
> Could this be used to make a small tesla coil? If so what kind of capacitor
> would be good for use with this? Also would it being DC be a problem?

The equation V = i x t/C  would be helpful here. Let's say you want a 
break rate of 100 Hz.  You have 10mS to charge the cap roughly. 
Assuming the supply *is* constant current up to 15kV, you can find a 
value of C that meets this requirement:

C = 10^-5 x 10^-2/1.5x10^4 Farads = 6.6pF    not too good really.

Perhaps someone had better check my arithmetic.
Malcolm