I have since realised that I was describing the special case of bifilar windings.
2.
Each cell consisted of a wooden dowel with a bifilar winding of copper and zinc wires.
3.
Other techniques employ bifilar winding, or a flat thin former ( to reduce cross-section area of the coil ).
4.
"' Ayrton-Perry winding "'is a type of bifilar winding pattern used in winding wire on forms to make electronic components.
5.
The bifilar coil ( more often called the " bifilar winding " ) is used in modern electrical engineering as a means of constructing wire-wound resistors with negligible parasitic self-inductance.
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