David,
Beautiful coil, a real work of art. Thanks for sharing, I have it bookmarked.
Greg
Sent from Mail for Windows 10
From: David
Sent: Wednesday, 1 August 2018 6:11 AM
To: tesla@xxxxxxxxxx
Subject: Re: [TCML] Back again....and Tesla Magnifier Tuning
Welcome back! .... I'm always flying under the radar and don't talk much
but it's good to see people come back. I built a tabletop magnifier
years ago, I don't know if I got the tuning the way it's suppose to be
but, building it was a lot of fun.
https://www.flickr.com/photos/21962809@N02
Please keep us posted.
Dave in Nokesville
On 7/31/2018 8:37 AM, Daniel Kunkel wrote:
> Gregory,
> Welcome back! I too took a sabbatical from coiling and am back at it
> recently.
>
> My understanding is that the secondary coil exists to:
> --increase voltage by transformation (no resonance)
> --increase energy transfer from primary to secondary due to tight coupling
> (tight coupling prohibits resonance anyway)
> So yes, tune the primary to the extra coil.
>
> Here is some good reading Richard Hull on magnifiers that should help a lot.
> Page 1: http://www.stargazing.net/Astroman/Magnifier.html
> Page 2: http://www.stargazing.net/Astroman/Magnifier1.html
>
> Good luck!
> ~Dan
> Kansas City area
>
>
>
>
> On Mon, Jul 30, 2018 at 11:14 PM, Gregory Peters <greg.j.peters@xxxxxxxxx>
> wrote:
>
>> Hi All,
>> Well after a few years off I'm back into coiling. I've been into coils on
>> and off since the mid 90s and it's great to see the pupman list still going
>> strong! How many members are there these days I wonder?
>> Anyway, I have a magnifier project in mind and am interested to know about
>> the finer details of tuning these beasts. Is the primary normally tuned to
>> match the resonant frequency of the extra coil alone (plus some for
>> streamer/corona loading), or is it tuned to match the aggregate resonant
>> frequency of the combined secondary and extra coil? Or somewhere else
>> completely?!
>> It seems like if the primary + secondary system is truly meant to act as a
>> transformer base driving the extra coil, then the tuning should be closer
>> to that of the extra coil alone than it is to the combined secondary and
>> extra coil system. Hope that makes sense!
>> Any advice would be most appreciated!
>> Regards,
>> Greg.
>> _______________________________________________
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>> Tesla@xxxxxxxxxxxxxxxxxx
>> https://www.pupman.com/mailman/listinfo/tesla
>>
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