Feature: 1. MAIN PURPOSE: This instrument is used by schools to scientifically demonstrate the working principle of generator, demonstrating that mechanical energy can be converted into electrical energy. 2. WORKING PRINCIPLE: The armature rotor is rotated in a permanent magnetic field to generate current. When the hand wheel rotates to drive the armature rotor, the current is generated in the coil to make the LED light. 3. COMPOSITION PARTS: The instrument is composed of base, armature, pole shoe, magnetic field, brush, hand wheel, and load plate, etc., with a compact structure, easy connection and operation. 4. STURDY MATERIALS: The hand crank generator is made of excellent PVC and other materials, which has good toughness, high strength, large resistance, ensuring a longer service life. 5. APPLICABLE SCENES: This hand generator is suitable for physics teaching in middle and high schools, electronic experiments, etc., provides a clear and intuitive demonstration process. Specification: Item Type: Hand Crank Generator Material: PVC Use: This instrument is used for school scientific demonstration of the working principle of the generator, indicating that the mechanical energy can be converted into electric energy. Construction: The generator uses an armature rotor to rotate in a permanent magnetic field to generate current. The instrument is composed of base, armature, pole shoe, magnetic field, brush, hand wheel and load plate. The two ends of the armature coil are respectively connected to 2 copper rings, copper ring type flow collection and reversing linkage device. When the hand wheel rotates to turn the armature rotor, a current is generated in the coil to make the LED light.. Package List: 1 x Hand Crank Generator