Joule Thief

[ПВА]

Ð"обрый день всем!Меня инÑ,ересуеÑ, Ториодальный Ñ,рансÑ,,ормаÑ,ор с радиальной намоÑ,кой.Какие у него ПракÑ,ические парамеÑ,ры,по мощносÑ,и ,и поÑ,ери.

[gyulasun]

His Russian text

Ð"обрый день всем!Меня инÑ,ересуеÑ, Ториодальный Ñ,рансÑ,,ормаÑ,ор с радиальной намоÑ,кой.Какие у него ПракÑ,ические парамеÑ,ры,по мощносÑ,и ,и поÑ,ери.

in English is

Good afternoon all! I am interested in toroidal transformer with radial winding. What are the practical parameters on power and losses.

I used this link for translation: http://translation2.paralink.com/Russian-English-Translation/  It works both direction. 

rgds, Gyula

[xee2]

@ crowclaw

( see 827 1204)

What is this? How much improvement did you see with second diode?

Nice drawing. I like the lightning bolt.

[xee2]

@ gyulasun

Power limited by ferrite saturation. Search for "ferrite saturation" on Russian sites. There should be something there.

[sirmikey1]

xee3,
  That's the page and post number where he posted scopeshots.  Sitting here, it looks like splitting or feeding the output back to L1 neg would cause spikes, like an ignition coil?   Pardon my green, but....
Mikey