Re: [TCML] Q

["DC Cox" <resonance@xxxxxxxxxxxx>]

Antonio:

What is the part number for the transistor you used with the 555 circuit?
Is this a pair of transistors or a single xsistor in a Darlington
configuration?

Dr. Resonance




On Fri, May 30, 2008 at 6:47 AM, Antonio Carlos M. de Queiroz <
acmdq@xxxxxxxxxx> wrote:

> bartb wrote:
>
>>
>> I tried using the existing objects to accomplish this but I was never
>> satisfied with the results. For example, half a streamer on both sides of a
>> toroid is "not' linear to a single streamer on one side. Once I realized
>> this, I knew I needed Paul Nicholson. I wrote an email to Paul for the
>> implementation of this into Geotc, but at the time he wasn't getting my
>> emails (lost in cyberspace I think). Paul also hates JavaScript more than I
>> do (no, I don't think so!), so likely this can't be done unless I can figure
>> a method to use existing objects. I have only at my disposal toroids,
>> spheres, cylinders, and discs. All of these I can configure into a "rod"
>> shape, however, they all implement out on both sides from the center of the
>> coil and that is my problem. I couldn't find my happy spot and eventually
>> got busy with other things never to resolve this situation. I still long to
>> do it.
>>
>> The only element that can be configured as a rod is a vertical thin
> cylinder. What looks as rods to both sides is actually a disk. A true 3D
> simulator can be written, but it would take much longer to do the
> calculations.
> I would never try to tune a coil by adjusting separately the resonance
> frequencies of both coils. What I do is to apply a low-impedance (<1 Ohm)
> low-frequency (1 kHz) square wave across the spark gap and observe the
> transients across the primary coil in an oscilloscope at the transitions. I
> then adjust the system to obtain complete notches, what indicates that
> complete energy transfer is occurring. This method gives complete
> information about what is happening with the whole system.
> http://www.coe.ufrj.br/~acmq/tesla/tuner.gif
> http://www.coe.ufrj.br/~acmq/tesla/mid_comp.jpg (simulation x
> oscilloscope)
>
> Antonio Carlos M. de Queiroz
>
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