Presentación1 TRABAJO INGLES

8/13/2019 Presentacin1 TRABAJO INGLES

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To describe thebasic elements of anelectrical circuit are

resistors,capacitors,inductors, switchesand sources. Give astarting point for

further investigationof the function andperformance ofthese devices.


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The elements of anelectrical circuitcan be divided

mainly into :Passive components- are those thatabsorb energy.

Active items - They

are those thatprovide energy.


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The resistor,inductor, capacitorand power are thebasic elements and

may exemplify theoperation of anyelectronic devicewith different

combinations ofthese elements.


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It is a passive

element. Resistor

is called on the

opposition to findthe power to cover

it. It is measured

in ohms and is

denoted by theGreekletter capital

omega ( ) .

Matter has 4 states

in relation to the

flow of electrons.

These areconductors,

semiconductors ,

resistors and

dielectrics.


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The formula that governsaccording to Ohm's law is:

Figura de resistores

They are defined by

the degree of

opposition toelectrical current

( flow of electrons ) .

And the energy

dissipatedirreversibly.


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To this charge storage property is called

capacity or capacitance. In the International

System of Units is measured in farads (F ) ,where 1 farad capacity of a condenser in

which , subject to armor a potential

difference of 1 volt , they acquire an electric

charge of 1 coulomb .


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The voltage across a capacitor

can not change abruptly over

time.

Figure inductors

where :

= dielectric constant .A = area of the plates.

d = distance betweenplates .


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It is a passive component , due to thephenomenon of self-inductance , energy

stored in a magnetic field . An inductor is

usually composed of a coil of conducting

material, typically copper wire. There are air-core inductors core or a ferrous material ,

to increase its inductance .

Inductance : Measurement of the ability of a

device to store energy in the form of a

magnetic field.


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It is an activecircuit orelectrical devicethat provides a

potentialdifference orstream reliably toother circuits canoperate.

A possibleclassification ofpower sourcesindicated :


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Ideal voltage source :

Which generates a d. d . p . between theirconstant and independent of the load terminalthat feeds . If the load resistance is infinite willsay that the source is open circuit , and zero if itwould be an absurd case, since by definition, anideal voltage source can not be shorted.

Ideal current source :

One that provides a constant and independentof the load current feed . If the load resistanceis zero say that the source is shorted , and if wewould be absurd infinite case, since by definitiona source of great strength can not be open-circuited .


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Presentación1 TRABAJO INGLES

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