New Jewel Thief "Resonate LCR Circuit" Much less energy draw....

[xee2]

  I hear that 20 turns primary with 200 turns secondary does much better. That 4kv trigger coil is probably the think to do:
http://www.mouser.com/Search/Refine.aspx?Keyword=4kv+trigger

Yes, 20:200 should give higher output voltage. That is the advantage of having a secondary. The secondary does not have to have two coils, the trigger coils should work also (however I have some concern over the high resistance of the coils you referenced above but I think they should work).

EDIT: drawing modified

[sirmikey1]

Hi all,
    Does anyone know what type ferrite to buy?  There's a few dozen different types.  I'm seeing type 25, 28 43, and 47 on ebay, so far.
Thanks in Advance,
MIkey 

[xee2]

Hi all,
    Does anyone know what type ferrite to buy?  There's a few dozen different types.  I'm seeing type 25, 28 43, and 47 on ebay, so far.
Thanks in Advance,
MIkey

If you are going to make a transformer for the Joule thief, you should use high permeability material.

Note that I modified the diagram to match the spec sheet for the trigger coil you referenced above. Those coils seem to be the equivalent of mini ignition coils.

[sirmikey1]

xee2,
  Are you "off the grid" yet? Thanks for all, very helpful. 
Mikey
 

[sirmikey1]

Hi all,
  Slayer just sent me this, Jeanna's youtube site.  http://www.youtube.com/user/jeannacav
Mikey