Re: Off-Line Tesla coils (OLTC)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

> >> 3.      The BPS rate can arbitrarily be anything the rest of the
circuit
> >could
> >> support.  Since it is now a true DC charger, there is no need to worry
with
> >> 60 or 120Hz BPS rates.  It is far simpler theoretically now that the
old
> >> way which was tuned to the line frequency.
> >
> >Don't you need a diode in series with L35 and L34, as in a typical
resonant
> >charging circuit..
>
> Do you mean have a inductor in series (sort of) with the primary cap (or
> buffer cap) and drive the voltages up by resonating the thing at 60Hz off
> the Ac line?  I never considered that but I guess you could run up some
> darn high voltages that way...  Hehehe

No, just in series with the charging inductor (10 mH) that you have.  Check
out Richie Burnett's site for a good explanation.

>
> But don't you need several cycle before the voltage starts to get really
> high?  I guess I don't quite understand how you mean for it to work?
>
> >
> >There's also no need for both L35 and L34 (since they are in series.. and
> >the same goes for R63 and R64)  just one 20 mH choke and 1 40 ohm
resistor
> >should do it.
>
> I do that so the voltages and such in the model stay balanced.  It just
> makes the computer models a little easier to work with.
>
> >
> >OTOH maybe you've got the components sitting around...
> >
> >
> >>
> >
> The 1N4002 is the only diode supplied in the "free version" of MicroSim.
I
> modified the spice internal model so it acts like a big high power diode.
> A little modeling kludge...  I think DigiKey has some 1200V 100 amp high
> speed puppies ;-)

Don't need high speed.. it's 60 Hz..

>