rectifying

• To: tesla-at-pupman-dot-com
• Subject: rectifying
• From: "Jan Florian Wagner" <jwagner-at-cc.hut.fi> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 08 Mar 2000 06:56:43 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi,

I found a very compact 3kV 50mA NST, and thought about turning this into a
fixed voltage (but non-regulated) DC HV power supply. I've a bunch of 5kV
40mA diodes waiting that should do the rectifying and voltage doubling
part. But I've no clue how to do a cheap _HV_ rectifier... so I'd be
grateful for any advice or schematics, or web site tips!

The DC PSU would be connected to charge up a 8nF tank cap. What size
should the smoothing cap be then? Does around 100uF sound reasonable?
Less, larger?

And, the problem is, how can I get 100uF or other at 2x4kVDC? And what
type of cap would be ok?
Is it a good idea to put ordinary "high" voltage electrolytic caps in
series? Or AC motor starter caps perhaps?

Other thing, does anyone know of a solution for this:
 1) even while the SG is ignited, the smoothing cap should be charged up.
    And not be shorted out and discharged into the short.
 2) when the SG quenches, there should be no limiting resistor
    between the 8nF tank cap and the smoothing cap. I'd want the
    8nF cap to be charged up fast.
Any way to do this?

Many thanks!

--
*************************************************
 Jan Florian Wagner
 http://www.hut.fi/~jwagner

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