[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

*To*: Tesla Coil Mailing List <tesla@xxxxxxxxxx>*Subject*: Re: [TCML] VTTC-tuning. John got me started ;-)*From*: bartb <bartb@xxxxxxxxxxxxxxxx>*Date*: Wed, 08 Apr 2009 19:00:50 -0700*Cc*:*Delivered-to*: teslaarchive@xxxxxxxxxx*Delivered-to*: tesla@xxxxxxxxxx*In-reply-to*: <20090407110550.6461690A@xxxxxxxxxxxxxxxxxxxxxxxx>*List-archive*: <http://www.pupman.com/pipermail/tesla>*List-help*: <mailto:tesla-request@www.pupman.com?subject=help>*List-id*: Tesla Coil Mailing List <tesla.www.pupman.com>*List-post*: <mailto:tesla@www.pupman.com>*List-subscribe*: <http://www.pupman.com/mailman/listinfo/tesla>, <mailto:tesla-request@www.pupman.com?subject=subscribe>*List-unsubscribe*: <http://www.pupman.com/mailman/listinfo/tesla>, <mailto:tesla-request@www.pupman.com?subject=unsubscribe>*References*: <20090407110550.6461690A@xxxxxxxxxxxxxxxxxxxxxxxx>*Reply-to*: Tesla Coil Mailing List <tesla@xxxxxxxxxx>*Sender*: tesla-bounces@xxxxxxxxxx*User-agent*: Thunderbird 2.0.0.21 (Windows/20090302)

Hi Dex,

Take care, Bart Dex Dexter wrote:

I see that Vp is missing in the formula I typed below. It should be obviously : V=0.7*Vp*SQRT(Ls/Lp) Note for Moderators: If You see obvious mistakes of similar kind in the future,feel free to correct it! Dex --- dexterlabs@xxxxxxxxxxx wrote: From: "Dex Dexter" <dexterlabs@xxxxxxxxxxx> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx> Cc: Subject: Re: [TCML] VTTC-tuning. John got me started ;-) Date: Tue, 7 Apr 2009 01:44:40 -0700 Very interesting paper. But what do you think of formula: 0.5*L*di/dt < V < L*di/dt Note that this gives good agreement with Dr. Resonance's max voltage formula of a typical coil: V=0.7*SQRT(Ls/Lp) The factor 0.7 is somewhere between 0.5 and 1 so we have: V=0.7*L*di/dt Dex--- bartb@xxxxxxxxxxxxxxxx wrote:From: bartb <bartb@xxxxxxxxxxxxxxxx> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx> Cc: Subject: Re: [TCML] VTTC-tuning. John got me started ;-) Date: Mon, 06 Apr 2009 18:14:33 -0700 Hi Dex,Let me point you to Paul Nicholson's TSSP site. There have been numerousmeasurements made regarding current distribution, base currentmeasurements, etc. There is a link on the front page to pn2511. Readthrough this document (it's right down your path of interest). This maygive you a better understanding of what is happening in the backgroundof Javatc which is accounting for the distribution along the secondary.http://abelian.org/tssp/ Take care, Bart Dex Dexter wrote:Yes ,you understand me now. The problem with this can be that current distribution prior and after spark breakout across secondary isn't the same. That's the capacitance spark loading effect. That will affect more tesla coils with small toroids but big sparks. We can measure bottom current and make the estimation only. Dex--- bartb@xxxxxxxxxxxxxxxx wrote: From: bartb@xxxxxxxxxxxxxxxx To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx> Cc: Subject: Re: [TCML] VTTC-tuning. John got me started ;-) Date: Fri, 3 Apr 2009 18:59:48 -0700 (PDT) Hi Dex, (hope you get this ok. My server has a problem and I'm using a backup web mail thing to write this). Are you talking about capturing base current waveforms and looking at the data just before breakout? If that is the case, then yes, I agree with you. This will eliminate everything after breakout. Excellent! I think I understand where you are going with this. As long as you store the data and differentiate the time at which breakout occurs (ignoring anything after breakout), then yes, you will get a good look at top volts in a one-shot mode of operation. Continuous operation will prove difficult of course. Take care, BartHi Bart, No I don't think so. It doesn't depend on the temperature of the day,humidity,radius of curvature etc. If you consider it more it is not the formula for the prediction. It is formula for calculation if you know secondary base current (or given the current). That's the voltage developed across inductor. The only unknown thing is "L" which varies from design to design and size of topload. Dex_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla _____________________________________________________________ Washington DC's Largest FREE Email service. ---> http://www.DCemail.com ---> A Washington Online Community Member ---> http://www.DCpages.com _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla _____________________________________________________________ Washington DC's Largest FREE Email service. ---> http://www.DCemail.com ---> A Washington Online Community Member ---> http://www.DCpages.com _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla _____________________________________________________________ Washington DC's Largest FREE Email service. ---> http://www.DCemail.com ---> A Washington Online Community Member ---> http://www.DCpages.com _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla

_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla

**References**:**Re: [TCML] VTTC-tuning. John got me started ;-)***From:*Dex Dexter

- Prev by Date:
**Re: [TCML] Varnishing Secondary** - Next by Date:
**Re: [TCML] Varnishing Secondary** - Previous by thread:
**Re: [TCML] VTTC-tuning. John got me started ;-)** - Next by thread:
**Re: [TCML] VTTC-tuning. John got me started ;-)** - Index(es):