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

Re: 8 kHz Tesla Coil

Original poster: "Kurt Schraner" <k.schraner@xxxxxxxxxxx>

Hi Antonio, all,

my bigger induction coil, whose secondary is wound of 0.4mm wire (41.5k turns) in a stack 26 flat coils, is 60H without - and about 420H with laminated iron core. See:

http://home.datacomm.ch/k.schraner/induc_maindata.html

However, it would support only about 150...170kV sparks (needle points assumed), as a secondary voltage. The resonant frequency of the cored coil is about 1200Hz (mesured), when no sparks are present. From the measurements, a self capacitace of ~40pF can be estimated. See:

http://home.datacomm.ch/k.schraner/induc_analys.htm

The smaller and newer coils (Andy's and mine) with ~26k turns of 0.315mm wire in 12 "pies" have ~15H wihout and ~110H with iron core. They can support around ~100...120kV.

Think, it would be quite easy, to use those coils for low-f Tesla style, but not for high power.

Best regards,   Kurt

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, September 17, 2005 7:11 PM
Subject: Re: 8 kHz Tesla Coil


Original poster: "Antonio Carlos M. de Queiroz" <acmdq@xxxxxxxxxx>

Tesla list wrote:

 >101,182 turns of #40 SF wire
 >
 >Wire length 21,327 feet, weight 0.66 pounds, DC resistance 2237 2
 >ohms
 >
 >Inductance 4.1896 henries


An induction coil, that can be operated as a Tesla coil if you
want, has parameters close to these. The huge inductance is
obtained by using a magnetic core and a secondary wound as a
stack of flat coils.

Antonio Carlos M. de Queiroz