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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.
Malcolm
> 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