Rodin Coil Nomenclature Proposal

Proposal for a Nomenclature System for the Rodin Coil Nomenclature

Dewayne J. Broussard

A consistent nomenclature system provides a easy method to communicate the design specification of the coil in order for testing results to be duplicated and verified.

The Rodin coils has these inherent properties: • Toroidal in shape • Trifilar wound with one circuit being a null (no wire). The term bifilar wound is typically used with the third null circuit as being understood. • The circuit are wound in parallel in a spiral pattern. • The physical phase difference due to the winding is typically zero. Concept does not indicate start nor stop point of the circuits.

Circuit 1 Circuit 2 Null Circuit

Beginning and End of the circuits

Conceptual Coil as presented by Marko Rodin.

Proposal for a Nomenclature System for the Rodin Coil General Coil Nomenclature

Any torus having a circular cross section and revolved around a single axis may be described by its outer and inner diameters D and d respectively.

Ød

The torus is divided into sections. In the case of the drawing above it is divided into 12 sections. The pitch is 5 as shown below.

ØD

A proposed nomenclature is: {ØD}-{Ød}:{sections}p{pitch}

Winding of Torus shown above

An example would be: 100-75:12p5

0 11

1

indicating a 100mm (4 inch) outer diameter, a 75mm (3 inch) inner diameter and a pitch of 5 wound around 12 sections.

2

10 9

Pitch of 5 3

4

8 7

6

5

Additional qualifiers can be added to describe new attributes such as: • torus shapes other than circle. Current construction is actually an tear drop shape. • nested structures • twin axis i.e. elliptical • wire size (i.e. 24AWG, etc..)

Non-circular toroid

Nested torus

Bi-axial toroid