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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