Re: [TCML] Caps

[mddeming@xxxxxxx]

-----Original Message-----
From: Mark X2 <susax2@xxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Wed, Aug 29, 2012 6:22 pm
Subject: Re: [TCML] Caps


Hi Christian,
Since you are building your first coil, it is a good thing you are aware of
resonant rise.
But IMHO resonant rise becomes an issue for more advanced coilers, so you
don't have to worry much about it yet.


snip>>>>>
Uhhhh,
Isn't this like saying understanding how brakes for your car work isn't 
important until you've been driving for at least a year? 
Res.rise can kill a newbie's tranny just as easily (or more so)than a 
long time coiler's.
Just my $0.02 from coiling since 1956. 

Matt D


Please share some more details about your design, so advice can be given
more specific. Also mentioning your level of knowlegde might help. Perhaps
all information given so far (although ment in the best way possible)
leaves you a bit flabbergasted and with more questions than you started
with.

You are certainly right when you're talking about costs and 942C's. Unless
you are very familiar with electronics, you might want to try a home made
bottle capacitor or plate capacitor (dont' want to provoke all that
love-to-hate these caps). Your choise of capacitor is mostly depending on
your budget and be aware capacitors can fail / will fail someday.

Bottle capacitors are lossy, messy and heavy, but take serious beating
without failure. I've been coiling for a year now and got gratifying
results<http://www.youtube.com/watch?v=OGn2jlEV76M>so far with a
bottle capacitor. To be fair I must mention with 144
beerbottles it's size, or it's creator, might be called 'slightly' mad.

Regards,
Mark



2012/8/29 Mark X2 <susax2@xxxxxxxxx>

> Hi,
>
> you should do some reading on Richie Burnett's website:
> http://www.richieburnett.co.uk/resonant.html#resonant
>
> Also visit Phil Tuck's site:
> http://www.hvtesla.com/design.html
>
> Both site's provide detailed information about resonant charging, this
> method differs a bit from Eric's JavaTC, but result in a smaller cap value.
> Ofcourse it's your's to decide which method too choose.
>
> Mark
>
>
>
> 2012/8/29 Christian Hill <monolegal@xxxxxxxxx>
>
>> Hello. I am building my first coil and have a few questions. I read that
>> you should stay away from using a resonate sized capacitor as it can cause
>> a "condition called resonate rise." Multiple sources say to use a "larger
>> that resonate" capacitor to keep this from happening. I've read that you
>> can also use a multiple of the LTR capacitance value as well. Let's say
>> that the optimum LTR capacitance is 10nF. Since I can double it and use
>> 20nF would I also be able to half it and use 5nF? (Assuming that my
>> voltage
>> needs were met, of course).
>>
>> I would assume that the closer I get to the resonate capacitance value,
>> the
>> better chances of resonate rise I have. So I should stay as close as
>> possible to a multiple of the LTR capacitance, correct? Or should I just
>> meet my voltage needs, tune the coil accordingly, and make use of safety
>> gaps?
>>
>> I am asking all of these capacitor questions because I want to get the
>> most
>> out of my money. Those Cornell-Dubillier 942C20P15K-F's can really add up
>> when you're on a budget. I tried searching through the archives and have
>> poured over dozens of tesla coil guides but found nothing that really
>> answered my questions. Thank you very much for your help.
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
>
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