Re: Wire Length (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Moderated and approved by: Gerry Reynolds <greynolds@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Sun, 24 Dec 2006 09:16:03 -0800
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Wire Length (fwd)

Thanks Antonio! I should probably state again that the coil is being 
design for an SRSG drive (experimentally). Final k is not written in 
stone. Insulation problems are quite are with this configuration, but we 
will see. Depending on how the rim grounded measurements work out, much 
could change.

Take care,
Bart

Tesla list wrote:

> <>Moderated and approved by: Gerry Reynolds <greynolds@xxxxxxxxxx>
>
> ---------- Forwarded message ----------
> Date: Sun, 24 Dec 2006 09:34:22 -0300
> From: Antonio Carlos M. de Queiroz <acmdq@xxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Re: Wire Length (fwd)
>
>The highest coupling coefficients that allow complete energy transfer are:
>
>Mode 1:2, energy transfer in  1.0 cycle:  k= 0.6000000000
>Mode 2:3, energy transfer in  1.5 cycles: k= 0.3846153846
>Mode 3:4, energy transfer in  2.0 cycles: k= 0.2800000000
>Mode 4:5, energy transfer in  2.5 cycles: k= 0.2195121951
>Mode 5:6, energy transfer in  3.0 cycles: k= 0.1803278689
>Mode 6:7, energy transfer in  3.5 cycles: k= 0.1529411765
>Mode 7:8, energy transfer in  4.0 cycles: k= 0.1327433628
>Mode 8:9, energy transfer in  4.5 cycles: k= 0.1172413793
>Mode 9:10, energy transfer in  5.0 cycles: k= 0.1049723757
>
>These values are critical only  above k=0.18, when the gaps between the 
>modes are quite large.
>In the gaps areas, some of the energy in the primary capacitor is not 
>transferred to the secondary
>capacitance, but the amount is negligible for k<0.18.
>k=0.4 is sufficiently close to mode 2:3. 99.6 % of the energy is 
>(ideally, no losses) transferred.
>The worst value in the range is k=0.47, that transfers only 86.4%
>The absolute worst for high k is k=0.8, that transfers only 59.3 %.
>There numbers in the mode are the ratios between the two resonance 
>frequencies of the system.
>High values of k are not common in Tesla coils due to insulation 
>problems between the two
>coils. Quenching of the primary gap is difficult too.
>
>Antonio Carlos M. de Queiroz
>
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