Abstract: Some embodiments are directed to a coil for a stator of an electrical slotless motor), the electrical slotless motor including a rotor including at least one magnet (10), the coil including a cylindrical portion (80c) arranged to face the at least one marget, wherein a radial thickness of the cylindrical portion is greater than 28%, preferably 30% of an internal radius of the cylindrical portion.

Abstract: Encoder including a moveable part with at least one magnetic dipole, at least one Hall Effect sensor with a sensitive area arranged to detect a magnetic field created by the magnetic dipole, at least one circuit board with a main thickness and having an attachment portion on which the Hall Effect sensor is mounted, where the Hall Effect sensor is a semiconductor die sensor with the sensitive area arranged on an external face of the semiconductor die, where the Hall Effect sensor is flip chip mounted onto the attachment portion of the circuit board, with the sensitive area in contact with the circuit board, and where the attachment portion is arranged between the Hall Effect sensor and the magnetic dipole and presents a reduced thickness compared to the main thickness of the rest of the circuit board.

Abstract: An axial self-supported coil for a slotless rotating electric motor. The axial self-supported coil includes one coil body formed by winded electrical conductors, with a head at each end, the electrical conductors in the coil body being substantially coplanar with the motor rotation axis, each coil head having an axial thickness, the axial self-supported coil having a conductor filling factor, characterized in that at least one of the electrical conductors is a multi-stranded conductor, in that a deformation arrangement of the multi-stranded conductor increases the conductor filling factor and in that a bending arrangement of the multi-stranded conductor reduces the axial thickness of each coil head.

Abstract: Encoder including a moveable part with at least one magnetic dipole, at least one Hall Effect sensor with a sensitive area arranged to detect a magnetic field created by the magnetic dipole, at least one circuit board with a main thickness and having an attachment portion on which the Hall Effect sensor is mounted, where the Hall Effect sensor is a semiconductor die sensor with the sensitive area arranged on an external face of the semiconductor die, where the Hall Effect sensor is flip chip mounted onto the attachment portion of the circuit board, with the sensitive area in contact with the circuit board, and where the attachment portion is arranged between the Hall Effect sensor and the magnetic dipole and presents a reduced thickness compared to the main thickness of the rest of the circuit board.

Abstract: An axial self-supported coil for a slotless rotating electric motor. The axial self-supported coil includes one coil body formed by winded electrical conductors, with a head at each end, the electrical conductors in the coil body being substantially coplanar with the motor rotation axis, each coil head having an axial thickness, the axial self-supported coil having a conductor filling factor, characterized in that at least one of the electrical conductors is a multi-stranded conductor, in that a deformation arrangement of the multi-stranded conductor increases the conductor filling factor and in that a bending arrangement of the multi-stranded conductor reduces the axial thickness of each coil head.