Re: Mark's DRSSTC II pictures

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "marc" <xp88@xxxxxxxxxxxxx>

Thanks to everyone who replied after looking at the pictures..
I learned a few good tips!

Marc


> [Original Message]
> From: Tesla list <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Date: 12/5/2005 9:36:41 AM
> Subject: Re: Mark's DRSSTC II pictures
>
> Original poster: Steve Ward <steve.ward@xxxxxxxxx>
>
> Hi Marc,
>
> I notice your bypass caps placed on your main filter caps, interesting
> idea... it was something i was thinking about doing when people began
> asking about primary strikes taking out the inverter.
>
> Some things that worry me:
>
> The clip on your strike ring has very sharp edges that point upward...
> forms a wonderful point for corona and possible arc-over.
>
> The primary taps also have sharp points... with couplings this high,
> field control is extremely crucial.  Ive gone through a lot just to
> keep sharp points to a minimum with my coils, i think you will see why
> when you fire that up.  You may need to use some plastic insulation to
> help eleviate the problem (this sometimes does work, but often makes
> things worse).
>
> You are using secondary feedback... and while Dan got his setup to
> work fine that way, ive always had problems and even pspice
> simulations suggest its not the right way to go as it never gives true
> zero-current switching.
>
> You will need a breakout point on that toroid (probably already knew
that).
>
> Coupling might be too tight, but that will be determined once you fire it
up.
>
> Twist the wires of your GDT primaries together to lower the leakage
> inductance of that wiring.
>
> Aside from those small things, it looks nicely built.  I look forward
> to your results.
>
> Steve Ward
>
> On 12/4/05, Tesla list <tesla@xxxxxxxxxx> wrote:
>  > Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>
>  >
>  > Hi Mark,
>  >
>  > I put the pictures up here:
>  >
>  > http://hot-streamer.com/temp/Mark/
>  >
>  > The coil looks great!!!
>  >
>  > Cheers,
>  >
>  >          Terry
>  >
>  >
>  >
>  > At 03:02 PM 12/4/2005, you wrote:
>  > >Hi Terry. The zip file is 3.6 meg. I don't know if this will come
through.
>  > >I hope so.
>  > >Thanks for looking at the pictures!!!!!
>  > >
>  > >Regards,
>  > >
>  > >Marc
>  > >
>  > >
>  > > > [Original Message]
>  > > > From: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>
>  > > > To: <xp88@xxxxxxxxxxxxx>
>  > > > Cc: <tesla@xxxxxxxxxx>
>  > > > Date: 11/29/2005 8:39:17 PM
>  > > > Subject: Re: DRSSTC II
>  > > >
>  > > > Hi,
>  > > >
>  > > > You can send me the pics too and I can post them on a website so
>  > > > everyone can get too them.
>  > > >
>  > > > I powered mine up with like 6 x 9V batteries at first.  They had
the
>  > > > voltage but did not have enough current to blow stuff up if I
>  > > > goofed.  Then I could check all the gate drives and all before
>  > > > letting it rip at full power.
>  > > >
>  > > > Cheers,
>  > > >
>  > > >          Terry
>  > > > Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>
>  > > >
>  > > >
>  > > > At 04:50 PM 11/29/2005, you wrote:
>  > > >
>  > > > >Hi Dan, I bought your book about a year ago, and finally completed
>  > > > >the DRSSTC II. I think it came out pretty good. I was wondering
>  > > > >before I power up for the first time, would you mind looking at a
>  > > > >bunch of close-up pix and give me your thoughts, opinions on
>  > > > >"first-light". I think I have everything needed, variac, 120-240
>  > > > >step-up, 8-foot ground rod driven in, etc.
>  > > > >
>  > > > >Where would I send or post pictures?
>  > > > >
>  > > > >Thanks
>  > > > >
>  > > > >Marc
>  > > > ><mailto:xp88@xxxxxxxxxxxxx>xp88@xxxxxxxxxxxxx
>  > > > >
>  > > > >
>  > >
>  > >
>  >
>  >
>  >
>