Re: TC Critical Coupling

• To: tesla-at-pupman-dot-com
• Subject: Re: TC Critical Coupling
• From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 09 May 1999 22:46:34 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

> Original Poster: "John H. Couture" <COUTUREJH-at-worldnet.att-dot-net> 
 
<snip>

>   Raising the secondary can be used to find the critical coupling point but
> this is self defeating because it reduces the magnetic flux linkages which
> reduces the TC output. 

Therefore, one can do better than critical coupling. Therefore, 
critical coupling does not produce an optimized coil.
QED.

Malcolm



> For optimal power output the TC must be designed
> correctly from the start in order that the secondary does not have to be
> raised to make it work at all, usually to prevent sparkovers.  
> 
>   The 830 primary amps and the 32.4 secondary amps are instantaneous peak
> amps. In my TC Notebook I show how the primary amps are found.
> 
>    Ip = Vp sqrt(Cp/Lp)
>  
>   These instantaneous amps are high and the reason the primary wiring must
> be large. Note that the magnetic flux from the primary coil is dependent on
> the turns times the amps. Using more turns as some coilers recommend would
> not help if the primary wiring was large enough for the current. In fact the
> added resistance of more turns would reduce the magnetic flux and the TC
> output.
> 
>   Thank you again for replying to my post.
> 
>   John Couture

• Prev: Re: How to INCREASE leakage inductance
• Next: Re: Coupling vs. Racing Arcs
• Index(es):
  • Main
  • Thread