Here is some extra help to get a working unit.
Remember all coils are wound in the same direction, that includes b,b1. As the feed is in the center of the "b" coils, you have to realise the current flow goes out to the ends. When a coil charges and discharges the polarity changes, but be careful with the "b" coils, after all it is a capacitor plate that has an electric field and a changing magnetic field all at the same time.
Those that have built the "toroids" can give help to others.
The attached document will give some new information that those in the group should have found themselves. If you look hard at the coil schematics you will see that there are two halves, one in parallel and one in series, and a "a" coil (the output coil) which is the only coil that gives the frequency split. Your instruments can not show you these frequencies because of multi-phase interference. The LC Fr has to be calculated from your inductance and capacitance, then you will realise what you are looking at. In my case 25KHz and 15KHz on either side of the "a" coil.
Good luck gentlemen
Regards
Mike
---------------------------
"All truth passes through three stages. First, it is ridiculed, second it is violently opposed, and third, it is accepted as self-evident." Arthur Schopenhauer, Philosopher, 1788-1860
As a general rule, the most successful person in life is the person that has the best information.
|