Re: question about "lambda" (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 21 Aug 2007 01:14:01 EDT
From: Mddeming@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: question about "lambda" (fwd)

 
In a message dated 8/21/07 12:04:41 A.M. Eastern Daylight Time,  
tesla@xxxxxxxxxx writes:

---------- Forwarded message ----------
Date: Mon, 20 Aug 2007  12:40:41 -0500
From: Matthew Boddicker  <shmerpleton_town@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re:  question about "lambda" (fwd)

It's Matthew Boddicker.

When you  say 1/2 or 1/4 wavelength, 1/2 or 1/4 of what? What would be a full 
 
wavelength? I guess a more accurate question would be, what is the  fraction 
compared to?

Thanks,
Matthew  Boddicker



Hi Matthew,
 
A single-ended TC is called a 1/4-wave because the voltage and current  
distribution along the secondary closely approximates the distribution along a  
long wire antenna that is 1/4 the wavelength at the operating frequency.  i.e. 
minimum voltage at bottom, maximum voltage at top, minimum current at top,  
maximum current at bottom. the relationship is f=c/lambda, where c=300,000  km/sec.
 
Matt D.



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