Re: Fantastic new inductive ballast completed

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

Original poster: "Gregory Peters by way of Terry Fritz <twftesla-at-qwest-dot-net>" <s371034-at-student.uq.edu.au>

Quoting Tesla list <tesla-at-pupman-dot-com>:


Josh,

> Original poster: "J Dow by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <jdowphotography-at-hotmail-dot-com>
> 
> 
> 
> wow sounds good!

Thanks.

> I made a slide choke for use in ballasting a 4 pack MOT PSU,
> but I never got 
> to test it.
> I’m very interested in others working along the same lines.
> 
> So, what you made was a slide choke?

Not exactly. This choke has two "c" cores, these, when joined, form a 
complete loop, which is very magnetically efficient. The wire is 
wrapped around some PVC pipe. The cores are only looped at the end 
and have straight sides. I straight part of the cores runs through 
the wirewound PVC. I can vary the current by placing wooden shims 
bewteen the two cores to vary the air gap.

> How do you move the core in and out?

The two cores are held together by gravity, but the gap between the 
two cores is determined by the shim thickness.


> Do you have pics?

Yes. I'll post some soon to my website. Will let you know.


> Where did you get the core?

The core came from an old pole pig I had lying around.

> Questions questions questions…..

If you want to make a slide choke. See my next list message.


Cheers,

Greg.

> 
> Read you later
> Josh
> 
> 
> 
> 
>