[Milsurplus] Triad Choke

[Richard Brunner]

John, OM:
Yes indeed the results are not perfect, but very useful.
Once-upon-a-time, a long time ago, (my first real job) I designed
transformers, reactors, rectifier transformers, burdens, etc, and it was
fun.  They were much larger than the ones we play with, but the
principles are the same. I used bakelite spacers in the air gap for fear
that the iron would crush paper as the magnetic circuit tried to
close...

I once tried a true rms reading meter with strange results.  The moral
is trust your meter if you understand it...   

Richard, AA1P

On Mon, 2010-12-27 at 11:05 -0800, J. Forster wrote:
> Hi Richard,
> 
> Swinging chokes are hard to design and do vary quite a bit due to air gap
> tolerances. One also has to take into account the compliance of the gap
> spacer as the forces can be very large.
> 
> On your previous post, it's a clever measurement technique. The results
> are not perfect, but it should give good approximate results, especially
> for unknown choke designs.
> 
> Thanks,
> 
> -John
> 
> =============