Electronic components

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Review

review

transformer

capacitor

diode

led

relay

ic

resistor

Function of Electronic

components

transformer

A

step

-

down

transformer

is

a

type

of

transformer

that

converts

the

high

voltage

(HV)

and

low

current

from

the

primary

side

of

the

transformer

to

the

low

voltage

(LV)

and

high

current

value

on

the

secondary

side

of

the

transformer

.

Schematic

Symbol

Primary side

Secondary side

capacitor

A

capacitor

is

a

device

that

stores

electrical

energy

in

an

electric

field

by

virtue

of

accumulating

electric

charges

on

two

close

surfaces

insulated

from

each

other

.

It

is

a

passive

electronic

component

with

two

terminals

.

It

also

filters

the

voltage

noise

to

protect

the

circuit

Schematic

Symbol

Negative (

-

)

positive (+)

diode

A

diode

is

a

semiconductor

device

that

essentially

acts

as

a

one

-

way

switch

for

current

.

It

allows

current

to

flow

easily

in

one

direction,

but

severely

restricts

current

from

flowing

in

the

opposite

direction

.

Anode

is

=

positive

Cathode

=

negative

Schematic

Symbol

Led (

Light emitting diode)

A

light

-

emitting

diode

(LED)

is

a

semiconductor

device

that

emits

light

when

current

flows

through

it

.

Most

of

the

time

Led

serves

as

indicator

in

different

circuits

to

see

if

the

voltage

or

current

is

flowing

Schematic

Symbol

relay

Relay

is

electromechanical

switch

used

to

control

circuits

wirelessly

It

uses

small

amount

of

current

to

trigger

its

mechanical

switch

and

control

higher

voltage

circuits

Schematic

Symbol

Ic

(

Integrated circuit)

An

IC

can

function

as

an

amplifier,

oscillator,

timer,

counter,

logic

gate,

computer

memory,

microcontroller

or

microprocessor

.

An

IC

is

the

fundamental

building

block

of

all

modern

electronic

devices

.

Schematic

Symbol

Resistor

A

resistor

is

an

electrical

component

that

limits

or

regulates

the

flow

of

electrical

current

in

an

electronic

circuit

.

Resistors

can

also

be

used

to

provide

a

specific

voltage

for

an

active

device

Schematic

Symbol

???

transformer

diode

capacitor

relay

led

ic

resistor

???

transformer

diode

capacitor

relay

led

ic

resistor

transformer

diode

capacitor

relay

led

ic

resistor