Re: Ferrite Rod + Tesla Coils = Woah!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

Very large ferrite rods are hard to get, but you can make them from natural
ferrite mine waste ground fine ( 200 mesh -) cast with fiber glass resin.
You can experiment with TC coil size rods 1" x 3'. Have fun
  Robert  H

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Fri, 11 Jan 2002 18:10:26 -0700
> To: tesla-at-pupman-dot-com
> Subject: Ferrite Rod + Tesla Coils = Woah!
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Fri, 11 Jan 2002 21:46:41 -0700
> 
> Original poster: "Neil Richardson by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <neil-at-opticalrealities-dot-com>
> 
> The other day I built a small tesla coil in 1 hour, it is VERY badly built:
> 5 primary turns, 200~ secondary, very small. It works, very poorly, but it
> works, so thats kinda a startm enuf to help you understand one. I tuned it a
> bit, and managed to get a 5mm arc to 10mm. Someone then told me that putting
> a ferrite rod in the coil would improve its performance, after all, i'm
> using a flyback for power with a 12V 1A supply.
> 
> Guess what? I now get 1" arcs when I put my finger near to the thing! Its
> not really a tesla coil now, but its good for 1 hours work and with very
> limited materials! I salvaged every part from broken/working devices and
> boxes full of stuff I forgot to unpack 3 years ago. I would like to post
> some pics, but sadly my camera needs new batteries, ill be sure to post some
> when I get some new batteries for it.
> 
>