RE: The PING Test

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "John H. Couture by way of Terry Fritz <twftesla-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>


Antonio -

I agree with what you say about the continuous-wave, sinusoidal
steady-state, conditions regarding the Q factor. However, the Q factor is a
pure number derived from a dimensionless ratio (wL/R) that can also be
applied to any TC secondary coil. John Freau says tests have shown that when
the secondary coil turns are increased the sec voltage increases without any
other changes in the TC system except to retune by changing the pri coil
taps. John, can you give us more details? This indicates the Q factor has
been increased. The two equations involved are

    Q = 6.283 F L/R
    Vs = Q Vp Eff

The tests indicate that according to the first equation the (F L) has
increased more than the R has increased giving a larger Q factor. The tests
also indicate that according to the second equation the secondary voltage
has increased because the Q factor increased or because the Eff increased or
both. Maybe it should be called a performance factor rather than a Q factor.
I believe the next tests for this TC would be to test for the new Q factor
(Ping Test) and the new efficiency (Lamp Test) to determine how much these
two parameters have changed compared to the original values.

It is interesting that the TC sec voltage and spark length are being
increased without changing the input wattage or the pri capacitor. This can
only mean an increase of energy in the sec coil and an increase in the
overall efficiency of the TC system.

Do you or any other coiler see any problems with this reasoning?
For the present you can ignore the streamer loading as this can be addressed
later.

John Couture

------------------------


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, September 25, 2002 6:56 PM
To: tesla-at-pupman-dot-com
Subject: Re: The PING Test


Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>

Tesla list wrote:

> Original poster: "John H. Couture by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>
>
> Antonio -
>
-------------------  snip

All talk about Q affecting the -maximum- gain of a TC-like system is
for continuous-wave, sinusoidal steady-state, conditions. Not for
operation by capacitor discharge.

--------------------- snip


Antonio Carlos M. de Queiroz