Types of Capacitors and Applications
Types of capacitors

Types of capacitors

Capacitor Concept

Before getting knowledge about the types of capacitors, firstly, my dear reader, all you need to understand about a capacitor and how does it works. A capacitor or you can say that, an electronic capacitor is one of the most widely used electronic components. It is made by combining two metallic plates. Between these two plates, there will be the use of dielectric material so that an electric field can be easily generated by applying voltage over the plates. Both plates can be recognized on the basis of the charge they hold and charge can be positive or negative.

In present scenario, an electronic capacitor comes in several styles, forms, girths, length and material in order to perform efficiently as per the situation. Now one question still hit your brain that what does capacitors do. My dear friends, capacitors are commonly used for filtering. It means a capacitor will provide power to the microcontroller within the time duration of microseconds so that the microcontroller doesn’t reboot due to voltage drop. Detailed uses of capacitors are given below.

Small value capacitors are used

  1. as components in power supply systems so that the current flows smoothly
  2. as parts of electric filters as well as tuned circuits
  3. to bound signals amid stages of amplifiers

On the other hand, a large value capacitor is used

  1. as a part in several types of electric motors
  2. for storing energy in applications like strobe lights
  3. for correcting power factor in various types of AC power distribution systems

Types of Capacitors

There are several different types of capacitors and each type of capacitor has its own advantage as well as applications. Few major and widely used types of capacitors are listed below.

Ceramic Capacitors

Ceramic Capacitors

Ceramic Capacitors

It is one of the most common types of capacitors generally used in almost every application right from audio to RF. The operating range of this type of capacitor is in between few picofarads to 0.1 microfarads. This type of capacitors are less costly as well as reliable as compared with other types of capacitors.

Electrolytic Capacitors

Electrolytic Capacitors

Electrolytic Capacitors

This type of capacitors are polarized. The best thing about electrolytic capacitors they are designed to provide high capacitance values. Along with this, Electrolytic Capacitors can be easily used in low frequency applications such as audio coupling & decoupling applications, power supplies etc.

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Silver Mica Capacitor

This type of capacitors are not in vogue but still able to offer accuracy, low loss and high level of stability. Generally, silver mica capacitors are used in such places where space is not an issue means they eat lot of space in installation. A silver mica capacitor is limited to maximum 1000 pF.

Super capacitors

Super capacitors

Super capacitors

This type of capacitor is also known by several other names like supercap or ultracapacitor. Super-capacitors holds very large values of capacitance due to which these are generally used in big electrical components where requirement of capacitance is always high.

Variable capacitor

Variable capacitor

Variable capacitors

These capacitors are generally used in L/C circuits. The main characteristic of a variable capacitor is that its capacitance can be changed electronically or mechanically. A variable capacitor comes in several mechanical special forms. Few of them are multiple sections, split stator, differential and butterfly.

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Tantalum Electrolytic Capacitors

This type of capacitors are same as electrolytic capacitors and comes in both surface and leaded mount formats. Manufacturer of a Tantalum Electrolytic Capacitor design special circuit rules in order to execute it in safe environment.

Other types of capacitors Along with the above mentioned types of capacitors, there are several other types of capacitors are available in the market such as film capacitor, film power capacitors, glass capacitors, polypropylene capacitor, metallised  polyester film capacitor poly-carbonate capacitor and aluminum electrolytic capacitors.

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This article has 8 comments

  1. Killa Tima Reply

    what would become of the total capacitance if we connect them in series and later in parallel ?

    • Farhan Ahmad Reply

      Well connecting the capacitors in parallel does increases the resultant capacitance value and when they are connected in series it decreases the capacitance value.

      for series : 1/C = (1/C1)+(1/C2)

      For parallel : C = C1 + C2

      Hope, that helped you..

      1
  2. John Steven Charles Reply

    is there any type of capacitor which has two capacitance values and has three pins ?

    • Farhan Ahmad Reply

      You must use the capacitor of higher voltage rating then 120V. I would suggest you to use 220V. Additionally you must consider the µF value which depends on the purpose for which you need the capacitor.

      1

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