Specialized category for AC power supply equipment used in manufacturing laboratories and inspection facilities. Provides stable AC power required for electronic device operation testing, component durability inspection, and control system operation verification. Handles AC power supplies with variable voltage and frequency functions, single-phase and three-phase AC power equipment, and high-precision experimental AC power sources capable of voltage and current control. Used for electronic component inspection in manufacturing processes, quality control testing, and electrical characteristic evaluation in research and development, clearly distinguished from DC power supplies and signal generators as AC-dedicated power equipment.