Re: More rotary gap questions... (fwd)

Subject:       Re: More rotary gap questions... (fwd)
       Date:   Tue, 22 Apr 1997 07:57:17 +1200
       From:   "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz>
Organization:  Wellington Polytechnic, NZ
         To:   tesla-at-pupman-dot-com

Fr. Tom,
         I don't dispute what you say, but which part of the primary 
runs hottest? That is where the most power is lost. I once ran braid
in a primary (just 2 feet) and lost as much power in that as the gap.
As a matter of principle, all interconnects in my serious expts are 
pipe and made as short as possible.


> The wiring that links the tank circuit together can easily have several
> hundreds of volts across it. The voltage drops will be particularly
> large
> at the junctions unless they are soldered or made with a good
> compression
> joint that includes lots of connective surface area. The wiring is an
> often
> overlooked source of energy loss. For some strange reason people can't
> get
> it though their heads that the primary tank circuit is a CIRCUIT (a
> circle)
> that includes the inductance of the connecting wires as well as the
> inductance of the primary coil. I have seen Tesla circuits in which the
> inductive losses due to the twists and turns in the wiring must have
> been
> substantial... say 10 to 15% as large as the primary inductance. That
> affects the tuning too! Use conductors with large surface areas, smooth
> surface areas, and as short and straight as possible. Ideally if your
> primary is 1/4 inch copper tubing, the entire tank wiring should be at
> least as robust. Sometimes you will touch a connection joint after a
> long
> run and you can feel the difference in temperature between the wiring
> and
> the junctures. This is especially true at points where the metals are of
> different kinds.
> Fr. Tom McGahee