i spent a lot of time reading through the information on this website and decided to do this opposing-coil-thing on my tank circuits.
first i want to show you the circuit that i am working on.
i made a drawing that you can see what is going on there..
the first apparatus looks like this..
it works brillant and i can get a lot of these LED's working with less input from DC source.
then i found this forum and i am still trying to understand deeper what you have on the table. so i tried a new coil based on the information i understand.
this is how the coil looks like...
i made the L1 on the outside and L2/L3 are on the inside.
the circuit that i build is this one..
the results are good - i will get professional measurement equipment in a few weeks to get an idea on how much energy i can get out of this thing.
at the moment i have 1,2kV on L1 at resonance condition.
thank you for your hard work!
some more pictures..