Coil and method for producing a coil

A coil comprising:

• at least four separate electrical conductors that are connected in parallel, wherein the electrical conductors each comprise individual wires which are twisted together and intermeshed,
• wherein the at least four separate electrical conductors are connected to one another at least at the ends of the coil;
• wherein the electrical conductors are mechanically bonded to one another locally at multiple points, wherein the multiple points comprise points that are not just the ends of the electrical conductors, wherein, at the multiple points, the mechanical bonding of the electrical conductors comprises a thermoplastic synthetic material, a UV-hardened adhesive, or a synthetic yarn, wherein the mechanical bonding extends only over the electrical conductors along a radial plane of the coil;
• wherein the electrical conductors are wound around a common winding center,
• wherein the electrical conductors are arranged aligned on top of one another so that a line crossing a center of each electrical conductor is perpendicular to a line through the common winding center;
• wherein, for each of the at least four electrical conductors, windings are formed such that the conductor is at a constant distance from the winding center of the coil over an entire length of the coil, the constant distance being different for each conductor,
• wherein the windings of the electrical conductors are arranged adjacent to one another over the entire length of the coil such that the windings of each electrical conductor are arranged next to the windings of an adjacent electrical conductor, and
• wherein the coil is inherently mechanically stable.

A coil comprising a plurality of electrical conductors, the coil comprising:

• a first conductor wound around a winding center such that windings of the first conductor extend laterally over an entire length of the coil, wherein each winding of the first conductor is at a first constant distance from the winding center of the coil over the entire length of the coil;
• a second conductor wound around the winding center over the first conductor such that windings of the second conductor extend laterally over the entire length of the coil, wherein each winding of the second conductor is at a second constant distance from the winding center over the entire length of the coil, the second constant distance larger than the first constant distance, the second conductor being electrically coupled in parallel with the first conductor;
• a third conductor wound around the winding center over the second conductor such that windings of the third conductor extend laterally over the entire length of the coil, wherein each winding of the third conductor is at a third constant distance from the winding center over the entire length of the coil, the third constant distance larger than the second constant distance, the third conductor being electrically coupled in parallel with the first and second conductors;
• and
• a fourth conductor wound around the winding center over the third conductor such that windings of the fourth conductor extend laterally over the entire length of the coil, wherein each winding of the fourth conductor is at a fourth constant distance from the winding center over the entire length of the coil, the fourth constant distance larger than the third constant distance, the fourth conductor being electrically coupled in parallel with the first, second and third conductors, wherein the first, second, third and fourth conductors are arranged aligned on top of one another so that a line crossing a center of each conductor is perpendicular to a line through the winding center, wherein the first, the second, the third, and the fourth conductors are connected to one another at least at the ends of the coil, and wherein the first, the second, the third, and the fourth conductors are mechanically bonded to one another locally, with mechanical bonding, only at multiple points along the length of the electrical conductors, wherein the first, the second, the third, and the fourth conductors are electrically insulated with respect to one another at the multiple points with the mechanical bonding, wherein, at the multiple points, the mechanical bonding of the electrical conductors comprises a thermoplastic synthetic material, a UV-hardened adhesive, or a synthetic yarn, wherein the mechanical bonding extends only over the electrical conductors along a radial plane of the coil.