Re: [TCML] Hello. New Coiler needs advice.

[Yurtle Turtle <yurtle_t@xxxxxxxxx>]

Welcome aboard. Greg Hunter is our bottle cap guru here, but my experience is that bottle caps don't need bleeder resistors, with a little common sense. Discharge them before touching anything. I don't recall ever seeing a residual charge on mine, though I didn't concider all failure modes at that time.

Adam

--- On Thu, 12/18/08, Ron Slack <owlman.ron@xxxxxxxxx> wrote:

> From: Ron Slack <owlman.ron@xxxxxxxxx>
> Subject: [TCML] Hello. New Coiler needs advice.
> To: tesla@xxxxxxxxxx
> Date: Thursday, December 18, 2008, 6:14 PM
> Hello All,
> 
>    I'm an EE Student looking for a unique hobby, and
> coiling seems to fit me
> perfectly.
> 
> I've been reading all I can find online for the last
> few weeks, including
> many of the posts to this list.
> I'm starting to come up with designs for my first coil
> using a 15/30 NST I
> got used from a local sign shop.
> Javatc says I need a LTR cap of 8nF for my tank. My plan is
> to use 5 wine
> bottle caps at a value of 1.55 - 1.62 nF each.
> Is there a good way to put a bleeder across caps like this?
> 
> Also, I'm a little fuzzy on the design of my spark gap.
>  playing with javatc
> for a bit, I came up with this:
> ----------------------------------------------------
> Static Spark Gap Inputs:
> ----------------------------------------------------
> 8 = Number of Electrodes
> 1 [inch] = Electrode Diameter
> 0.28 [inch] = Total Gap Spacing
> 
> ----------------------------------------------------
> Static Spark Gap Outputs:
> ----------------------------------------------------
> 0.04 [inch] = Gap Spacing Between Each Electrode
> 21213 [peak volts] = Charging Voltage
> 20390 [peak volts] = Arc Voltage
> 34333 [volts] = Voltage Gradient at Electrode
> 72822 [volts/inch] = Arc Voltage per unit
> 96.1 [%] = Percent Cp Charged When Gap Fires
> 10.312 [ms] = Time To Arc Voltage
> 97 [BPS] = Breaks Per Second
> 1.66 [joules] = Effective Cap Energy
> 0 [peak volts] = Terminal Voltage
> 161 [power] = Energy Across Gap
> 31.9 [inch] = Static Gap Spark Length (using energy
> equation)
> 
> 
> is it a good idea to have my arc voltage this close to
> Vpeak or should I
> close the gap a bit more?
> I figure if I set my safty gap just a little higher than
> .28"/2 for each
> side to ground I should be good.
> 
> 
> for my primary I plan to use
> 
> Primary Coil Inputs:
> ----------------------------------------------------
> 7.5 = Radius 1
> 13.5 = Radius 2
> 0 = Height 1
> 0 = Height 2
> 12.5 = Turns
> 0.25 = Wire Diameter
> 0.008 = Primary Cap (uF)
> 
> with a 6" by 30" secondary winding, altough I
> have yet to get some magnet
> wire.
> 
> 
> Thanks,
> Ron
> _______________________________________________
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> Tesla@xxxxxxxxxxxxxx
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