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RE: DC vs AC TC (was Re: NST->DC Re: CGA Monitor Flyback)
Greets Marco And All,
> -----Original Message-----
> From: Tesla List [mailto:tesla-at-pupman-dot-com]
> Sent: Wednesday, February 23, 2000 8:48 AM
> To: tesla-at-pupman-dot-com
> Subject: DC vs AC TC (was Re: NST->DC Re: CGA Monitor Flyback)
>
> Original Poster: "Marco Denicolai" <Marco.Denicolai-at-tellabs.fi>
>
> Tesla List <tesla-at-pupman-dot-com> on 22.02.2000 15:03:06
>
> To: tesla-at-pupman-dot-com
> cc: (bcc: Marco Denicolai/MARTIS)
> Subject: NST->DC Re: CGA Monitor Flyback ???
>
>
>
> Original Poster: "Jan Florian Wagner" <jwagner-at-cc.hut.fi>
>
> >To make a DC Tesla coil using a NST, can I use HV rectifiers on the NST
> >secondary side? Or is this a bad idea with NSTs?
>
> There is NO BENEFIT in my knowledge using a DC tank instead of an AC tank.
> Others correct me please if I am wrong.
The one advantage I have of using DC at the moment
is that my cap is to big to charge during a 60hz
half cycle with my 9kv-at-30ma NST. So I can never get
the gap to fire. Of course that problem could be
solved with a rotary spark gap, or a smaller cap.
I am planning on doing both of these in time.
So in my case right now it is a necessity. I am looking
forward to getting a AC powered coil going as soon as
possible.
>
> Regardless of how you charge the primary capacitor, it will
> assume a certain
> polarity (different during different AC cycles, of course). At
> bang time this
> voltage will oscillate (that is, you'll get IN ANY CASE AC voltage and
> current).
> And that is just what makes all the TC work.
>
> If you wanted to regulate the charging voltage, to achieve
> repeatibility and a
> certain degree of precision, than you'd use a DC supply. Just to
> get rid of all
> those AC / RSG phase dependance and to get a repeatable bang. I
> bet you are not
> aiming at that, aren't you?
>
> Regards
>
Cheers,
Bill Parn