Capacitor - Electrical C & V


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22 February 2020


What is Capacitor?

Capacitor is an electronic component in which electric charge is stored. Capacitor is a two conductor normally made of two plates. And between these two plates, a die electric material is placed, which separates it. When the capacitor is connected to a power source it stores the electric charge. And both the plates inside it act to store this charge, of which one plate has positive charge and the other has negative charge.


 A component is formed by combining with dielectric which produces a fixed capacitance, it is called a capacitor. In electronic circuits capacitors are also very useful components like resistors. It is used in amplifiers, oscillator filter circuits and a variety of other electronic circuits. A capacitor is a device that can store the charge inside itself and also return it when needed. It consists of at least two plates. Whose area works above the capacitance of that capacitor. An insulating material is filled between the two plates. The thickness of this insulator also affects the capacitance of the capacitor and also depends on the modulator of the insulator to be filled. The capacitance unit of any capacitor is Faraday. Faraday is a very large unit, so some smaller unit is used.


Classification of Capacitors

Capacitors are classified on the basis of function, which is as follows.

1-Fixed Capacitors - Capacitors that have a fixed capacitance, that is, cannot be lowered, are called stationary capacitors, such as paper, mic, electrolyte, etc.

2- Adjustable Capacitors - Capacitors whose capacities are supported by a screw-driver
Can be set to the required value by converting them to what are called adjustable capacitors, such as trimmer, padre, etc.

3- Variable Capacitors - Capacitors whose value can be easily set anywhere between its maximum and minimum value by a shaft. They are called variable capacitors.

Capacitors Connected In Series

When two or more stones are connected directly to each other's head, this type of connection is called a series connection. And the charge of all the collector connected in series connection is same. But their voltage varies, below you are shown the capacitor connections in series.


In the above diagram you can see that capacitors C1, C2, C3 are placed in the order and the voltage given on these three capacitors will be V1, V2, V3 and the charge F of the capacitors connected in these order will be uniform.
As long as the capacitors are in series, then the formula for extracting their capacitance is given below. Because when they are connected in series, their capacitance will come out differently and when they are connected in parallel, then their capacitance will come out differently.

Capacitors Connected In Parallel

If two or more capital terminals are connected to the negative terminal from the negative terminal to the positive terminal, then they are connected parallel to what is called a parallel connection. The three capacitors are shown in parallel with parallel connection.


Capacitor Use

Capacitors are used in many circuits. The function of the capacitor is to let the AC supply go and stop the DC supply, so you will find it used in many circuits whose names of some circuit are given below. 

• Filtration Circuit
• Coupling Circuit
• Delay Timing Circuit
• Capacitor Polarity

How to check capacitor

If on checking the continuity of a capacitor, the meter needle does not give any deflection, meaning the maximum resistance is seen. So the capacitor can be right and can also be open. Because neither the right capacitor passes the DC nor the open capacitor.

Shorting Condition: - If the capacitor of the meter is checked by the meter, the meter needle shows Full Deflection. Meaning if the needle of the meter comes from left to right then the capacitor is short.


What is Resistor:-  Click Here 
What is Inductor:- Click Here

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