Re: tapped primary

[Hollmike-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

In a message dated 6/2/2000 5:00:39 PM Mountain Daylight Time, 
tesla-at-pupman-dot-com writes:

> 
>  ?  what does this mean?  What are some specifications, information etc.
>  Thanks
>  
>  
   You tap the primary in order to change the inductance and therefore the 
primary circuit's resonant frequency.  This is the most convenient way to 
tune your system so that the primary resonant frequency matches the secondary 
resonant frequency.
     Tapping the primary simply means changing the spot where one of the 
leads is connected to the primary coil thereby changing the number of turns 
on the coil.  I usually tap the connection on the outer turns of my primary 
since it is a flat or Archimedes spiral.  That way the coupling isn't changed 
at the same time I am adjusting the inductance.  
  Hope this helps
Mike