Re: [TCML] How temperature effects the tesla coil...

[plasticanvil <plasticanvil@xxxxxxxxxxxxx>]

Hi Jim, I am using an aluminum "donut" for the topload. The primary coil is 
fixed to the secondary with a layer of varnish and hot glue between them. 


I don't understand what this means...

The secondary resonant frequency determined by the L of the secondary 
(fixed) and the C of the secondary (some Cself from the winding, some 
Ctop from the topload).

Can you explain? What are L and C Cself and Ctop? Keep in mind I just googled 
"Tesla for Dummies." 


Thanks :) Jonah


----- Original Message ----
From: Jim Lux <jimlux@xxxxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Sent: Fri, January 4, 2013 5:43:57 PM
Subject: Re: [TCML] How temperature effects the tesla coil...

On 1/4/13 12:25 PM, plasticanvil wrote:
> Hi Jim I'm in 8th grade. we have a small voltage meter but are unsure
> how to use it as the last one got fried by our tesla coil. We also
> have a friend with a lot of electrical equipment but i do not know
> what he has so for now we just have the small meter. Our spark gap
> cannot be changed because the tesla coil will not work unless the
> spark gap is in the exact position it is in now (small enough to
> slide a post card through). Our tesla coil is a table top version
> made with a bug zapper it's only 14" tall.


What are you using for the topload?

Can you change the primary tuning?

What might be a good experiment is to vary the size of the topload, and 
then see if the primary tuning change required matches the theory..

The secondary resonant frequency determined by the L of the secondary 
(fixed) and the C of the secondary (some Cself from the winding, some 
Ctop from the topload).


This gives you a good scientific method thing..
You can *predict* what the results of your experiment should be by using 
analysis (i.e. you have a hypothesis to test)

You can do the experiment...

You can compare the results of the experiment with the theory.

If you can find a way to measure the resonant frequency (there's a lot 
of ways to do this that are fairly simple, with improvised test 
equipment... your friend might have what's needed) that's even better.




>
> Jonah
>
>
>
> ----- Original Message ---- From: Jim Lux <jimlux@xxxxxxxxxxxxx> To:
> tesla@xxxxxxxxxx Sent: Fri, January 4, 2013 3:00:54 PM Subject: Re:
> [TCML] How temperature effects the tesla coil...
>
> On 1/4/13 11:03 AM, plasticanvil wrote:
>> Hi I'm looking to do a science project on a Tesla coil i have to
>> have a variable and i was thinking that my variable could be the
>> temperature affecting the Tesla  coil if you know anything about
>> this i would love to know.
>>
>
> Not noticeably..
>
> I would pick some design variable of the Tesla Coil... gap distance,
> tuning point, etc.
>
> Are you in middle or high school? that helps us suggest something
> with appropriate complexity.
>
> What sort of test equipment (if any) do you have access to?
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