Re: Weird ideas

From: 	Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: 	Thursday, December 11, 1997 3:27 PM
To: 	Tesla List
Subject: 	RE: Weird ideas

> From:   John H. Couture[SMTP:couturejh-at-worldnet.att-dot-net]
> Sent:   Wednesday, December 10, 1997 1:04 PM
> To:     Tesla List
> Subject:    Re: Weird ideas

<header snip>

> >>    In fact to determine the efficiency of a Tesla coil when no secondary
> >> sparks are present would be an interesting test. Does anyone have any
> >> suggestions?
> >> 
> >>   John Couture
> >
> >I have already posted a very simple way of measuring pri-sec transfer 
> >efficiency that is quite accurate. It is in the archives. You must 
> >monitor the secondary ringups with a scope and put a large enough 
> >topload on to prevent breakout. Do this in single shot mode as 
> >anything else will hammer the cap/s to pieces.
> >
> >Malcolm
> -----------------------------------------------------------------
>   Malcolm -
>  What do you mean by pri-sec transfer efficiency?

Exactly that.
>   As I mentioned before the inductive pri-sec transfer efficiency is always
> 100 percent.

Really? You are assuming (a) that the coils are coupled to nothing 
else - a physical impossibility, and (b) that there is no effective 
resistance in either. The fact that the Q's are not inifinite gives 
the lie to that last one at least.

>   Your test was not the overall efficiency of a TC with no sparks.
>   In the above test I was thinking of wallplug to secondary terminal
> efficiency with no sparks.
>   Joihn Couture