Re: More Coupling...

["Tesla list" <tesla@pupman.com>]

Original poster: "Terry Fritz" <twftesla@uswest.net>

Hi Bart and Paul,

The measurements for my big coil (as it was then) and the coil's details are
at:

http://hot-streamer.com/TeslaCoils/MyPapers/sgap/sgap.html

For those that wish to help, the "best method" of measuring coupling is at:

http://www.pupman.com/listarchives/1997/november/msg00898.html

Cheers,

        Terry



At 05:52 PM 12/21/2000 -0600, you wrote: 
>
> Hi Paul and Everyone, 
>
> My reply here is to ask (plead) for more coiers to make coupling
> measurements. All that is needed is a DMM capable of volt and amp readings
> (or meters capable of this). Also needed is a primary that can be moved above
> and below the secondary base line in steps (or the secondary to achieve the
> same result). Measurement is easy (we can define that later). 
>
> If case you haven't kept up with this thread, I have found an increase in
> coupling error to Paul's program "acmi" predictions (error increases in the
> direction of increased coupling). What I would like to find out with your
> help is: 
>
> 1. is current changing during measurement (and not realized), 
> 2. is the flat primary shape causing the error, 
> 3. if #2 is correct, does acmi need to apply a correction of some type, 
> 4. if #3, is this true for only flat primary's? 
> 5. Lot's of other little tid bits to increase our coupling knowledge. 
>
> So we need some flat, helical, and conical coupling measurements as well.
> This type of comparison has been needed for some time and the information
> will add another little wrinkle in our coiling brains. 
>
> Any takers? Anyone? 
>
> Thanks, 
> Bart 
>
> Tesla list wrote: 
>>
>> Original poster: "by way of Terry Fritz <twftesla@uswest.net>"
>> <paul@abelian.demon.co.uk> 
>>
>> Barton B. Anderson <tesla123@pacbell.net> wrote: 
>>
>> <snip>
>> The only way to take this further is with more results from other 
>> sources. If a systematic error develops, either it can be calibrated 
>> out of acmi, or I can do something smarter with the current filaments.
>