Voltage Tripler Question (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 04 Sep 2003 20:47:36 -0700
From: Daniel Reinders <danreind@xxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Voltage Tripler Question

Hi everybody,

I have a voltage tripler, but I'm confused about a couple marking.  In and
Out are obviously the High voltage lead and the tripled high voltage lead.
G presumably is ground.  I don't know what CTL and F pins represent?  How
should I hook this up to the leads off my flyback transformer?

Thanks,

Dan
----- Original Message -----
From: "High Voltage list" <hvlist@xxxxxxxxxx>
To: <hvlist@xxxxxxxxxx>
Sent: Thursday, September 04, 2003 7:58 PM
Subject: RE: Marx Generator / Resistor Voltages (fwd)


> Original poster: Steven Roys <sroys@xxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Thu, 04 Sep 2003 11:39:36 -0400
> From: "Mccauley, Daniel H" <daniel.h.mccauley@xxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: RE: Marx Generator / Resistor Voltages
>
>
>
> > >You don't need such a resistor if you are using them between
> > stages.  I
> > >use 1Meg, 600V, 3W carbon resistors with zero problems and
> > I'm charging
> > >my stages up to 40kV each.
> > >Unless your charging current is super higher, you will never
> > drop more
> > >than a few hundred volts between each stage.
> >
> > But they will see the full stage voltage when the marx
> > discharges, and I would imagine a 600V
> > resistor run at 40KV may well deteriorate over time.
> >
> > >Dan
>
> Actually no.  When the Marx Generator discharges, the capacitors look
> like an extremely low impedance compared to the
> very large impedance of the resistor paths.  Almost all current will
> flow through the series capacitance path and very little voltage will
> develop across the resistors (unless you are using very poor capacitors)
> At the initial firing, there will be a very brief 40kv spike on the
> resistor, but carbon resistors are very tolerant to these brief
> transient spikes.  Metal oxide type resistors are much much less
> tolerant.
>
> I've already have probably > 10,000 pulses on my marx generator and not
> one resistor failure yet.
>
> Dan
>
>
>