Re: [TCML] 2 beginner questions

[eitreim family <eitreimfamily@xxxxxxxxxxx>]

Thanks Greg!  

What I was concerned about was the ability of the small capacitor wires to discharge lots of electrons quickly, especially with a dozen in series.

We'll let you know how it goes once we fire it up.  

Jeff

On May 11, 2012, at 7:04 PM, G Hunter wrote:

The caps will probably hold up fine.  I'm hedging with "probably" because every amateur Tesla coil is a one-off original.  It's not possible to be 100% certain how long any of it will last, since you are using components and materials in a bizarre application they were never intended for!  However, CD942 caps have an excellent reputation, and your little OBIT is not likely to overtax them.

Low resistance continuity is not required on your toroid.  It will work fine.

Cheers,

Greg


--- On Tue, 5/8/12, eitreim family <eitreimfamily@xxxxxxxxxxx> wrote:

> From: eitreim family <eitreimfamily@xxxxxxxxxxx>
> Subject: [TCML] 2 beginner questions
> To: tesla@xxxxxxxxxx
> Date: Tuesday, May 8, 2012, 5:18 PM
> Hi Folks,
> 
> I'm trying to help my son and his friend build their first
> tesla coil as a science project.  They have done a lot
> of work, and are about ready to wire it up and test it
> out.  We have 2 questions:
> 
> 1. They are using 942 series .15uF capacitors, which they
> have soldered in series in a single string (with parallel
> bleed capacitors) to achieve the required (2x DC rated)
> voltage and capacitance recommended by Teslamap
> software.  However, we read recently that the primary
> section is high current as well as high voltage.  Their
> OBIT is rated about 240Watts (10KV, 23mA).  Will this
> string be able to discharge quickly enough? Or will we need
> parallel strings?  (These caps are not cheap.)  A
> photo:
> 
> 
> 
> 2. They have assembled a dryer duct toroid, bondo-ed and
> sanded, and applied aluminum foil tape.  It is pretty
> well done.  However, I don't have continuity from strip
> to strip of tape, or from strips to inner plates, due I
> believe to the adhesive acting as an insulator.  Is
> this a consideration at the voltages that the toroid will
> see, or will the electrons jump readily all over the
> surfact?  Is there an easy way to unify the toroid
> electrically?  Another photo:
> 
> 
> 
> Thanks very much for your help.
> 
> Jeff
> 
> 
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