Re: [TCML] ferrite variac

[jhowson4@xxxxxxxxxxx]

yea I thought of that but this is all I have so once i get this to work for free maybe I will pay for a core from a junk yard or something later. basically I want to see if I can actually make it work first.   
all i have is 21 gauge wire.  At the moment.  Do you guys think it would be a good idea to submerge it in oil.

-------------- Original message -------------- 
From: bunnykiller <bunnikillr@xxxxxxx> 

> if you are planning on using 120VAC to power the homemade variac.... I 
> would go for something other than ferrite... besides, a 4"dia X 4" tall 
> variac would handle about 5-9 amps ... I would start at a 20A rating for 
> tesla coil usage.. 
> 
> Scot D 
> 
> 
> 
> jhowson4@xxxxxxxxxxx wrote: 
> 
> >hello all, 
> >I am trying to make a home brew variac (for tesla coil use). I got my hands on 
> 4 (4in outer diameter 3in inner diameter 1in high) ferrite cores. I am planning 
> on stacking them together for one big ferrite core. do you guys think that this 
> will work for a variac core? or do I need a laminated iron core? 
> > 
> >many thanks 
> >Jay Howson 
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> 
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