Skip to main content

What is a capacitor in simple terms

CAPACITOR
            It is a passive components. Capacitor have storing ability. Which can store electric energy in the form of electric charge.
Has the ability to store charge which neither a resistor nor an inductor can do.



CAPACITANCE
            The charge storage ability of a capacitor is called the capacitance of a capacitor.

UNIT OF CAPACITANCE
            The unit used to measure capacitance is Farad (F), its symbol (C).

FARAD
            If a voltage of one volt causes one coulomb of charge to deposited in a capacitor , its capacity will be one farad.


            1 FARAD=1 Coulomb / 1 volt
                               
                            =  9×1011 e.s.u

                            e.s.u= Electrostatic unit 

                                1µF=10-6 F

                                 1nF=10-9 F

                                1pF=10-12F


            Q=C.V

          Q=Charge,coulomb

          C=Capacity , farad

          V=Potential difference, volt

USED OF CAPACITOR

            1)Filter circuit

            2)Rectifier circuit

            3)Oscillator circuit

            4)Amplifier circuit

            5)Other most commonly electronic circuit.

SOME OTHER IMPORTANT TOPIC OF CAPACITOR

            1) Supply frequency increase=Impedance are decrease.

            2) Supply frequency decrease=Impedance are increase.

            3)Power consumption is zero of ideal capacitor.

            4)Current lead 900

            5)Block the passage of direct current through it.

            6)Dc current flow through the capacitor there by capacitor act as a open circuit.

            7)The capacitor allow through the AC current by self.

            8)It opposes any change in the amount of voltage.

ENERGY STORED IN A CAPACITOR

            W=1÷ 2 C. V2

           W= Energy stored, joules

            C= Capacity, farads

            V= Voltage, volt

CAPACITIVE REACTANCE IN A CAPACITOR

            Xc=1÷2.∏.f.c

THE CAPACITANCE OF CAPACITOR DEPEND ON

            1)Distance between two plates.

            2)Area of the plates .

            3)Dielectric material.

TYPE OF CAPACITORS  

            Mainly two types of capacitor

A) Variable capacitors

B) Fixed capacitors

        Ba)Electrolytic capacitors

        Bb)Non electrolytic capacitors

                            1)Paper capacitor

                            2)Ceramic capacitor

                            3)Mica capacitor

A) VARIABLE CAPACITORS

        Its capacitance value are varied 

USED OF VARIABLE CAPACITORS

            1)Radio receiver circuit

            2)Other electronics circuit there capacitance value is varied.

Ba) ELECTROLYTIC CAPACITORS

            This types of capacitor made positive plates and negative plates.

USED OF ELECTROLYTIC CAPACITORS

            Most suitable for filter circuit

Bb) 1) PAPER CAPACITOR

            It is made of two tinfoil sheets. Two sheets a separated by thin tissue paper.

USED OF PAPER CAPACITOR

            1)Used for power supply.

            2)Filters circuits.

            3)Motor -starting.

Bb) 2) CERAMIC CAPACITOR 

            This types of capacitor very large value capacitance.

USED OF CERAMIC CAPACITOR

            1)Use for general purpose.

            2)Use for high frequency circuit feeders.

            3)Use for coupling and decoupling.

Bb) 3) MICA CAPACITORS

            Ii is working for high voltage.

USED FOR MICA CAPACITORS

            1)Use for radio circuit.

            2)Use for high frequency. 

CAPACITOR IN PARALLEL

CT=C1+C2+C3

CAPACITOR IN SERIES

1/CT=1/C1+1/C2+1/C3               

            

 

 
    

Comments

Post a Comment

If you have any doubts,please let me know.

Popular posts from this blog

What is a battery

CELL AND BATTERY                                                     BATTERY Battery             Battery is chemical energy convert to electrical energy. TYPES OF CELL             Cell is two types-------             1)Primary cell             2)Secondary cell 1)PRIMARY CELL             A cell which convert chemical energy to electrical energy.It is active few hours and then stop working. Primary cell is not rechargeable. TYPES OF PRIMARY CELL             1)Voltaic cell               2)Daniel cell             3)Leclanche cell             4)Silver oxide cell             5)Dry cell             6)Mercury cell 1)VOLTAIC CELL                A) Pot--Glass jar.                B) Anode--Copper.                C) Cathode--Zinc.                D) Electrolyte - H 2 SO 4.                        E) E.M.F--1.08 volt per cell. USED OF VOLTAIC CELL                Present day this is not used. 2) DANIEL CELL                A) Pot-- Copper.                B) Anode--Copper.  
Post a Comment
Read more

How do you calculate RL in a circuit

  RL CIRCUIT      RL means Resistor and Inductor . RL circuit mainly two type          1)RL series circuit.          2)RL parallel circuit. 1)    RL SERIES CIRCUIT RL series circuit  Power factor is lagging . Series circuit have current constant. Series circuit have always voltage  calculated. IMPEDANCE OF RL  SERIES  CIRCUIT            Z=√R 2 +X L 2 VOLTAGE OF RL  SERIES  CIRCUIT              V= √V R 2 +V L 2 CURRENT OF RL SERIES CIRCUIT            I=V/Z POWER FACTOR OF RL SERIES CIRCUIT              P.F=V R /V 2)      RL PARALLEL CIRCUIT    RL parallel circuit Parallel circuit have always voltage constant  Parallel circuit have always current calculated  CURRENT CALCULATED BY RL PARALLEL CIRCUIT               I=√I R 2 +I L 2  POWER FACTOR OF RL PARALLEL CIRCUIT                   P.F=I R /I                                                       
Post a Comment
Read more

What is series resonance circuit

    RESONANCE  CIRCUIT   CONDITION OF RESONANCE Must be have two components which is storage energy form of magnetic field and electric field. Inductor is energy storage device which is energy store form of magnetic field. Capacitor is a energy storage device which is energy store form of electric field. Resistive circuit is source voltage and  source current same phase. Power factor must be unity. X L =X C RESONANCE FREQUENCY          F r =1/2 ∏ √L.C                TYPES OF RESONANCE CIRCUIT               1)Series resonance circuit.               2)Parallel resonance circuit. SERIES RESONANCE CIRCUIT Series resonance circuit               Inductor, Capacitor, and  Resistor are connected series line, its called series resonance circuit. IMPORTANT TOPIC OF SERIES RESONANCE CIRCUIT Series resonance circuit have minimum impedance. Series resonance circuit have maximum current. V L =V C   at resonance frequency. X L =X C  at resonance frequency. In the circuit is maximum current. In the ci
Post a Comment
Read more