Finally starting on my coil...

Status
Not open for further replies.
Usernametaken said:
Thanks for all the help
JavaTC suggests a primary inductance of 13.953uH so I'll look at 6 of them.
Click to expand...
Keep in mind the 13.953uH will change based on capacitor tolerance, leadout length, etc. This is the value that is "tuned" when you tune a Tesla coil. JavaTC has an "Auto-tune" tool, and this is exactly what it adjusts.
 
A couple of quick questions whilst I finalise my JavaTC simulation:
How far from the secondary coil do I want the first turn of the primary and what do I do in relation to coupling (I take it this is how far above/below the plane of the primary that the first wind of the secondary is placed)?
 
1. For a coil the size of yours I would recommend at least half an inch between the first turn of the secondary and the innermost turn of the primary coil
2. The coupling coefficient is directly related to the positioning of the secondary coil within the primary. Generally you should shoot for between 0.1 and 0.2. 0.13 is usually recommended as the target. JavaTC also has a tool to automatically adjust the coupling too, along with auto-tune. I recommend using it.
 

Found these as well.
https://www.aliexpress.com/item/Tes...656576e&transAbTest=ae803_1&priceBeautifyAB=0
 
Usernametaken said:
**broken link removed**
Click to expand...
Excellent! I'd go for four in series to give you a 12000VAC rating. That will give you a capacitance of only 110nF though, so if you have the money to spare you might consider putting two of these strings in parallel (8 caps total, ~$160). Heck, I'm even tempted, though they don't ship to the US. That's actually a pretty decent deal for that type of capacitor. I do see the ESR is around 2 ohms. That seems a little high, so keep an eye on their temperature. They'll be dissipating a lot of power.
 
The ones I linked to are actually 6000VDC.
I've ordered 2 of them for 12000VDC and 0.22uF which would be ideal.
Be interesting to see if/how they work and if they stand up to the coil.
Happy to get them delivered here and then forward them on to you if they don't ship to the US.
 
Look at the datasheet. 6000VDC, 3000VAC each. You need to go by the AC rating when using them in Tesla coils. The AC rating is generally around half of the DC rating.
 
Status
Not open for further replies.

Similar threads

S
  • Question
my champion 3 phase shop air compressor wont power on after P.G.&E turned off power
Replies
4
Views
3K
shortbus=
S
  • Question
Power supply for tesla coil
Replies
16
Views
11K
Tony Stewart
C
  • Question
Need HELP driving my IGBT (Toshiba MG300Q1US)
Replies
2
Views
3K
Tony Stewart
Little Tesla coil vid
Replies
5
Views
9K
billybob
Mot Tesla coil not working
Replies
13
Views
15K
billybob
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…