BASICS OF CAPACITORS

                                                     CAPACITORS

Capacitors are the most basic components of electronic circuits. The behavior of  capacitor is based on the frequency. Like resistors the capacitors also opposes current and this property of capacitor is known as capacitive reactance. the opposition to the flow of AC current is due to capacitor the capacitance of a capacitor is inversely proportional to the frequency. higher the frequency, lesser will be the corresponding reactance.
there are various ways in which we can classify capacitors but broadly capacitors are divided into two types

• Electrolytic capacitors
• non- electrolytic capacitors

electrolytic capacitors have polarity that is electrolytic capacitor have positive and negative leads. negative polarity is displayed on the capacitor. it is very important to maintain the polarity of electrolytic capacitor while connecting the electrolytic capacitor in any electronic circuit. the positive pin has to be connected to higher polarity and the negative pin has to be connected to lower polarity. electrolytic capacitors are available in wide capacity starting from 1 uF on wards and also the maximum safe voltage up-to which a capacitor can work is also written on the capacitor. if that rating is exceeded then capacitor would explode. normally explosion occurs from the top of electrolytic capacitor. electrolytic capacitors are used in DC circuits to maintain a constant supply.

ELECTROLYTIC CAPACITOR

non electrolytic capacitors are used in high frequency applications. The various types of electrolytic capacitors available in market are ceramic, mica and polyester capacitor. these are the materials used in the construction of non electrolytic capacitors. non electrolytic capacitors are available in smaller capacitance range in the nano farad or pico farad ranges. these type of capacitors are used in filtering purposes, to remove fluctuations and to bypass high frequencies in the circuit.

                                            NON- ELECTROLYTIC CAPACITORS