A switching power supply is an electronic device that converts electrical power efficiently. It takes an input voltage and transforms it into a different output voltage, which can be higher or lower, depending on the needs of the connected device. This type of power supply uses a high-frequency switching technique to control the flow of electricity, resulting in less energy loss compared to traditional linear power supplies. These power supplies are commonly used in various applications, including computers, televisions, and other electronic devices. Their compact size and lightweight design make them ideal for modern technology, where space and efficiency are crucial.