Re: [TCML] ferrite variac

[jhowson4@xxxxxxxxxxx]

Ok, I think I am going to give it a go and see how I do.   How did you make your slider?

-------------- Original message -------------- 
From: Finn Hammer <f-h@xxxx> 

> There are silicon iron cores and ferrite cores, all for a reason. 
> 
> Iron cores to cater for the demands that are presented in a low 
> frequency environment, ferrite for the higher frequencies. 
> Iron won`t do at RF, and ferrite will perform poorly at 50-60Hz. 
> 
> Take it from this list member, who has actually built a variac himself:: 
> 
> http://home5.inet.tele.dk/f-hammer/tesla/museum/variac/variac.htm 
> 
> It`s only worth it if you really like to practice winding technique, and 
> do it over and over until it looks half decent. 
> 
> If your main goal is to vary voltage, boy one at Ebay. :-) 
> 
> And you definitely don`t want to put it under oil. 
> 
> Cheers, Finn Hammer 
> 
> 
> 
> jhowson4@xxxxxxxxxxx skrev: 
> > 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. 
> > 
> > 
> 
> 
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