Multifunctional electromagnetic brake

An electromagnetic brake comprises: main parts of an electromagnetic brake, including a stator yoke, a plurality of magnetic coils, and a steel rotor, wherein the magnetic coils form three-phase connections; a driving device used for a high rotating speed area and comprising transistors turned on and off by drive pulse used for the high rotating speed area and emitted from a control device; and a driving device used for a low rotating speed area, comprising a battery, a diode used for preventing reverse current, and transistors which are turned on and off by drive pulse used for the low rotating speed area and emitted from the control device. The magnetic coils of each phase are connected with a capacitor for forming a resonance circuit. Each transistor for the high rotating speed area is connected to each multi-phase connection in series. Each transistor for the low rotating speed area is connected to each multi-phase connection through the battery and the diode in series. The electromagnetic brake is characterized in that the magnetic coils are excited by power obtained from brake energy at the high rotating speed area and excited by the power obtained from the battery at the low rotating speed area.