What is the function of a capacitor in an electronic circuit?

The function of a capacitor in an electronic circuit is to store electrical energy. Capacitors achieve this by accumulating charge on two conductive plates separated by an insulating material, known as a dielectric. When a voltage is applied across the capacitor, it holds an electrical charge, and this stored energy can be released when needed. Capacitors are commonly used in various applications, such as filtering, timing circuits, and energy storage, due to their ability to quickly charge and discharge.

Understanding the role of a capacitor is fundamental to grasping how electronic components work together in different circuits, especially in radio technology where capacitors can help manage signals and stabilize voltage levels.