Re: [TCML] Potential transformers and generators

[bturner@xxxxxxxx]

Downside to small generators like that is they don't like loads with major
phase-shifting going on. My system pretty much maxed one out. However, a
25Kw diesel unit barely flinches.

More importantly with the potential transformers is determining which Hx
terminal is wound closest to the core. Just like with NST's, you want the
closest windings tied together to put less stress on the winding
insulation.

- b




> Hello all,
>
> First off, If I have a matched pair of potential transformers.  Can I
> series them up provides the phases are properly matched? Im confident the
> answer is yes, but just checking.
>
> Secondly  we have a hefty generator, 5.5 Kva I think.  It's rather new,
> and I don't want to kill it.  What's everyones opinion on using it to
> drive a coil?
> Since it is only 5.5 Kva will it limit it self to the max current. And
> would a ballast for my pts still necessary.
> My inclination says, no and yes. But it would be convienient if I didn't
> need a ballast, so im asking.
>
> Cheers
> John "Jay" Howson IV
>
> Sent from a tiny phone with a tiny keyboard.
>
> ----- Reply message -----
> From: coils@xxxxxxxxx
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Subject: [TCML] srsg to vari speed rsg
> Date: Sun, Jul 28, 2013 10:52 pm
>
>
>
> nice gap Jay!  looks like you like making things too.  Is that a nylon
> rotor shaft?  If so, any concerns with heat on the electrode?  I ask
> because I have managed to
> melt .375"  G-10 at 8 kva, gonna try G-7 next.
>
> cheers
>
>
>
> On Sun 28/07/13 12:07 PM , jhowson4@xxxxxxxxxxx wrote:
>
>> Sort of how I built my ASRG
>> propeller style, I can remove electrodes easily, I can replace tungsten
>> easily,
>> and it uses a minimum amount of tungsten as well, cutting costs. Each
>> stationary electrode only has .75" of 1/4.
>> the rotary electrodes have 1.5" of 1/4" thoriated tungsten.
>> Brass is expensive stuff, but all the brass was procured cheaply on ebay
>> via some good deals over the course of a year or so.
>>
>> Designed to be a dual gap, for use in a split resonator power supply DC
>> coil, hence the double sided nature.
>> Still needs a few tweaks to be perfect for my tastes, but it does the
>> job
>> nicely currently on my test coil.
>>
>> check it out here
>> http://s139.photobucket.com/user/JHowson/library/Tesla%20Coils/Experimental
>> %20DC%20Tesla%20Coil%20%20%20code%20name%20TRON/4%20Rotary%20Spark%20Gap?so
>> rt=3&page=1[1]
>>
>> note: the second rotary electrode is missing in the pictures. I have not
>> installed it yet.
>>
>> Thanks,
>> John "Jay" Howson IV
>>
>> "Why thank you, I will be happy to take those electrons off your hands."
>>
>> ----- Original Message -----
>> From: "Scott Bogard"
>> To: "Tesla Coil Mailing List"
>> Sent: Sunday, July 28, 2013 1:46:10 PM
>> Subject: Re: [TCML] srsg to vari speed rsg
>>
>> I was thinking more a propeller gap with unused stationary electrodes,
>> that
>> could be reconnected at will. You could always add top capacitance to
>> cancel out the extra primary inductance when you cut your cap size,
>> assuming you have the power draw to support a larger top load, not sure
>> if
>>
>> that is applicable to your situation. But at any rate I love the ASRSG,
>> I
>> did sync once, and got poor results, switched to ASYNC and things worked
>> much better. I know now what I did wrong, poorly sized cap and all, but
>> I
>> still won't go back, ASYNC is too easy to build, and smaller caps are
>> cheaper, and I love the brightness only high BPS can afford.
>>
>> Scott Bogard.
>>
>> On Sun, Jul 28, 2013 at 2:42 AM,  wrote:
>>
>> > Thanks for your thoughts Scott, I am using a 60:1 distribution
>> > transformer with an adjustable (gapped) inductive ballast.
>> > I am tapped out of primary inductance, so I cant really decrease my
>> cap.
>>
>> > I have a lot of flexibility though with the ballast. Thinking
>> > about the gap you suggest has me boggled, maybe something like Richard
>> > Hulls series quench rsg with swithchable stationary electrodes?
>> > What appeals to me, is that a vari speed gap can be adjusted on the
>> fly,
>>
>> > no stopping and fiddling. That is why I made the Freu phase shifter.
>> >
>> > This has really got me thinking about rotary gaps!
>> >
>> > cheers
>> >
>> >
>> >
>> > On Sat 27/07/13 12:31 PM , Scott Bogard  wrote:
>> >
>> > > One thing you could do, is rig a system to do sync that has multiple
>> > > dis-connectable electrodes for 120/240/480 BPS, but again, if you
>> aren't
>> > > changing the tank cap size, only one range will actually serve your
>> > > purposes well... What type of transformer are you using? How is it
>> > > ballasted if at all?
>> > >
>> >
>> > _______________________________________________
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>> r/JHowson/library/Tesla%2520Coils/Experimental%2520DC%2520Tesla%2520Coil%25
>> 20%2520%2520code%2520name%2520TRON/4%2520Rotary%2520Spark%2520Gap%3Fsort%3D
>> 3%26amp%3Bpage%3D1[2]
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