Capacitors, within the Power Supply category, are fundamental electronic components that store and release electrical energy. They work by holding a charge on two plates separated by an insulating material called a dielectric. Capacitors are used in a wide variety of electrical and electronic circuits to perform functions such as smoothing power supply outputs, stabilizing voltage, and filtering signals to remove noise. They come in various types and sizes, tailored to specific applications—ranging from tiny ceramic capacitors in smartphones to large supercapacitors in industrial power systems. Capacitors are crucial for managing current flow in electronic devices, ensuring that these devices operate efficiently and reliably.