[TCML] Measuring "critical coupling" with an oscilloscope and signal generator?

["Jon Danniken" <danniken@xxxxxxxxxxx>]

Hello,

I read the article on coupling written by D.C. Cox in the TCBA Volume 3, 
Number 2 (full article available for viewing on teslauniverse).  In that 
article, DC provides a graph to show the effects of coupling on the 
secondary current, as shown here:

http://teslacoils.home.comcast.net/CriticalCoupling.jpg

What I am wondering is if it is possible, using a signal generator and an 
oscilloscope, to actually determine the point at which critical coupling 
occurs.

Note: there is a page showing how to use a signal generator and an 
oscilloscope for other teslacoil measurements in the following link; would 
either of these methods work for determining the point of critical coupling? 
If so, what would I want to look for to investigate the effects of coupling, 
in an effort of achieving critical coupling?

http://www.hvtesla.com/tuning.html

Thanks for any suggestions on this,

Jon 

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