Re: SIZE of RF chokes?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>


Toss the chokes and add about 1000 ohm 100 watt resisters (one in 
each leg). Chokes use to be used but it has been shown that they can 
cause more problems than they solve due to parasitic resonances.  You 
may want to search the archieves for the "Terry Filter" to properly 
protect your NST. Also LTR operation is recommended for 
NST's  (1.6*Cres for static spark gaps and 2.8*Cres for SRSGs)

Gerry R.

> Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>
>
> I have read .1 to .3 millihenries.
> On one of your threads, I just read .03 millihenries (30 micro)
>
>
> PLEASE tell me- are my choke the right size.
>
> -I have a 12,000 30ma neon, 60Hz
> -Close to resonant capacitor (supposed to be 6.66nF, but its 7.8nF)
>
>
> * My chokes currently are set up on BOTH sides of my HV circuit 
> (both outputs of xformer)
> * Each choke measures 7.4uH
> * Both chokes are 80 turns of 19gauge wire, on an aircore form, .25 
> X 1.5" long
>
> USING THIS...RANDOM..INFORMATION, CAN YOU TELL ME WHAT SIZE OF 
> CHOKES I NEED, AND ARE MINE THE RIGHT SIZE ALREADY.
> -----------------------------------------------------------------------------------------------------------------------------------
> Plus: my safety gap fires frequently, but not too much. When it 
> fires it becomes the sparkgap.
> *So, should i make a SECOND safety gap after the first?
> *Or, is it ok to fire as the sparkgap. In otherwords, when it acts 
> as sparkgap, will overvoltage occur in my neon?
>
>
> my safety sircuit is set up as:
>
> transformer - connects to safety gap - connects to 7.4uH air chokes 
> on both sides - rest of circuit
>
> I KNOW I TYPED A LOT, BUT I NEED PEOPLE TO ANSWER ALL, OR MOST OF MY 
> QUESTIONS. PLEASE ANSWER MY WHOLE EMAIL.
>
> Thanks.
>
> _