Pulse electromagnetic DC motors, in their simplest form, consist of electromagnet with armature and ratchet wheel mounted on shaft. The right end of armature carries pawl.
脉冲直流电机的最简单结构形式是由固定在架子上的线圈和棘轮组成，线圈的右端装有棘爪。
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The disk type brake comprises a brake strip, a brake disk, a brake armature, a brake spring and a magnetic yoke assembly which are all installed on the inner part of the outer end of the motor.