Advantages And Disadvantages Of Capacitors

Variable capacitor:-

Variable capacitors are also called as trimmers. They are generally small devices. They can be adjusted or “pre – set” to a particular capacitance value with the assist of a small screwdriver.They are available in very little capacitance’s 500pf or less and are non – polarized.
Electrolytic capacitors:-

Electolytic capacitors are used for large capacitance values. A semi – liquid electrolyte solution in the form of a jelly is used, instead of using a very thin metallic film layarelectrode.
Dc voltage applied towards the positive terminal and polarisation will break down the insulating oxide layer and permanent damage may result.
Ceramic capacitors:-

ceramic capacitors also calleda small porcelain and are then stacked together to make a capacitors have a high dielectric constant so that relatively high

They have a capacitance range of 500pf to 50uf and a high working voltage. The downside of paper capacitor that they have high leakage rates. Their tolerances are no better than 10to 20 percent paper capacitor.
Plastic capacitor:-

There are a variety of types of plastic capacitor, offering mang different properties. Types include polycarbonate, polyester, mylar, polystyrene and plastic capacitor. Function capacitor:-

A capacitor is a device that can store electrical charge. Because it can store a Charing and then release that charge it resists any change of voltage a cross it. Because of this is can be used to "damp"changes in voltage,and it can also be used to block DCwhile permitting AC to "pass through" it. The capacitor 's ability to store and release electrical charge can be applied in a number of ways in electronic circuits.
A capacitor combined with an inductor (coil) I 'd the basis of a radio receiver circuit. ( capacitance and inductance can loosely be described as opposites of each