Re: VTTC chokes

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "R. Bergmann by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bergmann_-at-hotmail-dot-com>

I am going to use them to block RF from shorting out my transformer.  I also 
want to use some in a DC filter.

Thanks,
Ryan





>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: VTTC chokes
>Date: Sun, 23 Jun 2002 14:40:37 -0600
>
>Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
><evp-at-pacbell-dot-net>
>
> > > I need some choke for my vttc.  I am using two svetlana 572b tubes, a
> > > 2100volt 300ma plate transformer, and a 6.3volt 8amp filament 
>transformer.
> > > There is a nice choke at rfparts-dot-com(rfc-3), but it is too expensive.  
>Do
> > > you know any good places to get chokes?  And any suggestions on the 
>ratings
> > > I should use are very appreciated.
> > >
> > > Thanks,
> > > Ryan Bergmann
>
>	You haven't said what you want to do with the chokes, or what
>inductance they must have or what current they must carry; all are
>important.  There have been recommendations on use of ferrite-cored
>chokes here.  You should be aware that any coil with a core of magnetic
>material like ferrite is subject to saturation problems, and need to
>understand them before using then.  A DC current can saturate the core,
>rendering it useless, but excess AC voltage for the frequency, turns,
>and core area can and often does cause saturation.  I suspect that most
>of the ferrite-cored coils guys are using are saturated and not really
>doing any good.
>
>Ed
>
>
>