Capacitors are electrical components that are the basis of any electrical circuit. They are two electrically charged conductors separated by a dielectric such as paper, plastic, glass, air, or other material that is a weak conductor. A field is created between the two wires in which electrical energy can be stored. This conserved electrical energy can be used in compensating for dips in the electromagnetic field. The capacity of stored electrical energy is measured with the unit farad.
Filter capacitors or filter capacitors, as their name suggests, serve to filter and clear frequencies. A filter capacitor is an electronic energy storage element that is installed at both ends of an electrical circuit to clean up the ripple and oscillations of the electrical voltage, respectively, from alternating AC voltage to a stable output DC voltage. Filter capacitors are usually of large capacity and are used in combination with voltage regulators and stabilizers. They are suitable for a variety of electrical equipment such as microwave ovens, at radio frequencies, computers use filter capacitors, monitors, TVs. They help the smooth and stable operation of electronic devices and minimize the probability of damage, thus extending their service life.