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Re: Limiting Safety Gap Current



Malcolm,
Yes, a perfect inductor doesn't dissipate any power,
but if you look closesly at my posting you will see
that I explicitly remarked that with an iron core the
sucker is now an induction heater. Induction heaters
DO dissipate power. Lots of it! In the form of heat!

Fr. Tom McGahee

----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: Limiting Safety Gap Current
> Date: Sunday, February 07, 1999 10:18 PM
> 
> Original Poster: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> 
> 
> Hi Fr Tom,
> 
> > Original Poster: "Thomas McGahee" <tom_mcgahee-at-sigmais-dot-com> 
> > 
> > Personally, I don't think using resistors to limit the
> > safety gap current is the way to go. I would
> > use an inductance in series with the safety gap. This
> > would be much more effective, since a coil or choke
> > is quite good at limiting the discharge current. In
> > fact, that is what happens with your primary coil.
> 
> Yes, but it also rings.
>  
> > Since the safety gap rarely fires anyhow, the choke coils
> > wouldn't have to be all that large. You can add a core 
> > material such as iron or ferrite to increase inductance,
> > but be aware that you will have just constructed a mini-
> > induction heater. But hey, you have to dissipate the 
> > energy SOMEHOW, and an inductive load may just be the
> > best way to do it.
> 
> Inductors theoretically don't dissipate power do they? 
> 
> Malcolm
>