What Is A Capacitor And How Does It Work?

It is very likely that you have heard of capacitors, or they are also called capacitors. In this article we will tell you: How does a capacitor work? and everything you need to know about this device.

What is a Capacitor?

Capacitor is one of the most important electrical devices in existence and is present in all electronic and electrical circuits; This means that any digital device has these devices necessary for it to function properly. By creating an electric field, capacitors are capable of storing electrical energy.

What is a capacitor and how does it work

How does a capacitor work?

Functions of Capacitor:

Knowing what a capacitor is, it is important to know its function; Capacitors consist of two metal plates, also separated by an electrical or dielectric insulator; When the capacitors receive an electrical charge, one of the sheets becomes charged with electrons (particles charged with negative energy); Sometimes it releases this negative energy, leaving it with a positive charge.

Thus, when the originally used power supply is removed, the capacitors are still charged as they store it as reserve energy; Because one sheet is charged with electrons and the other with positive energy, they are attracted to each other and retain their charges even when there is no longer an electrical source on them. Materials used as insulators hold the sheets together but prevent them from disappearing when they come into contact with each other.

How do you know if a capacitor is working?

An easy way to tell if a capacitor is working; It’s just a look because if they see you’re bloated, you’re spoiled. These capacitors can also work in an electrical or electronic circuit, but it is better to replace them with new ones.

Another special way to know if our capacitor or capacitor is completely damaged is to use a multimeter, which measures the electrical frequency of electrical devices and also confirms whether they have an electrical charge despite the insulation.

What is a Capacitor Used For?

Capacitors have wide range of applications to store and manage electrical energy. Here are some common uses of capacitors:

  • Energy Storage
  • Motor Start and Run
  • Timing and Oscillation
  • Filtering and Decoupling
  • Tuned Circuits
  • Signal Coupling and Blocking
  • Power Factor Correction
  • Audio Applications
  • Electric Vehicles
  • Flashlights and Camera Flashes
  • Voltage Regulation
  • Electromagnetic Interference (EMI) Suppression
  • Tuned Circuits
  • Signal Coupling and Blocking

What Are 12 Common Types Of Capacitor?

Types of capacitor:

Capacitors are electronic components that store and release electrical energy. They have many types and each designed for specific applications based on factors like capacitance value, voltage rating, and performance characteristics. With full knowledge of how a capacitor works , the types of capacitors that exist are:

  1. Ceramic Capacitors
  2. Electrolytic Capacitors
  3. Film Capacitors
  4. Super Capacitors (Supercapacitors)
  5. Variable Capacitors
  6. Mica Capacitors
  7. Tantalum Capacitors
  8. Trimmer Capacitors
  9. Silver Mica Capacitors
  10. Ceramic Disc Capacitors
  11. Polymer Capacitors
  12. Safety Capacitors


I hope this article helped you learn more about how capacitors work and how powerful these devices are in electrical circuits. In addition, it is recommended to periodically carry out maintenance on the electrical wires of household appliances to check the condition of the capacitors; this process is carried out by a specialist in the field of electrical engineering.

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