Re: Proposed capacitive transformer TC?

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

Original poster: "Jolyon Vater Cox by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>

Antonio,
Sorry about non-constant width font (Arial) which chewed up my
diagram -ASCII art is new to me. Could you tell me which font is best for
this purpose?
My apologies,
Jolyon

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, August 03, 2002 5:45 AM
Subject: Re: Proposed capacitive transformer TC?


> 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: "Jolyon Vater Cox by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
> >
> > Antonio,
> > has the following topology ever been tried:
>
> (Please use a font with constant width when making ascii drawings)
>
> >                                   (=+=)
> >                                     I
> >                                     L2
> >                                     L2
> > -------L1-+-------+-------------)   L2   (  EIP1
> >           I       I                 L2
> >  PSU      C1     SG1                L2
> >           I       I                 I
> > ----------+-------+-----------------+-------------GND
>
> > Description:
> > The electric induction plane EIP1 is a metal plate with hole in the
middle
> > wide
> > enough for L2 to stand within the enclosed space without touching; it is
> > connected to L1, C1 and SG1 the spark gap, it  not connected to L2 the
> > secondary coil other than by capacitive coupling.
> > L2 is grounded at one end and connected to a toroid at the other.
> >
> > Would  it work?
>
> L1 can't be in series with the power supply. The high impedance of a
> NST would cancel its effect. The plane also can't be in this position,
> grounded by the gap. With this connection, once the gap fires the
> potential of the plane would suddenly go to zero, and the gap breakdown
> voltage (or a bit less), inverted, would appear at the terminal and
> start an oscillation. But this oscillation would be at low voltage,
> without any further energy transfer from the primary. A better
> circuit would be:
>
>                        (=====) Terminal
>                           |
>                           L2
>                           |
>    o------+--L1--+----(=) | (=)
>           o      |        |
>   PSU    gap     C1       |
>           o      |        |
>    o------+------+--------+-o Ground
>
> When the gap fires, the plane voltage will follow the oscillating
> voltage on C1, transferring energy to the secondary system.
> I tried something like this, placing a pizza pan below L2 as
> induction plate (without a hole. I placed the entire L2 above the
> plane, routing the grounding connection around the plane). There
> is some energy transfer and voltage amplification. A plane with a
> hole would work better, since the most effective place to excite
> electrically is the terminal of L2. If the plane manages to "capture"
> a good fraction of the capacitance from the terminal to the ground,
> a quite efficient system can result. There are three capacitances
> involved, however (C1+plane-ground, plane-terminal, terminal-ground),
> and tuning may be tricky, but is possible.
>
> Antonio Carlos M. de Queiroz
>
>
>
>
>