RE: [TCML] transformer theory questions

["Lau, Gary" <Gary.Lau@xxxxxx>]

Hi David,

I had thought about the possibility of eddy current losses, but I also recall seeing some cores having a weld tying all of the laminations together, clearly shorting the laminations.  It may be that to get eddy currents, the laminations may need to be shorted in two different places?  I don't recall if the welded cores I've seen had a single bead or not, and it's unclear if a hack saw hack job would also short in multiple places.  But "don't do it" is surely the safest course of action!

Regards, Gary Lau
MA,  USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of David Rieben
> Sent: Monday, September 21, 2009 11:09 AM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] transformer theory questions
> 
> 
> Hi Thomas, Gary, all,
> 
> I would also suspect some unwanted eddy current losses/heating of the core
> to result from
> "cutting across the laminations", too, as this would almost certainly short
> some of the
> laminations together, electrically.
> 
> 
> >> What happens if you cut into the frame of a transformer, cutting the
> >> across
> >> the iron lamination?
> 
>  > I wouldn't do that.  I expect that the consequences are largely
> mechanical - like you won't be able to get it back together again after the
> laminations are mangled.
> 
> \
> > Many thanks
> >
> > Thomas
> 
> > Regards, Gary Lau
> > MA, USA
> 
> David Rieben
> 
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla