A switching power supply is an electrical device that converts electrical power efficiently. Unlike traditional linear power supplies, which dissipate excess voltage as heat, switching power supplies use high-frequency switching techniques to regulate output voltage. This makes them smaller, lighter, and more efficient, often achieving over 90% efficiency. These power supplies are commonly used in various applications, including computers, televisions, and mobile chargers. They can handle a wide range of input voltages and provide stable output, making them versatile for different electronic devices. Their design allows for better thermal management and reduced energy consumption.