Re: Perfecting my final design...

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "coryrc" <coryrc@xxxxxxxxx>

Yeah I Have Had the Explosion thing happen before, funny thing is it shot of
the ground. Well at least it looked cool... and I wasn't hurt

;)
Happy Coilin'
Coryc
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, June 14, 2005 11:03 PM
Subject: Re: Perfecting my final design...


> Original poster: "S&JY" <youngsters@xxxxxxxxxxxxxxx>
>
> Chris,
>
> Your MO caps are likely to get very hot and explode if you use them for
> primary tank caps.  The dielectric is too lossy to be used at higher
> frequencies.  But as you suggested, they are fine for filters in DC power
> supplies and in voltage multipliers.
>
> Note the voltage rating of microwave caps is usually rated for RMS AC
> voltage.  Their DC rating would be be the same as the peak AC voltage, or
> about 1.4 times 2500 = 3500 volts for your caps.
>
> Check with Dr. Resonance for MMC caps.  I use strings of 0.1 uF 3 KV caps
I
> purchased from him, and they work really well.
> --Steve Y.
>
> ----- Original Message -----
> From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Tuesday, June 14, 2005 5:07 PM
> Subject: Re: Perfecting my final design...
>
>
>  > Original poster: "Chris Rutherford" <chris1@xxxxxxxxxxxxxxxxxxx>
>  >
>  > I can't answer your question, but I'm slowly building/designing my
first
>  > Tesla coil, unfortunately I *may* have just waited about $200 on some
>  > capacitors that may be useless.  I purchased 10 * 2500V 1.3uF microwave
>  > capacitors, they charge up nicely and produce a nice crack when
> discharged,
>  > except when thinking about their make up (liquid filled) and their 50Hz
>  > frequency rating, when I start to pulse them in the Khz range they may
>  > start to heat up due to losses etc.  Can anyone advise?  If they're no
> good
>  > as high voltage pulse capacitors would they be any good in a voltage
>  > multiplier circuit to drive a pulse capacitor? Or should I just use 4 *
> 4KV
>  > transformers with secondary in series??  Any ideas what I can do with
10 *
>  > 2500V 1.3uF 50Hz capacitors in relation to making a Tesla coil??
>  >
>  > Thanks
>  >
>  > Christopher
>  >
>  > ----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
>  > To: <tesla@xxxxxxxxxx>
>  > Sent: Tuesday, June 14, 2005 7:02 PM
>  > Subject: Re: Perfecting my final design...
>  >
>  >
>  > >Original poster: "Adam R." <arabraxas@xxxxxxxxxxx>
>  > >
>  > >
>  > >I'd like to go with a large cap but I just expanded it! I am using the
CD
>  > >caps (2000v .15uF) and have two strings of 15 for a .02uF cap bank
>  > >total...it does not look like I can easily get some more of those caps
>  > >(cheaply).
>  > >
>  > >Here are the results of the spread sheet, the inductance is much
higher
>  > >than I thought.
>  > >
>  > >Diameter of tubing 0.25
>  > >separation of turns 0.25
>  > >Number of turns per spiral 10
>  > >Radius inner turn 4
>  > >Separation of spirals 2
>  > >length     TOTAL 2.5
>  > >n            TOTAL 100
>  > >L            TOTAL 3003.5
>  > >
>  > >Also, shouldn't the two spirals be wound in opposite directions so the
>  > >magnetic field matches?
>  > >
>  > >I'm worried working with the acrylic: I don't have special bits to
drill
>  > >with it or saw it so I hope when drilling it won't crack and its only
> 1/4"
>  > >thick. To hold the copper tubing in I'm using PE cutting board strips.
> How
>  > >can I bolt the PE down? I'm guessing just extand 1/8" nylon bolts on
the
>  > >strips.
>  > >
>  > >The distances btw the two coils will be adjustable so I can experiment
>  > >differing setups.
>  > >
>  > >Even just using two layers of 5 turns (6 or even 6.5"dia center) of
.25"
>  > >Cu tubing spaced .25" apart (hopefully enough room to put 1/8" bolts?)
>  > >sounds like it'd work (with the .02uF cap). I'm just worried about
using
>  > >thin bolts (1/8") but then that'd lower the risk of fracturing the
>  > >acrylic. (However, the center holes for the secondary are 1/4")....so
>  > >should I shoot for 5 turns? I might even be able to make a crappy mock
>  > >setup and test it with my L meter.
>  > >
>  > >
>  >
>  >
>  >
>  >
>  >
>
>
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