What Is A Capacitor Or Condenser?


A capacitor is an electrical component. It consists of a die-electric insulating material between two conductive sheets. Die-electric is a substance that can be polarized under the influence of an electric field. These die-electric materials can be glass, ceramic, plastic or just air.

The container acts as a reservoir to store electricity in the circuit. It used to be called a condenser (still called in some cases). Because, at first, scientists thought, the electricity in the container is completely frozen. But later it was found out that electricity does not freeze here. Only infusions are stored and can be used as needed. The middle die-electric material increases the T capacity. The unit of capacitor is farad.

Types Of Capacitor

Below are some of the most widely used capacitors.

Electrolytic Capacitor

This container is most commonly used for high capacity. Radio filters are used in bypass circuits but cannot be used in AC circuits.

Ceramic Capacitor

Although ceramics are used as di-electric, their capacity is very low. Only 1pF to 1kpF and maximum tolerable power up to 500 voltages. It is mainly used in coupling-decoupling bypass circuits.

Variable Capacitor/Trimmer Capacitor

The value of the trimmer capacitor can be increased or decreased as required. It has many semicircular parallel aluminum sheets divided into two parts. The air between the sheets acts as a die-electric medium. They are used as tuning circuits. The use of capacitors in electrical and electronic circuits is undeniable.

Some Short Questions About Capacitors And Their Answers

The importance of capacitors in electrical or electronic circuits is immense. Inductors, registers, ICs as well as our questions are not less. Below are some such important short questions and their answers.

What is a capacitor?

It is basically an electric charge storage device. Its Bengali meaning is "container" which means that it contains electric charge.

What Is the Function Of The Capacitor In The Circuit

It connects to any electrical or electronics circuit and stores electrical charges. Again the said circuit releases the said accumulated charge.

Capacitors can be easily compared to very small batteries. The battery can store this electrical charge for a long time. Capacitors on the other hand can accumulate this charge for a very short time.

What Type of capacitor should I use in power supply?

Power supply circuits should be a little bigger, thicker and use good quality capacitors. Since power supply is the lifeblood of any circuit and project. So if you make it as good as it is long lasting, its quality is also good. So it would be better to use suitable and quality parts in the power supply without skimping at any time.

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How Many Volt Capacitors Will I Use In A Circuit

The field in particular is such that even if the value of the capacitor is given in the circuit diagram, its voltage is not specified. In that case the voltage of the capacitor has to be taken by holding the value of the supply voltage of the circuit constant. Make sure that the voltage across the capacitor is higher than the supply voltage. Otherwise there is a possibility that the circuit will not work.

Note: There are some circuits that can produce different quality volts even if they run on one supply voltage. Such as IPS, inverter, voltage booster etc. In that case the voltage of the capacitor has to be determined by understanding the circuit. However, the voltage of the capacitor is specifically mentioned in all the circuits.

What Type Of Capacitor Should Be Used In The Amplifier

The power supply is the lifeblood of the power amplifier. Amplifiers do not work well without proper current and voltage. The fun of playing a hi-fi amplifier on a computer or mobile phone is different. Sound systems made with suitable sound boxes must use very high quality Japanese capacitors.

How To Determine The Value Of Small pF Capacitor

Usually the values of PF capacitors are expressed in code. E.g.

101 - This means that its value is 100 pF

102 - means 100 pF or 1 nanofarad value, thus.

105 - means its value is 10000000 pF or it is a 1 micro farad value capacitor

That is, the value of this PF capacitor can be obtained by setting "0" exactly as the value given in the 3rd cell. If you change it to nano farad or micro farad if necessary, its practical value will come out.

In addition to the value, the code used in the capacitor indicates its voltage, tolerance, etc.

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