One somewhat related thought...
People have made bifilar secondaries, in which two windings are paralleled
on one form. Like two secondaries with same winding direction a _very_
short distance apart. Jeff Behary had an example on his site (dig through
http://www.electrotherapymuseum.com/creation.html he has an amazing
collection of work there and on the rest of his site, I forget the bifilar
coil area specifically). The spark behavior between the ends of the two
windings seemed interesting.
- Jason
On Sun, Apr 19, 2015 at 9:46 PM, Antonio Queiroz <acmdequeiroz@xxxxxxxxx>
wrote:
> On 18/04/2015 12:03, Doug wrote:
>
>> After reading some of the posts on here i am sure almost everything has
>> been tried with TC construction, so who has done this and what were the
>> results?
>> Two secondary's a short distance apart with the primary windings in an
>> oval loop surrounding them and one oval toroid connecting to both
>> secondary's
>
> An interesting electromagnetic problem. The two secondaries would
> influence each other magnetically with repulsion or attraction depending on
> the winding directions, decreasing or increasing the effective inductance
> of the association below or above the one half of the inductance of two
> uncoupled inductors in parallel. A better use of two secondary coils is to
> make a bipolar system, with two terminals and opposite voltages at them. An
> oval primary can be used (although two coils are simpler), with the
> secondary coils wound in opposite directions.
>
> Antonio Carlos M. de Queiroz
>
>
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