Electronics Components (2)

8/3/2019 Electronics Components (2)

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Lesson 72

BASIC

COMPONENTS

OFELECTRONICS


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RESISTOR

Devices made of

materials which resistor oppose the flow of

electric current.


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Fixed Resistor


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VARIABLE RESISTOR


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TYPE OF RESISTORS:

FIXED RESISTOR values are

fixed and constant.

VARIABLE RESISTOR

resistance can change/vary

through manual setting.


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STRUCTURE OF RESISTORS:

CARBON RESISTOR- where

resistance is derived from color

coded carbon.

WIREWOUND RESISTOR-

resistance is derived from a lengthof wire wrapped around a core

and covered with an insulating

material.


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CARBON RESISTOR WIREWOUND RESISTOR


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CAPACITORS:

Electronic components

which have the ability tostore electrical charges

or voltages.


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TYPES OF CAPACITORS ACCORDING

TO INSULATING MATERIALS

Electrolytic

MylarPolyester

Air

Mica

TantalumCeramics

Paper


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ELECTROLYTIC MYLAR


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POLYESTER AIR


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MICA TANTALUM


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CERAMICS PAPER


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CAPACITORS ARE CLASSIFIED AS

POLARIZED AND NON - POLAR

POLARIZED One terminal is

positive; the other, negative andpolarity is observe.

NONPOLAR- can be connected

in any way in a circuit, without

observing polarity.


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POLARIZED NON-POLAR


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DIODES

Semiconductor devices

consisting of the anode

which is positively charged,and the cathode (k), which is

negatively charged.


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KINDS OF DIODES

Rectifier Diodes- used to rectify andconvert an alternating current to a

pulsating direct current (fluctuating

direct current). Light Emitting Diodes (LED) works

light a rectifier diodes except that

they are used to indicate flow ofelectricity through emission of light.

Zener Diodes Used to regulate

heat.


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RECTIFIER LIGHT EMITTING


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ZENER DIODES


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INTEGRATED CIRCUIT

Semiconductor with

active and passiveelements used to

perform completeelectronic function.


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COIL

Used in electronic circuits to

introduce inductance, thetendency to oppose any

change (increase or

decrease) in the circuit

current.


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COIL


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ANTENNA

A device for capturing

radio frequencies fromspace which are fed

into a receiver.


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ANTENNA


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FUSE

Device rated in amperes

used to protect circuitcomponents from

damage due to overload.


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FUSE


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TRANSFORMER

Component used to step

up or step down thevoltage.


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TRANSFORMER


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TRANSISTOR

A semiconductor device

with three electrodeswhich can function as a

rectifier, amplifier oroscillator.


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TRANSISTORS


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Prepare for another

Lesson:

COLOR CODING OFRESISTORS AND

CAPACITORS

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Electronics Components (2)