This product is a threephase AC power generator designed for windpower generation and hydraulic hand friction power generation, and it also serves as a teaching aid and textbook model for threephase AC power generation in schools. Benefits and practical value Handson learning: Provides a practical way to study threephase AC power generation and renewable energy concepts in classrooms, labs, or hobbyist setups. Versatile energy sources: Suitable for demonstrations powered by wind input or hydraulic hand friction input, enabling multiple teaching configurations. Educational focus: Helps students understand energy conversion, electrical generation, and threephase power systems with a real, working model. DC output for charging small batteries: Mainly intended for charging small batteries, but the AC output must be converted to DC using rectification and filtering to charge the batteries. Maintenancefriendly: If motor noise increases, motor gears can be lubricated with gear oil to maintain smooth operation. Key attributes Function: Threephase AC power generation for educational demonstrations and renewableenergy concepts. Compatibility: Works with windpower generation and hydraulic hand friction power generation; designed as a teaching aid and textbook model for schools. Output considerations: To charge small batteries, the generator's AC output must be rectified and filtered to DC power. Maintenance guidance: If noise levels rise, apply gear lubricating oil to the motor gears to restore quiet operation. Electrical and operating notes For charging small batteries, you must convert the AC output to DC power through a rectifier and filter circuit before charging. The unit is intended to illustrate AC power generation and energy conversion, not provide direct DC charging without appropriate conditioning. 23 practical use scenarios Classroom lab demonstration: Drive the generator with a small wind setup or a handcrank mechanism to demonstrate threephase AC generation, while students measure voltages, currents, and phase relationships. Renewableenergy teaching module: Use the device to show how mechanical energy from wind or manual input becomes electrical energy, then explain the need for rectification and filtering when delivering DC to small batteries. Student project and experimentation: Incorporate a rectifier and filter circuit to charge small batteries, analyzing efficiency and losses in the conversion from mechanical energy to electrical energy and then to stored chemical energy. Maintenance guidance If motor noise increases during operation, apply gear lubricating oil to the motor gears to restore smooth performance. This description preserves the original product's purpose and functions while presenting clear, customerfriendly information about benefits, usage, and maintenance.