Sound producing unit, sound producing module, and electronic terminal

A sound generating unit, comprising a magnetic circuit system, a vibration system, and a circuit board, wherein the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit portion and a side magnetic circuit portion each arranged on the magnetic yoke;

• wherein at least one of the central magnetic circuit portion and the side magnetic circuit portion comprises a permanent magnet, and the central magnetic circuit portion and the side magnetic circuit portion form a magnetic gap therebetween;
• wherein the vibration system comprises a diaphragm and a voice coil connected with a first end thereof to the diaphragm and extending with a second end thereof into the magnetic gap of the magnetic circuit system;
• wherein, the voice coil includes two voice coil wires wound together, and each voice coil wire having a wire-in end and a wire-out end;
• each of the wire-in ends having a lead-out position and arranged diagonally at two sides of the voice coil, and each of the wire-out ends having a lead-out positions located and arranged diagonally at the two sides of the voice coil;
• the wire-in ends and the wire-out ends being respectively electrically connected to corresponding pads of the circuit board, and the circuit board having an internal circuit configured to electrically connect the wire-in ends together and to electrically connect the wire-out ends together.