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Primary field strength
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From: Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Sunday, August 23, 1998 4:33 PM
To: Tesla List
Subject: Re: Primary field strength
Hi Chris,
> From: chris.swinson [SMTP:chris.swinson-at-zetnet.co.uk]
> Sent: Friday, August 21, 1998 12:41 PM
> To: Tesla List
> Subject: Re: Primary field strength
>
> Hi, Malcolm
>
>
> <SNIP>
>
>
> it is derived from Conservation of Energy.
>
> 0.5CpVp^2 = 0.5CsVs^2 where Vp = gap firing voltage
>
> => Vp^2*Cp/Cs = Vs^2
>
> => Vp*SQRT(Cp/Cs) = Vs
>
> In other words, you can't get more out than you put in and that
> equality assumes no losses in transferring the energy from primary to
> secondary. Note that it also works by Vs = Vp*SQRT(Ls/Lp) since
> LsCs = LpCp (tuning requirement).
>
> Malcolm
>
>
> Ok, But what about the resonance of the coil. You get the first 50Hz pulse
> then, the next pulses are whole due to the EMF charging the capacitor up.
> Surly this is free energy ?
>
> Chris.
Nothing is free in this world :) Resonance allows the secondary to
accumulate energy during the pri-sec transfer. It can't do more than
that. Not sure what 50Hz has to do with this?
Malcolm