Re: [TCML] 1/4 wavelength theory ??

[mddeming@xxxxxxx]

Yes, but once you make the wire into a coil, the length of the wire is no longer the determining factor. The L, the C, and the top;oad C are the main determinants of the nodal positions along the coil. 

Matt D.










-----Original Message-----
From: Weinhold Shannon L <Shannon.L.Weinhold@xxxxxxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Mon, Feb 8, 2010 5:50 pm
Subject: RE: [TCML] 1/4 wavelength theory ??



This is puzzling. Isn't the 1/4 wavelength the earliest antinode,
hereby representing the point in the resonator where the amplitude of
he standing wave is a maximum? I mean, sure, you could have it off from
hat length by some degree without noticing a huge degree of variation,
ut shouldn't that still be the goal to shoot for?
hat would be the stance of an electrical engineer according to the
ooks anyway. Perhaps its different in practice?
lease enlighten us with more clarity ole wise one. 

hannon Weinhold
lasdja
-----Original Message-----
rom: Lau, Gary [mailto:Gary.Lau@xxxxxx] 
ent: Monday, February 08, 2010 7:30 AM
o: Tesla Coil Mailing List
ubject: RE: [TCML] 1/4 wavelength theory ??
The wire length can be made to be ANY proportion of the wavelength by
imply selecting the proper topload.  The take-home message is that
othing special occurs when the wire length equals the
uarter-wavelength, and that there is no reason to use that as a goal
hen designing a secondary.  That one should target the
uarter-wavelength for the wire length is a myth that needs to be
ispelled. 
Regards, Gary Lau
A, USA
> -----Original Message-----
 From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On 
 Behalf Of Gary Peterson
 Sent: Monday, February 08, 2010 10:01 AM
 To: Tesla Coil Mailing List
 Subject: Re: [TCML] 1/4 wavelength theory ??
 
 > . . . It's funny that some of the computer tesla coil programs still
> > mention the topload capacitance to tune for 1/4 wavelength. . . .
 
 That's because a Tesla coil secondary is a 1/4-wave helical resonator.
 
 The length of wire may be made EXACTLY 1/4-wavelength long.by 
 adjusting the proportions of the inductor and/or the terminal.
 
 See http://www.nedyn.com/TeslaIntlSymp2006.pdf for additional
nformation.
 
 ----- Original Message -----
 From: "Shaun Epp" <scepp@xxxxxxx>
 Subject: Re: [TCML] 1/4 wavelength theory ??
 
 
 Thanks to all that responded to my questions.
 
 It's funny that some of the computer tesla coil programs still mention
> the topload capacitance to tune for 1/4 wavelength.  That's was why I 
 ask this question.
 
 thanks,
 
 Shaun Epp
 
 
 
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