This machine is used to teach the basic structure and working principle of AC and DC generators in junior high school physics and elementary school natural knowledge teaching. This instrument is a permanent magnet, rotatable armature generator, composed of a stator, a rotor, brushes, a base plate and a manual mechanism. This generator features high-grade materials and precision craftsmanship across all core components: the stator consists of two permanent barium ferrite magnets (red N-pole, blue S-pole) providing a stable excitation magnetic field; the rotor armature comprises a rotating shaft, coil frame, wound copper wire, and a small pulley driven by a belt connected to the manual handwheel; the brushes are made of elastic phosphor bronze strips, and by adjusting their position on the commutator/elimination It is composed of a permanent magnet and a pole whip. The magnet is made of two pieces of barium constant magnetic material. The red is the "N" pole and the blue is the "S" pole. Demonstrates how mechanical energy is converted into electrical energy while illustrating the principles of AC and DC generation.