Re: HV at very LOW freq. Tesla Coil

To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
Subject: Re: HV at very LOW freq. Tesla Coil
From: Tesla List <tesla-at-stic-dot-net>
Date: Wed, 17 Sep 1997 08:22:18 -0500
Approved: tesla-at-stic-dot-net

From: 	Phil Chalk[SMTP:philoc-at-ozemail-dot-com.au]
Sent: 	Wednesday, September 17, 1997 6:32 AM
To: 	Tesla List
Subject: 	Re: HV at very LOW freq. Tesla Coil

Tesla List wrote:

> From:   Bert Hickman[SMTP:bert.hickman-at-aquila-dot-com]
> Reply To:       bert.hickman-at-aquila-dot-com
> Sent:   Wednesday, September 17, 1997 12:20 AM
> To:     Tesla List
> Subject:        Re: HV at very LOW freq. Tesla Coil
>
> Tesla List wrote:
> >
> > From:   Jean-Marc Patten[SMTP:jp001-at-mail.orion-dot-org]
> > Sent:   Tuesday, September 16, 1997 12:06 PM
> > To:     Tesla List
> > Cc:     'Tesla List'
> > Subject:        Re: HV at very LOW freq. Tesla Coil
> >
> > well i have about 10 oil burner xformers at 10Kv -at-10Ma but i dont
> think
> > they will have the juice to do the job. But to answer your question
> about
> > 10cps <10Hz>. I have looked all over the net for info but everyone
> is High
> > voltage high freq.
> > thank you for responding
> >
> > john
> >
> > On Tue, 16 Sep 1997, Tesla List wrote:
> >
> > >
> > > From:         Bert Hickman[SMTP:bert.hickman-at-aquila-dot-com]
> > > Reply To:     bert.hickman-at-aquila-dot-com
> > > Sent:         Tuesday, September 16, 1997 8:18 AM
> > > To:   Tesla List
> > > Subject:      Re: HV at very LOW freq. Tesla Coil
> > >
> > > Tesla List wrote:
> > > >
> > > > From:   Jean-Marc Patten[SMTP:jp001-at-mail.orion-dot-org]
> > > > Sent:   Monday, September 15, 1997 4:22 PM
> > > > To:     tesla-at-pupman-dot-com
> > > > Subject:        HV at very LOW freq. Tesla Coil
> > > >
> > > > I Need any info on this subject i am researching this befor i
> invest to
> > > > much $$ all info wanted
> > > >
> > > > thankyou
> > > >
> > > > John
> > > > jp001-at-mail.orion-dot-org
> > >
> > > John,
> > >
> > > How low a frequency? How big a coil you willing to make??
> > >
> > > -- Bert --
> > >
> > >
> > >
> > >
> > >
>
> John,
>
> A Tesla Coil's operating frequency is determined by the electrical
> characteristics of the secondary and the top terminal. In general, the
>
> bigger the physical size of the system, the lower the operating
> frequency. In order to operate at 10 Hz, truly gargantuan sizes are
> needed:
>
> Let's assume that we make a toroid of 40 feet by 5 feet, and put it
> atop
> a coil 20 feet in diameter with a winding 30 feet high, with 800 turns
>
> of space-wound #1AWG wire. The toroid capacity will be around 400 pF,
> the resonator self-C will add another 290 pF, and the resonator
> inductance will be about 2 Henrys. The combination will yield an
> operating frequency of about 4 kHz.
>
> Hmm... we still need a bigger coil and toroid. Let's double all
> dimensions, and try again, but space-wind to get the same number of
> turns:
> Toroid Size = 80 x 10 feet;   Ctoroid ~ 900 pF
> Resonator size = 40 feet diameter and 600 feet high; Cself ~ 575 pF
> Resonator Inductance ~ 3.9 Henry.
> Resonant F = 2 kHz
>
> Well, as you can see, getting down to 10 Hz would be quite a
> challenge!
> It turns out that a resonator about 1500 feet in diameter and 2250
> feet
> high topped by a toroid of about 6000 feet x 1000 feet would do it.
> That
> would even put Greg's new monster coil to shame! And it might take
> most
> of the electrical power capacity of the North American continent to
> fire
> it up properly...
>
> Safe coilin to you, John!
>
> -- Bert --

Yeah, but someone built all those pyramids, & stuff.................

Not sure just why you want to do this, Jean-Marc, though I can't help
thinking it has something to do with resonating the Planet.  Perhaps
your best bet is to use a more 'normal' scale of TC & use it as a
carrier, & modulate it at ~10Hz....   How?  Well..........

Cheers,

Phil C.