Re: Voltage multiplier capacitors (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Fri, 23 Mar 2007 12:38:32 -0700 (PDT)
From: Chris Roberts <quezacotl_14000000000000@xxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Voltage multiplier capacitors (fwd)

Yeah, I just bought 20, 15kv caps at 2200pf each, I will try putting them in strings of 2, for a voltage rating of 30kv, and then paralleling 3 of those strings together. That way, I will effectively have 3, 30kv, 3300pf caps for the tripler. So I am just going to give it a try with that, and go from there. I will let you all know if it works. What I might have to do as well is find access to an ocilliscope so I can measure what everything looks like on the output.

High Voltage list <hvlist@xxxxxxxxxx> wrote:  Original poster: Steven Roys 



---------- Forwarded message ----------
Date: Wed, 21 Mar 2007 20:19:03 -0700
From: Jim Lux 
To: High Voltage list 
Subject: Re: Voltage multiplier capacitors (fwd)


http://home.earthlink.net/~jimlux/hv/cw1.htm has some schematics and 
design equations, including one for a center tapped transformer.

It's a bit complex to figure out what size caps might be optimum for 
a hugely inductive source like a NST. As the stack charges from a 
stiff low impedance, the current flow starts to look like narrow 
pulses (since it only flows when the transformer voltage is > the cap 
voltage, and so on, up the stack). A ballasted source like a NST 
might act more like a constant current source, so the charging 
current waveforms might look different.

I'd just pick some caps of convenient values and build it and try it. 








-Chris

"The trouble is not that the world is full of fools, it's just that lightning isn't distributed right." -Mark Twain


 	 
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