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

RE: 5MV pressurised oil immersed bipolar tesla coil by Breit 1930



Original poster: "Malcolm Watts" <m.j.watts-at-massey.ac.nz> 

Hi John,

On 28 Nov 2003, at 18:45, Tesla list wrote:

 > Original poster: "John H. Couture" <couturejh-at-mgte-dot-com>
 >
 >
 > Malcolm -
 >
 > The description of this Tesla coil circuit states that the operating
 > voltage is 750 KV and the resonant frequency is 130 Kc/S. I believe
 > this means that V2 = 750 KV and that C2, G, amd I are operating in
 > parallel at 750 KV. For capacitor (C2) to be 750 KV would indicate
 > that it must represent the self capacity of the coil (L2). The Gap
 > (G)is a typical sphere type voltage measuring gap and the device
 > labeled (I) could be a receptacle for the object to be tested such as
 > an insulator, etc. The total capacitance of C2, G, and I in parallel
 > with the inductance L2 would form a tank circuit. The resonant
 > operating frequency of this tank circuit would be 130 Kc/s. Given the
 > inductance of L2 you could easily calculate the the total capacitance
 > of the secondary system.
 >
 > The output voltage V2 could be easily varied by varying the voltage of
 > the primary circuit. I do not understand why a voltage divider would
 > be needed. Could you give more information on this feature?

To minimize loading on the secondary which would otherwise seriously
affect the measurement. Also, one cannot bring hundreds of kV to a
small rod connecting anything inside the tank to the outside world
without encountering serious flashover problems, if not inside the
tank then outside it. As I understand the setup, the measuring gap is
measuring just a portion of the full potential the coil terminal/s
reach.

Malcolm