Capacitor

The capacitor is a passive two terminal electrical component which is used to store the electrical energy electrostatically in an electric field. The mechanism is used to store the energy is that two electrical plates are separated by a dielectric. When a capacitor is connected across a voltage source for a sufficient time it will not pass any current through it. But it will charge to the potential between its plates. Here one plate is act as a +ve plate and another is –ve plate. The unit of the capacitance is farads. The capacitor will block the DC but passes the AC. The main applications of the capacitors are used in analog filter networks, for smoothing the output of the power supplies, and in resonant circuits for fine tuning of frequencies.

The capacitance C of the capacitor is characterized by the ratio of applied charge ±Q and the voltage across the conductors. That is C=Q/V. The working of the capacitor is that it charges with the charge of source and it discharge through the path which it would grounded. This charging and discharging of the capacitor will make it as favorable for oscillators and integrator's.