Hinge for connecting a leaf to a frame so as to be hinged about a hinge axis

A hinge plate for connecting a leaf of a door or a sash of a window or the like to a frame so as to be hinged about a hinge axis, the hinge plate comprising:

• a frame hinge plate part comprising a frame fastening part and a frame hinge part, the frame hinge plate part being configured to be fastened to the frame;
• a leaf or sash hinge plate part comprising a leaf or sash fastening part and a leaf or sash hinge part, the leaf or sash hinge plate part being configured to be fastened to the leaf or to the sash;
• a primary coil disposed in the frame hinge part and a secondary coil disposed in the leaf or sash hinge part, the primary coil and the secondary coil each being configured to surround a hinge plate pin defining the hinge axis, the primary coil extending at least almost up to an end face of the frame hinge part facing the leaf or sash hinge part, and the secondary coil extending at least almost up to an end face of the leaf or sash hinge part facing the frame hinge part;
• and
• a hinge plate pin sleeve comprising a ferrite material, the hinge plate pin sleeve being disposed between the hinge plate pin and the primary coil and the secondary coil, the hinge plate pin sleeve extending approximately over a length of the hinge plate pin surrounded by the primary coil and the secondary coil.