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Secondary resonance freq
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From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Saturday, June 06, 1998 1:40 PM
To: Tesla List
Subject: Re: Secondary resonance freq
to: Marco
The lowest freq is your true resonant freq. The other freq's are "partial
resonances" and tend to absorb some percentage of the applied power. This
is one reason why large toroid toploads work so well with resonance
transformers. The toroid topload will force the coil to operate with most
of its energy at the primary resonant freq, ie, 324 KHz, and reduce the
energy in the other resonances to very low values. A 12 x 3 toroid will
work well with your 4.3 inch dia. sec inductor.
DR.RESONANCE-at-next-wave-dot-net
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> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-pupman-dot-com>
> Subject: Secondary resonance freq
> Date: Friday, June 05, 1998 9:46 PM
>
>
> ----------
> From: Marco Denicolai [SMTP:marco-at-vistacom.fi]
> Sent: Friday, June 05, 1998 1:11 AM
> To: tesla-at-pupman-dot-com
> Subject: Secondary resonance freq
>
> I measured yesterday the resonance frequencies of my secondary. It is a
> 4.3" diameter PVC tube, winded for a length of 19.7" with AWG 26 wire.
> I got the following results:
>
> 324 KHz
> 813 KHz
> 1475 KHz
> 1766 KHz
> 2053 KHz
>
> These without any top toroid or sphere. I used a function generator (sine
wave)
> and oscilloscope.
>
> I was waiting to measure the fundamental and all odd harmonics (x3, x5,
etc.)
> but can anybody explain to me how I have got the above readings?
>
>
>
> ________________________________________________________________________
>
> Marco Denicolai Vista Communication Instruments, Inc.
> Hardware Development Manager www.vistacom.fi
>
> marco-at-vistacom.fi Kaisaniemenkatu 13 A
> fax: +358-9-622-5610 SF-00100 HELSINKI
> phone: +358-9-622-623-15 Finland
>
> Remember, Murphy was an optimist! I am not...
> ________________________________________________________________________
>
>