Re: MOTs

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

Original poster: "tesla by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-paradise-dot-net.nz>

Greetings
Tnx for view, I was not in fact talking about you.  I've never had a problem
with the use of personal preferences being stated on the list.
I was refering to preference being given as the only way to do it.

The points you raise I can comment on

> insulation between windings breaking down
This does not actually seem to occur. Secondary to core is the risk but in 4
to 6 MOT systems this can be avoided with oil and careful MOT selection. It
does easily occur in NST's if the design is correct, ie 60Hz resonance
between Cp and NST's.

> really high current
Yes this is true, but in a big coil with say 6 MOT's this is a great
feature. With a big MMC and high BPS it works to your advantage.

> power factoring
Less of an issue than with NST's actually as the supply is lightly
inductuvely ballasted. I use a little PFC as I have a little primary
inductiver\ ballasting. Probably overall can be eliminated if you have the
mains supply with enough current. I use it to keep the mains I down.

> submersing in oil
True, but 6" plumbing fixtures make neat holders are leak proof if made
properly. Other plastic or metal containers are used too. Other big xfrrmrs
often come in oil but it can fairly be a nuisance

> connecting multiple xfrmrs for proper voltage vs. ONE
> nst
This can be an advantage actually. I tend to tune and experiment with 4 MOTs
or even two and add them as I get things going better. It also offers the
advantage of being able to split the mains I/P to load share off several
mains ccts. A single NST can make a tesla agreed but for power you are still
going to need to parallel some up. An they should be same Vs
Another thing I like is the modular nature of MOT's, in my case MOT's no 5
and 6 do not reside in the chassis of 1 to 4, they are external. This makes
it easier to transport than an equivalent xfrmr of the same overall power
>
> Of course a lot has to do with availability. I
> just chose the NST because it was readily available
> (lots of neon sign shops in South Florida)
Your really lucky here, not so fortunate in many places. MOT's are so
plentiful for free or close to it they are a great resource. Old NST's are
around in NZ I can get them for $30 to $40

> I think for a beginner like me it's easier to
> understand the NST and it's implementation into the
> already complicated and unfamiliar TC. Sure you can
> use both, but it's just easier for me to understand
> the NST's simple function.
Yes there are some differences agreed. From my explanations you might agree
they are similar just variations in design

 >I'm doing the best I can
> and I thank you folks for the guidance and learning
> opportunity. I really appreciate it.
Dan again let me say my comments were directed at those that seemed to have
caused you to reject MOTs as an option. It pleases me to see people enjoying
the hobby in the way they want. I felt you had been put off a valid
alternative without good cause by strong anti MOT statements by others

Best and care
Ted L in NZ