Re: SIZE of RF chokes?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>

adding a massive resistance will only make my entire system less 
efficient. It will reduce my current by...i am not sure, .5 to 5 percent

*****I would love a terry filter, but unfortunately i am a 
perfectionist, and have made my coil look very good. As a consequence 
of this, MANY components are very close together.

-I DOUBT I HAVE ROOM FOR A TERRY FILTER, NOT TO MENTION THE $. I have 
about 2" by 3.5" of space for a protection circuit

I can send TONS of images of my coil, and safety circuit. Want to see them?
Ill send some photos of the available space for my safety circuit too.

***** believe it or not, i dont know what LTR means.




> From: "Tesla list" <tesla@xxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Re: SIZE of RF chokes? Date: Wed, 16 Nov 2005 18:27:16 -0700
>
> 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.
> >
> > _