Latest Progress on my Resonant Cell

Started by unknown · 11 November 2011 · 5 posts

1. Aurgus

   #1 · date not recorded

   Well, back to mad science after a year long break. Can’t say I’ve made any progress.
   The new Coil pack matches the winding specs. I switched back to ferrite for the core,
   using 0.5” ferrite rods.
   
   Added the Diode across the Primary coil. Now it acts like a true step up transformer
   instead of a flyback.
   
   Tuning around with frequency and gating generates an occasional tiny tiny trickle of
   bubbles and some interesting noises, but not the generous results everyone hopes for.
   
   With the Diode in place the current draw is apox 300 ma.
   I have noticed the primary coil is getting hot. Will dig though my stash and add the resistor
   Across the primary.
   
   The only thing left I can think of at the moment is to fabricate thin flat ferrite cores aka Meyer.
   

   attachment_10021 attachment_10023 attachment_10025 New Coil Pack.JPG New Cell2.JPG Primary Coil Diode.JPG

2. Dave

   #2 · date not recorded

   Looks like you have a nice set up
   I'm also looking for a flat core.

3. Aurgus

   #3 · date not recorded

   Thanks Dave.
   
   It looks a little rickety but I have tried so many variations on coils and core that at this point I'm just trying to get some results. At least my pulsing unit is stable and accurate.
   
   I have a friend who has access to a water jet CNC, but  I have not been able to locate flat ferrite. I have heard of custom cores home made by pouring copy toner and epoxy mix into a mold. Not ready to go there yet.
   
   I knew when I started this project it would come down to the magnetics.
   

4. Dave

   #4 · 11 Nov 2011

   Same here, it soon become apparent after receiving the specs that the core Stan was using would be the hardest thing to get my hands on. I also have been looking for something along the lines of a ferrite sheet to have cores cut out of, but I haven't really found any. I purchased flat ferrite strips that I am planning on putting together in a U shape like you have done with the rods. Thats the best I can do for now.
   
   What kind of diode are you using in between secondary and positive choke?
   Have you been able to achieve the same inductance and resistance values as Stan's original vic with your setup?

5. Aurgus

   #5 · 11 Nov 2011

   MUR8100
   8 amps 1000v
   
   
   
   My coils are 600 Primary, 3000 secondary and chokes. Don't have an inductance meter.
   
   If you don't mind, can you PM me on the source of your ferrite? I have a plan to mount them if I can find some.
   Those bobbins were for a laminate steel setup. I have some better ones on order.