Why Capacitor is used? Best Applications and Function of Capacitor
The capacitor is used for energy storage, power factor improvement, filtering purposes in electrical and electronic circuits. There are many important applications of the capacitor. Capacitors are widely used in electrical circuits as well as electronic circuits. In this article, we will discuss the main function of Capacitor, applications, and uses.
Function of Capacitor
1.
The main function of a Capacitor to store the electrical energy in the form of
electrical charge. The capacitor can store electrical energy but for a very
short time. It charges very fast and also discharges very fast.
2.
Another function of Capacitor is, it opposes the changes in voltage which
completely different from the Inductor because the inductor opposes the change
in current.
3.
Capacitor draws leading current.
4.
Capacitor Provides capacitive impedance
Why Capacitor is used?
There
are many devices and places in the electrical and electronic circuit where
capacitors are used for different purposes. Some of them are explained below.
Why Capacitor is used in Single-phase Induction Motor?
We
know that single-phase induction motors are not self-starting. To initially
start the induction motor capacitor is used in a single phase induction motor.
There are two windings in single phase induction motor, one is running winding and another is starting winding. The capacitor is connected in series with the starting winding. We already have an article about this topic. So read the full article to know in details. Read Here
There are two windings in single phase induction motor, one is running winding and another is starting winding. The capacitor is connected in series with the starting winding. We already have an article about this topic. So read the full article to know in details. Read Here
Why Capacitor is used in Fluorescent Tube Light Starter?
You
may notice a capacitor is used in the fluorescent tube light starter. Here the
capacitor is connected across the bi-metallic contacts.
The main function of capacitor in a tubelight starter is to reduce electromagnetic interference. It also improves the transient response at the starting of the tub light.
The main function of capacitor in a tubelight starter is to reduce electromagnetic interference. It also improves the transient response at the starting of the tub light.
Why Capacitor is used in Generators?
Capacitors
are also used in some generators such as induction generators. Capacitors are
used in induction generators to maintain the magnetizing current. Other
functions of capacitors in generators are power supply decouplers, feedback
filters, etc.
Why Capacitor is used in Substation?
The
capacitor bank used in substations which contains a no. of capacitors. The
capacitor bank used in the substation to power factor improvement. Capacitor
banks are also used in industries for power factor improvement.
Capacitor Applications
Capacitors
are used in both AC and DC circuits. The purpose of using capacitors in AC and
DC circuits are different. So let's see the applications of capacitors in the
AC and DC Circuit.
Applications of Capacitor in AC Circuit
Power
Factor Improvement: When
we talking about AC then the term "Power Factor" comes. So the main
application of capacitor in AC circuit is power factor improvement. Capacitors
are connected in parallel with the inductive loads to improve the power factor.
Phase
Splitter: Capacitor
is also used in AC for phase splitter or to create phase difference. One of the
greatest examples is the single-phase induction motor where the capacitor is
used as a phase splitter to start the induction motor.
Protection
Purpose: Capacitors
are used in transmission line for protection purpose. They are used in a
capacitive voltage transformer.
Voltage
Step-down: Capacitors
are also used to step down the AC voltage. The capacitor can reduce voltage
creating a voltage drop. There is an advantage in reducing voltage using a
capacitor due to very less power loss.
Applications of Capacitor in DC Circuit
Filtering: Capacitors are
used in DC Circuits for filtering purpose. capacitors are used in rectifier circuits to filter the impure DC coming from the diode circuits.
Coupling
and Decoupling: capacitors
are used in DC circuits for Coupling and Decoupling Purpose. Coupling
capacitors are used RF filter circuits to block the Dc and allows the AC.
Decoupling capacitors are used in the input of the amplifier to reduce the
unwanted noise.
Oscillating
Signal: For
charging and discharging properties of the capacitors they are used in
oscillator circuits to create oscillating signals.
Signal
Processing: Capacitors
are used in signal processing circuits in the communication system and audio
system.
Timer
Circuit: The
basic analog timer circuits are made of capacitors.
Read Also:
- What is Capacitor and How a Capacitor Works? Types
- Supercapacitor Working, Applications, Advantages, Disadvantages, and Future
- Why capacitor is connected in parallel not in series for Power Factor improvement?
- [Actual] Difference and Similarities Between Battery and Capacitor
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Why Capacitor is used? Best Applications and Function of Capacitor
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