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Messages - benet

Pages: [1]
1
Beginners / Re: is resistance calculated by the output or input?
« on: May 22, 2021, 01:19:37 AM »
Like I said above I'm trying to find the impedance of a circuit which requires me to know the resistance of the circuit. But my problem is I don't know whether that means the output or input resistance. 

2
Beginners / is resistance calculated by the output or input?
« on: May 21, 2021, 01:17:50 AM »
When trying to find the resistance of a Tesla coil circuit using ohms law should you be measuring by the input volts in amps or the output volts in amps?  I am trying to calculate the impedance of a circuit and to do that I need to know the resistance. But none of the sources I found specify whether it's going off of the input or the output, which is important to clarify when working with a circuit like a Tesla coil which changes the amps to Volt ratio using Transformers.

3
Beginners / Re: Secondary Resonant Circuit Size
« on: May 15, 2021, 01:50:52 AM »
Thank you for your response. I am still a bit confused about two things.

 First what you mean by “After a number of cycles, all of this energy will be transferred to the secondary tank.” The way that I currently understand resonant circuits, the capacitor is entirely discharged within one cycle and then recharged at the beginning of the next. Is there a different cycle that you're referring to then the resident frequency?

2nd how is the energy returning from the secondary tank back to the primary tank. I know that the energy can go from the secondary tank to the secondary coil via the ground. But how is the energy traveling backwards into the previous capacity?

4
Beginners / Re: transformer question
« on: May 13, 2021, 01:03:08 AM »
I'm still a bit confused why use the transformer to change the impedance instead of just changing the size of the secondary coil So that it has the same impedance size the power main? 

5
Beginners / Re: Secondary Resonant Circuit Size
« on: May 13, 2021, 12:03:59 AM »
Is that a spark gap TC you want to build or a DRSSTC or SSTC? The design choices differ somewhat for each type. Wrt to coupling: Usually more is better. It's an engineering challenge to avoid racing sparks or flashovers that often accompany large coupling values. Davekni e.g. has mapped out some extremes: https://highvoltageforum.net/index.php?topic=1268.msg9305#msg9305
But that requires a lot of work and knowhow.
I'm just starting out so I'm making a mini spark gap Tesla coil

6
Beginners / Re: Secondary Resonant Circuit Size
« on: May 12, 2021, 07:21:35 AM »
Your website is very helpful and the material the charts we're on are exactly what I'm looking for. But despite that I couldn't actually find what calculations you used to come to your conclusions. at least four the optimal coupling ratio of the primary and secondary coils, as well as the recommended resident frequency. If you could either link to those equations or point out if I missed it on the original website that would be greatly appreciated. thank you.

7
Beginners / correct coupling calculation?
« on: May 12, 2021, 12:39:01 AM »
How do you calculate the correct coupling Between the primary and secondary coils for a solid state tesla coil?

8
Beginners / Re: transformer question
« on: May 11, 2021, 11:49:31 PM »
Sorry I should have been more specific I'm talking about the spark length of a Tesla coil. Does the same hold true in that case?

9
Beginners / transformer question
« on: May 11, 2021, 02:13:22 AM »
I've heard around a lot that spark length he's based off of wattage. But if that is true Why does it matter what transformer is used? Because a transformer just changes the voltage to amperage ratio it never actually changes the wattage. I feel like I'm missing something pretty major here.

10
Beginners / Secondary Resonant Circuit Size
« on: April 13, 2021, 11:52:24 PM »
I'm trying to build a mini Tesla coil, but I have run into a problem in the design phase. Throughout anywhere I looked I haven't been able to find the proper size for the secondary resonant circuit. I understand that it needs to have the same resonant frequency as the primary resonant circuit but that only has bearing on the ratio between the capacitor and inductor. The only lead so to speak that I have is that the secondary in primary coils work as a transformer but again nothing I've found says to what degree. I have to imagine that there is a point where the secondary coil is too big to work with the rest of the circuit, but I have not been able to figure out what that size is. This seems like a relatively basic question but for the life of me I have not been able to figure it out. So is anyone else knows what I'm missing here that would be greatly appreciated, as this is the last thing I need to finish my design. Thank you.

11
Beginners / how do i calculate inductance
« on: August 25, 2020, 12:23:15 AM »
Hi i am an aspiring engineer trying to learn on my own. Although while researching i have not been abel to find an equation to calculate inductance of a coil as well as a spiral. dose anyone hear know of such a calculation or a good resource where i could find one. Thank you.

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