Devices that use alternating current (AC) to operate are typically those that are connected directly to the power grid. Some common examples include:
Household Appliances: Refrigerators, washing machines, air conditioners, microwaves, and ovens.
Lighting: Incandescent bulbs, fluorescent lamps, and LED lights designed for AC operation.
HVAC Systems: Heating, ventilation, and air conditioning systems.
Large Industrial Machines: Motors, compressors, and factory machinery.
Television Sets and Audio Systems: Modern TVs and sound systems that plug into wall outlets.
Computers and Laptops: While they internally operate on DC, they use an AC adapter to convert AC from the outlet to DC.
These devices are designed to handle the typical voltage and frequency of AC power supplied in households and industries, which is usually around 120V/60Hz in North America or 230V/50Hz in many other parts of the world.