Electric motor and method for manufacturing electric motor

A method for manufacturing an electric motor comprising:

• a rotation shaft supported by a yoke to be rotatable;
• an armature core mounted on the rotation shaft and comprising a plurality of teeth radially extending in a diameter direction and comprising a plurality of slots formed between the teeth;
• a winding wound between predetermined slots among the plurality of slots;
• and
• a commutator disposed to be adjacent to the armature core on the rotation shaft and comprising a plurality of segments to which the winding is connected,
• the method comprising:
• configuring the winding from a main winding applying a rotational force to the armature core and a brake winding applying a braking force to the armature core and building an H bridge circuit between the winding and a power supply;
• disposing the main winding and the brake winding of the winding at positions for adjusting balance when the armature core rotates;
• configuring the brake winding from at least two sets of small coils that are wound such that two teeth adjacent to each other in the armature core are positioned on an inner circumferential side;
• and
• disposing the small coils of the brake winding on the teeth over an entire circumference of the armature core.