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Re: [TCML] NST model



That is really cool!  What an excellent piece of work!

It's interesting that the regular xfmr model works for a shunted NST, or is the shunt implicit in the 0.955 coupling constant?

Are these waveforms all with corona-type arcs, or are some with arcs to ground?

No wonder it felt like I was kicked by a mule when Igor turned the coil on when I was standing too close. Four amps or so is in the range of Taser currents. I didn't lose muscular control and writhe on the ground, but it does have the effect of causing one to involuntarily emit a long string of loud and closely-spaced bad words. Defibrillation current is in the neighborhood of 20 amps. Best we be careful.

---Carl




-----Original Message----- From: jhowson4@xxxxxxxxxxx
Sent: Sunday, February 02, 2014 9:30 AM
To: Tesla Coil Mailing List
Subject: Re: [TCML] NST model

Does this model measure up to scrutiny?
http://www.capturedlightning.org/hot-streamer/TeslaCoils/MyPapers/modact/modact.html




Thanks,
John "Jay" Howson IV


"Why thank you, I will be happy to take those electrons off your hands."

----- Original Message -----
From: "Ed Phillips" <evp@xxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Saturday, February 1, 2014 7:35:25 PM
Subject: Re: [TCML] NST model

That procedure works very well here for steady state calculations at
full line voltage although the transient behavior with capacitor across
secondary and spark gap discharge can get very complicated and almost
chaotic.

Ed

Jim Lux wrote:

The shunt results in large leakage inductance. Model it as a very
large inductor in series with the secondary.

For instance, if you have a 15kV, 30mA transformer, that implies that
the series impedance of the secondary is 15E3/30E-3 or 5 Megohms.
Using X = L *2*pi*f At 60 Hz, that's 13kHenry
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