Re: [TCML] Rectifying methods

[DC Cox <resonance@xxxxxxxxxxxx>]

I stock 8 kV 450 mA HV diodes.

Dr,. Resonance





On Sun, Dec 5, 2010 at 2:22 PM, Dennis Eriksson <teravolt@xxxxxxxxxxx>wrote:

>
> I have now been in contact with the local powerplant and a highvoltage
> laboratory not far from here, and they have agreed to help me complete this
> rectifier, so that will sort out.
> What remains now is the set of diodes that is referred to as the de-Q-ing
> diode on the website I was told to read. What kind of stress are those
> supposed to withstand?
>
> > Date: Fri, 3 Dec 2010 06:40:23 -0800
> > From: jimlux@xxxxxxxxxxxxx
> > To: tesla@xxxxxxxxxx
> > Subject: Re: [TCML] Rectifying methods
> >
> > Dennis Eriksson wrote:
> > > The input voltage to the rectifier is only about 4000VAC, which would
> make 10000VDC in the primary circuit (12-pulse rectifier).
> > > So far, the only commercial diodes I have managed to find are low
> voltage/power rated, such as those found in household electronics.
> > > These are insufficient, as I would require thousands of them. On eBay I
> found these
> > >
> > >
> http://cgi.ebay.com/50x-6Amp-1KV-High-Voltage-High-Current-Rectifier-Diode-/130461406786?pt=LH_DefaultDomain_0&hash=item1e601b1642
> > >
> >
> > Yes.. that's the general thing, although for an application like yours,
> > I think I'd want to buy parts from a well-known manufacturer through a
> > recognized distributor. You'd hate to buy some cheap knockoff that just
> > looked good.
> >
> > So, you string up 12 of them for each element of your 12 pulse.
> >
> >
> > You might want to look for diodes with faster recovery time. You don't
> > need the ultra-fast, but somewhat faster helps. For one thing, all the
> > diodes in the string turn off closer together in time, for another, you
> > have less reverse current flow during the turn off.
> >
> > > Which are ought to be somewhat similar to the ones you are referring
> to, am I right? Perhaps these would be suitable in the rectifier, but would
> they be able to resist the tremendous current from the tank capacitor when
> the spark gap fires? Or is it not a problem at all? I have no education in
> electronics worth mentioning, I built my first coil at the age of thirteen,
> and has continued ever since, so there is plenty of experience though.
> > >
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