Not yet done and can be added with additional information

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ACTIVITY

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REVIEW

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REVIEW

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TEST
COMPONENTS

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OBJECTIVES:
➢ Apply appropriate testing methods to electronic components
in accordance with technical specifications;
➢ Detect and record problems and faults by testing under the
agreed project or industry practice;
➢ Resolve detected problems and faults during testing in
accordance with agreed project or industry practice;
➢ Evaluate final products and write down reports

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SLIDESMANIA.C
Most of the students today like to
use computer units and other
electronic gadgets, for the
production of lesson outputs, for
livelihood, and social networking site
activities without the know-how on
how to test electronic components.

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SLIDESMANIA.C
ELECTRONIC COMPONENTS
● What is Colour Coding of
Resistors?
Resistors may not display the value
outside but their resistance can be
calculated through their colour pattern
PTH (plated-through-hole) resistors use
a colour-coding system (which really
adds some flair to circuits), and SMD
(surface-mount-device)resistors have
their own value-marking system.
● Resistor
-is an electrical
component that limits
or regulates the flow
of electrical current in
an electronic circuit.
-The SI Unit for
resistor is Ohm

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RESISTORS COLOR-
CODING

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How to use?
1. Select the number of bands on the
resistor you are trying to identify.
2. For each band, select the matching
color in the table column indicating the
band number.
3. The resistance value will be calculated
and shown along with the minimum and
maximum values.
● Resistors cases usually have three
to six bands that indicate their
resistance, tolerance and
sometimes their temperature
coefficient of resistance (TCR). The
bands are read from left to right.

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● In a three-band resistor, the first two bands represent the first two significant digits
followed by one band for the multiplier. Since no tolerance band is available, the
tolerance will always be ±20%.
● In a four-band resistor, which is the most common, the first two bands also represent
the first two significant digits. The third band represents the multiplier. The fourth band
represents the tolerance.
● In a five-band resistor, the first three bands represent the first three significant digits.
The fourth band represents the multiplier. The fifth band represents the tolerance.
● In a six-band resistor, the first five bands have the same representation as a five-band
resistor followed by one extra sixth band that represents the temperature coefficient of
resistance (TCR).

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TOLERANCE
● Is the percentage of error between the actual
measured resistive value and the stated value.
● This is due to the manufacturing process and it is
expressed as a percentage of its preferred value

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CALCULATING
● To calculate the resistance value, you need to group
the values of the significant digits bands — i.e., the
values of the first two or three bands from the left,
depending on the total number of bands. Then you
need to multiply that value by the multiplier to get the
resistance value of the resistor.

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Let's take for example a four-band
resistor with the following band
colors:
Violet Green Yellow Gold

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● Since it is a four-band resistor, the first two bands (violet and green) will indicate the
significant digits which are, according to the table above; 75.
● We then multiply that number by the multiplier indicated with the 3rd band (yellow) which
has the value of; x104 = 10000.
The result of the multiplication will be: 75 x 10000 = 750000Ω = 750kΩ.
● The fourth band (gold) will indicate the tolerance which in our example is: ±5%
To calculate the minimum and maximum resistance values, we multiply the resistance
value by the tolerance percentage to come up with the following values:
Minimum = 750000 - (750000 x 5/100) = 750000 - 37500 = 712500 = 712.5kΩ
Maximum = 750000 + (750000 x 5/100) = 750000 + 37500 = 787500 = 787.5kΩ

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EXAMPLE:

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CAPACITORS
● The effect of
a capacitor is
known as
capacitance.
● A capacitor is a
device that stores
electrical energy in
an electric field. It
is a passive
electronic
component with
two terminals.

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TRANSISTORS
● basically acts as a switch
and an amplifier. In simple
words, we can say that a
transistor is a miniature
device that is used to
control or regulate the
flow of electronic signals.
● type of
a semiconductor dev
ice that can be used
to both conduct and
insulate electric
current or voltage

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● A typical transistor is composed of three
layers of semiconductor materials or
more specifically terminals which helps
to make a connection to an external
circuit and carry the current. A voltage or
current that is applied to any one pair of
the terminals of a transistor controls the
current through the other pair of
terminals. There are three terminals for
a transistor. They are:
• Base: This is used to activate the
transistor.
• Collector: It is the positive lead of
the transistor.
• Emitter: It is the negative lead of the
transistor.

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DIODES ● it has low resistance in
one direction, and high
resistance in the other.
● also known
as rectifiers because
they change alternating
current (ac) into
pulsating direct current
(dc)
● a two-terminal
electronic
component that
conducts current
primarily in one
direction;

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● Diodes have polarity,
determined by
an anode (positive lead)
and cathode (negative
lead). Most diodes allow
current to flow only
when positive voltage is
applied to the anode.
● When a diode allows
current flow, it
is forward-biased.
When a diode
is reverse-biased, it
acts as an insulator and
does not permit current
to flow.

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SEATWORK:
● Calculate the resistance
value and minimum and
maximum resistance
value of the following
resistors:

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SEATWORK:

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SLIDESMANIA.C

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The poem reminds you to always
value life without temper just like
testing the basic electronic
components using the Multi-function
tester to detect problems and faults.

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We will talk about this
first.

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SLIDESMANIA.C
Add your title here.
One of the keys to an effective presentation is
keeping it simple, concentrate on your core
message.
Make it easy for your audience to understand
and respond.

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Add your main point
here.

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Great Idea!

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You can split your content.
Remember that most of our
presentation templates allow
you to change the colors by
going into the master – this
works both in PowerPoint and
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adapt them to your needs.
Colors are emotional and evoke
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they can increase your
audience's interest and improve
learning comprehension and
retention.

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SLIDESMANIA.C
Add your title here.
Did you know that pandas
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Did you know that elephants
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Elephants may be able to
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looking for water.

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SLIDESMANIA.C
Add Images!
Images are a big part
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presentation. They
help your audience
connect with your
ideas on a more
emotional level.

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Use images as backgrounds.

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Here goes your map title.
You can use
maps to show
your offices or
markets. Or as
charts,
highlighting the
countries and
adding your
data.
You can double
click on the
desired country
and change fill
and border
color.

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Here goes your timeline or process.
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2000
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2020

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Add your title
here.
If you are presenting a website,
an internet product or an app,
you can place a screenshot of it
here.

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Add your title
here.
If you are presenting a website,
an internet product or an app,
you can place a screenshot of it
here.

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Add your title
here.
If you are presenting a website,
an internet product or an app,
you can place a screenshot of it
here.

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Add your title
here.
If you are presenting a website,
an internet product or an app,
you can place a screenshot of it
here.

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Thank you!