Abstract: Provided is a linear motor capable of simplifying assembling of a coil unit and stabilizing a coil pitch and the overall length of the coil unit. The linear motor has a rod 1 having magnets 3, a plurality of coils 4 arranged in the axial direction of the rod 1, a housing 2 covering the coils 4, and a coil holder 5 holding the coils 4 in the housing 2. The coil holder 5 includes a holder main body 5a elongating in the coil arrangement direction and a plurality of spacer portions 5b made of resin and each interposed between each adjacent two of the coils 4 to insulate the coils 4 from each other, the spacer portions 5b being formed integrally with the holder main body 5a.

Abstract: Provided is a linear motor capable of simplifying assembling of a coil unit and stabilizing a coil pitch and the overall length of the coil unit. The linear motor has a rod 1 having magnets 3, a plurality of coils 4 arranged in the axial direction of the rod 1, a housing 2 covering the coils 4, and a coil holder 5 holding the coils 4 in the housing 2. The coil holder 5 includes a holder main body 5a elongating in the coil arrangement direction and a plurality of spacer portions 5b made of resin and each interposed between each adjacent two of the coils 4 to insulate the coils 4 from each other, the spacer portions 5b being formed integrally with the holder main body 5a.

Abstract: AC input voltage is lowered at a transformer, rectified at a rectifying circuit, then smoothed at a smoothing circuit, and thus produced DC voltage is supplied to an inverter which drives a motor. The rectified DC voltage is provided to a DC/DC converter to generate power supply for a magnetic bearing, and DC power supply for controlling the magnetic bearing is generated at a DC/DC converter. During the power failure regenerative electric power from motor is provided to DC/DC converter to produce power voltage for the magnetic bearing, and DC voltage for controlling the magnetic bearing is provided from DC/DC converter.