The Tesla Coil 4-Inch Ver 1 is the earliest version of the 4 inch diameter secondary coils and is shown here in early grainy low light photographs. How things have changed! Still, a wondrous moment to see bigger sparks for the first time.
For more details and photos:
Powered by one and then 2 neon sign transformers of 12 kV 30 mA each
The sparks grew bigger with successive improvements up to about 20 inches. Having gained a lot of experience and having read widely on the internet increased my desire for more performance.
Time to move up: ‘bigger is better’. (Remember this was 2003). Head off to see the later 4 inch, 6 inch and 18 inch coils from the menu at the top of the page.
Related pages
Try something else
External links
Photo Date: 2003