The amazing variable choke!!

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Original poster: "J Dow by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jdowphotography-at-hotmail-dot-com>

Hello all

The amazing variable choke!! Inductive ballast you can change during 
operation!!!
I made a choke. It is 500 ft of 10awg stranded wire on a 1,3/4” pvc pipe 
10” long.
The core that can slide in and out of the pvc pipe is a ½” threaded rod 
bundled with slim steel rods. The core is 10” and fits snugly (yet allowing 
slide) in the pvc pipe
The threaded rod is 20” long and has a wood handle.
I set up my 15/60 nst in a crude Jacobs ladder and weird the ballast in 
line with one side of the 110 power feed. My variac was set to full and 
with the core OUT the meter read 10-12 amps. And as I slid the core in the 
amps fell to around 1 AMP!! The choke hummed more and the fine 15kv ark 
grew quieter.
With no choke the amp’s jump from 12-17. So the coreless choke acts as an 
inductive ballast. The next question is how it will work with my soon to 
be, 4 pack mot stack.
I dig this thing!

Read you later
Josh