A Switching Power Supply (SPS) is an electronic device that converts electrical power efficiently. It uses a high-frequency switching technique to regulate voltage and current, making it more compact and lightweight compared to traditional linear power supplies. SPS units are commonly found in computers, televisions, and various electronic devices. The main components of a switching power supply include a transformer, rectifier, and filter. These parts work together to convert the input voltage into a stable output voltage. Because of their efficiency, switching power supplies generate less heat and can operate over a wide range of input voltages, making them versatile for many applications.