Re: [TCML] Homebuilt Transformer - Can you add shunts?

[bartb <bartb@xxxxxxxxxxxxxxxx>]

Richie used an air gap. This should be possible also with your core 
type. This is probably easier than trying to insert shunts as a magnetic 
leakage bypass with your particular core shown. Lot's of measurements 
are needed until you find the amount of leakage current needed for 
desired regulation. I think probably a simple air gap will be best with 
this core of which you can do by inserting a thin sheet of poly (or 
layers of) at the joining of the two halves.

Take care,
Bart

Phil Tuck wrote:
> Hello.
>
> I am in the process of rewinding a transformer from a UK RADAR set. A
> drawing of the core with sizes can be seen here 
>
>  
>
> http://homepage.ntlworld.com/follies/tesla/radartransformer.html
>
>  
>
> Eventually it will be a 2 to 3 Kva unit   ( originally it was 2Kva 8.25 kv @
> 250 m/a with  AWG 14 on the primary & AWG 24 on the secondary)
>
> Before I start finalizing turns etc, I wondered can I introduce a magnetic
> shunt to limit the shorted current, like NST's use, and thus avoid having to
> use a Ballast?
>
> If so would I just need to introduce some packing between the jointing faces
> ?
>
>  
>
> Richie Burnett has done a similar thing with some inductors to stop
> saturation at 
>
> http://www.richieburnett.co.uk/parts2.html#ballast
>
>  
>
> Looked at a few other webpages on homebuilt transformers but none seem to
> use this method for a transformer though, but I thought this was the same
> method employed by NST's
>
>  
>
> Thanks
>
> Phil
>
>  
>
>      
>
>  
>
>  
>
>  
>
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