SGTC Maths
Munkey, Mon May 07 2007, 01:35PMHi
Before anyone asks I am NOT looking for step by step plans.
I have been looking up the maths of how to make a calculated SGTC, but I got stuck,
I have looked on the DeepFriedNeon site for the equations but there are a lot of unknowns and I cannot see how I can work it out.
Anyway my main question is can I wind a secondary of about 800 to 1000 turns and above and then work out the primary windings and the capacitor value. I assume the spark gap is a bit if guesswork.
Thanks.
Re: SGTC Maths
Finn Hammer, Mon May 07 2007, 02:07PM
This site is one of the best when it comes to describing the Tesla Coil.
Cheers, Finn Hammer
Finn Hammer, Mon May 07 2007, 02:07PM
This site is one of the best when it comes to describing the Tesla Coil.
Cheers, Finn Hammer
Re: SGTC Maths
uzzors2k, Mon May 07 2007, 02:32PM
You must have missed this.
uzzors2k, Mon May 07 2007, 02:32PM
You must have missed this.
Re: SGTC Maths
Munkey, Mon May 07 2007, 03:43PM
Yes, I have red both of those sites.
But I only have one set value and it does not seem possible to work out the capacitor value, primary inductance and secondary inductance. Is is possible?
BTW I am really really bad at maths
Munkey, Mon May 07 2007, 03:43PM
Yes, I have red both of those sites.
But I only have one set value and it does not seem possible to work out the capacitor value, primary inductance and secondary inductance. Is is possible?
BTW I am really really bad at maths
Re: SGTC Maths
Steve Conner, Mon May 07 2007, 04:44PM
You aren't as bad at maths as you think: you just don't have enough information to solve the problem. In math jargon, it's underdetermined, IIRC. Your mistake was to only set one value, when you actually have to make some more assumptions.
In practice, that is usually done by winding the secondary first (with around 1000 turns like you said) on whatever diameter of former you can get, making a topload out of whatever you can get your hands on, and then measuring to see what resonant frequency you ended up with. You can now calculate all the other parts that will match it.
Steve Conner, Mon May 07 2007, 04:44PM
You aren't as bad at maths as you think: you just don't have enough information to solve the problem. In math jargon, it's underdetermined, IIRC. Your mistake was to only set one value, when you actually have to make some more assumptions.
In practice, that is usually done by winding the secondary first (with around 1000 turns like you said) on whatever diameter of former you can get, making a topload out of whatever you can get your hands on, and then measuring to see what resonant frequency you ended up with. You can now calculate all the other parts that will match it.
Re: SGTC Maths
Finn Hammer, Mon May 07 2007, 05:16PM
I may have misunderstood you, perhaps you really want to calculate the coil step by step.
If not, try to download this program, it will make things much easier for you. I use it all the time.
There are more accurate programs like this:
But somehow, I always end up using Wintesla. To each his own.
Cheers, Finn Hammer
Finn Hammer, Mon May 07 2007, 05:16PM
Bacon wrote ...
BTW I am really really bad at maths
Bacon,BTW I am really really bad at maths
I may have misunderstood you, perhaps you really want to calculate the coil step by step.
If not, try to download this program, it will make things much easier for you. I use it all the time.
There are more accurate programs like this:
But somehow, I always end up using Wintesla. To each his own.
Cheers, Finn Hammer
Re: SGTC Maths
Munkey, Mon May 07 2007, 06:44PM
Steve, Yehh thats the answer I was looking for! Im not sure how to find the resonant frequency... (great TCs you have got!)
Finn,
Me and calculators get along very well! Hot-streamer I think is down for now, Ill check later.
Munkey, Mon May 07 2007, 06:44PM
Steve, Yehh thats the answer I was looking for! Im not sure how to find the resonant frequency... (great TCs you have got!)
Finn,
Me and calculators get along very well! Hot-streamer I think is down for now, Ill check later.
Re: SGTC Maths
HV Enthusiast, Mon May 07 2007, 09:56PM
You can always check out this paper which shows how to use readily available freeware Tesla cad programs to design the components of your coil . . .
http://www.easternvoltageresearch.com/designfiles/paper_howto.pdf
HV Enthusiast, Mon May 07 2007, 09:56PM
You can always check out this paper which shows how to use readily available freeware Tesla cad programs to design the components of your coil . . .
http://www.easternvoltageresearch.com/designfiles/paper_howto.pdf
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