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TLE – ICT – CSS Quarter 4 – Module 1-4:
Testing Electronic Components
TLE- ICT – CSS - Grade 9 Alternative Delivery Mode Quarter 4 – Module 1-4: Testing Electronic Components First Edition, 2020 Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education Secretary: Leonor Magtolis Briones Undersecretary: Diosdado M. San Antonio
Printed in the Philippines by ________________________ Department of Education –Region VII Schools Division of Negros Oriental Office Address: Kagawasan, Ave., Daro, Dumaguete City, Negros Oriental
Tele #: (035) 225 2376 / 541 1117 E-mail Address: [email protected]
Development Team of the Module
Writers: Ericson B. Elnar
Editors: Reynald Manzano, Ruth Marie B. Eltanal
Reviewers: Mark Dave M. Vendiola, Jesusa D. Paladar
Typesetter: Ericson B. Elnar
Layout Artist: Ericson B. Elnar
Management Team: Senen Priscillo P. Paulin, CESO V Rosela R. Abiera
Joelyza M. Arcilla EdD Maricel S. Rasid
Marcelo K. Palispis EdD Elmar L. Cabrera
Nilita L. Ragay EdD
Antonio B. Baguio, Jr. EdD
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TLE – ICT – CSS Quarter 4 – Module 1-4:
Testing Electronic Components
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This module was designed and written with you in mind. It is here to
help you master how to input data into computer. The scope of this module
permits it to be used in many different learning situations. The language used
recognizes the diverse vocabulary level of students. The lessons are arranged
to follow the standard sequence of the course. But the order in which you
read them can be changed to correspond with the textbook you are now using.
The module contains only one lesson:
• Lesson 1 – Determine Criteria and Plan an Approach for Testing
Electronic Components
After going through this module, you are expected to:
1. identify the parts of an analogue multi tester;
2. measure some electronic components; and
3. practice safety while measuring electronic components.
What I Need to Know
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What I Know
Direction: Identify the word or phrase being described in the sentence. Write your
answers in your notebook.
_______________ 1. It is an electronic measuring instrument that combines several
measurement functions in one unit.
_______________ 2. These are used to connect to whatever device you're planning on
testing and measuring.
_______________ 3. This is a small knob usually located near the dial that is labeled
"Ohms Adjust," "0 Adj," or something similar.
_______________ 4. This allows you to change the function between volts, ohms, and
amps, and to change the scale of the meter.
_______________ 5. This has the arc-shaped scales visible through the window and a
pointer which will indicate the values read from the scale.
_______________ 6. In a multimeter, at what position does the needle of pointer be
located if the test leads are not in contact with anything.
_______________ 7. What are you going to measure in order to determine whether or
not the circuit is Alternating Current or Direct Current?
_______________ 8. In a multimeter, what color of the test probe is associated with
positive charge?
_______________ 9. What is the meaning of VOM?
_______________ 10. In a multimeter, at what position does the needle of pointer be
located if the test leads are in contact with anything.
Note: If you get 100% correct in this pre- assessment, skip the lesson but if
not and only get 50% to 99% correct, then proceed with the lesson.
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Scale Range Selector Positive Probe Test Probes
Dial/Infinity Knob Range Needle/Pointer
Zero Ohm Adjuster Negative Probe Ports
Lesson
1 Determine Criteria and Plan an Approach for Testing
Components
What’s In
In this lesson, you will learn what tool to be used in testing electronic
components. Also, how to use this tool, in the proper way in testing the electronic
components.
What’s New
In order to test some basic electronics components, one must use a multimeter
either analogue or digital.
Identify the parts of the analogue tester by choosing from the words inside the
box. Write your answers in your notebook.
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1. Locate the dial of your multimeter. This has the arc-
shaped scales visible through the window and a pointer which
will indicate the values read from the scale.
2. Find the selector switch, or knob. This allows you to change
the function between volts, ohms, and amps, and to change the
scale (x1, x10, etc.) of the meter.
3. Locate the openings in the case where you'll insert the
test leads. Most multimeters have several jacks used for this
purpose.
4. Locate the test leads. There should be two test leads or
probes. Generally, one is black and the other red. These are
used to connect to whatever device you're planning on testing
and measuring.
5. Find the battery and fuse compartment. This is usually
found on the back but is also sometimes on the side of some
models. This holds the fuse (and possibly a spare), and the
battery that supplies power to the meter for resistance tests.
6. Find the Zero Adjustment knob. This is a small knob
usually located near the dial that is labeled "Ohms Adjust," "0
Adj," or something similar. This is used only in the ohms or
resistance range, while the probes are shorted together
(touching each other).
What is It
A multimeter or a multi-tester, also known as a volt/ohm meter or VOM, is
an electronic measuring instrument that combines several measurement functions
in one unit. A typical multimeter may include features such as the ability to measure
voltage, current and resistance. Multimeters may use analog or digital circuits—
analog multimeters and digital multimeters (often abbreviated DMM or DVOM.)
Initial Steps in Using Analog Multi‐tester
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1. Set the multimeter to Ohms or Resistance. Turn the meter
on if it has a separate power switch. When multimeter measures
resistance in ohms, it cannot measure continuity because
resistance and continuity are opposites. When there is little
resistance, there will be a great deal of continuity, and vice
versa.
2. Observe the meter indication. If the test leads are not in
contact with anything, the needle or pointer of an analog meter
will rest at the left-most position. This represents an infinite
amount of resistance, or an "open circuit." It's safe to say there
is the no continuity, or path between the black and red probes.
3. Connect the test leads. Connect the black test lead to the
jack marked "Common" or "-". Then, connect the red test lead
to the jack marked with the Omega (Ohm symbol) or letter "R"
near it.
4. Hold the probes at the end of the test leads together. The
meter pointer should move fully to the right. Locate the "Zero
Adjust" knob and rotate it so that the meter indicates "0" (or as
close to "0" as possible).
5. Measure the resistance of something like a light bulb that
you know is good. Locate the two electrical contact points of
the bulb. They will be the threaded base and the center of the
bottom of the base.
6. Try different ranges. Change the range of the meter to R x 1.
Zero the meter again for this range and repeat the step above.
Observe how the meter did not go as far to the right as before.
7. Test resistance between hands. Set the meter to the highest
R x value possible and zero the meter.
8. Make sure your reading is accurate. It's very important that
the probes not touch anything other than the device being tested.
A device that has burned out will not show "open" on the meter
when testing if your fingers provide an alternate path around the
device, like when they are touching the probes.
Measuring Resistance
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1. Set the meter for the highest range provided for AC Volts.
Many times, the voltage to be measured has a value that is
unknown. For this reason, the highest range possible is selected
so that the meter circuitry and movement will not be damaged by
voltage greater than expected.
2. Insert your test probes. Insert the black probe in the "COM"
or "-" jack. Next, insert the red probe in the "V" or "+" jack.
3. Locate the voltage scales. There may be several Volt scales
with different maximum values. The range chosen by the selector
knob determines which voltage scale to read.
1. Make sure you've measured the voltage first. You need to
determine whether or not the circuit is AC or DC by measuring
the voltage of the circuit as described in previous steps.
2. Set the meter to the highest AC or DC Amp range
supported. If the circuit to be tested is AC but the meter will only
measure DC amps (or vice versa), stop. The meter must be able
to measure the same mode (AC or DC) amps as the voltage in the
circuit, otherwise it will indicate 0.
Measuring Voltage
Measuring Amperes
What’s More
Direction: Unscramble the letters below to form significant words learned in this
lesson. Write your answers in your notebook.
1. SPAMERE
2. STORESIR
3. EGLOVAT
4. LOGANA
5. TERSET
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What I Have Learned
Direction: Answer the K-W-L chart. Write your answer on your notebook.
K W L
What do you think
you KNOW about
Steps in Using
Multimeter?
What do you WANT to
know about Steps in
Using Multimeter?
What did you LEARN
about Steps in Using
Multimeter?
What I Can Do
Direction: In your notebook, copy and complete the diagram below to show the
correct process in measuring resistance.
Measuring Resistance
Assessment
A. Direction: Identify the word or phrase being described in the sentence. Write your
answers on your notebook.
_______________ 1. It is an electronic measuring instrument that combines several
measurement functions in one unit.
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_______________ 2. These are used to connect to whatever device you're planning on
testing and measuring.
_______________ 3. This is a small knob usually located near the dial that is labeled
"Ohms Adjust," "0 Adj," or something similar.
_______________ 4. This allows you to change the function between volts, ohms, and
amps, and to change the scale of the meter.
_______________ 5. This has the arc-shaped scales visible through the window and a
pointer which will indicate the values read from the scale.
_______________ 6. In a multimeter, at what position does the needle of pointer be
located if the test leads are not in contact with anything.
_______________ 7. What are you going to measure in order to determine whether or
not the circuit is Alternating Current or Direct Current?
_______________ 8. In a multimeter, what color of the test probe is associated with
positive charge.
_______________ 9. What is the meaning of VOM?
_______________ 10. In a multimeter, at what position does the needle of pointer be
located if the test leads are in contact with anything.
B. Direction: Choose from any of the following activities and make a flowchart of it.
Do this on your notebook.
1. Steps in measuring voltage.
2. Steps in measuring amperes.
3. Initial Steps in Using Analog Multi‐tester
Additional Activities
Direction: Draw the proper way of measuring resistance using the following material and equipment. Do this on a piece of short bond paper.
1. Resistor 2. Multimeter
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Answer Key
What I Know
1.Multimeter or multi-tester 2. Test Leads
3. Zero Adjustment Knob
4. Selector Switch 5. Dial
6. Left position 7. Voltage
8. Red or White 9. Volt – Ohm Meter
10. Right Position
What’s New
1. Needle/Pointer 2. Scale
3. Dial/Infinity Knob 4. Zero Ohm Adjuster
5. Range 6. Range Selector
7. Probe Ports
8. Negative Probe 9. Positive Probe
10. Test Probes
What’s More
1. AMPERES 4. ANALOG
2. RESISTORS 5. TESTER 3. VOLTAGE
What Have I Learned
Answers may vary
What I Can Do
Assessment
A. 1.Multimeter or multi-tester
2.Test Leads 3.Zero Adjustment Knob
4.Selector Switch
5.Dial 6.Left position
7.Voltage 8. Red or White
9. Volt – Ohm Meter 10. Right Position
B. 1.Measuring Voltage
2.Measuring Amperes
3.Initial Steps in Using Analog Multi‐tester
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Text References
Multimeter. Accessed April 29, 2021.
https://web.ua.es/docivis/magnet/multimeter.html.
“Resistors and Circuits,” n.d. https://learnabout-
electronics.org/Downloads/Resistors-Module-02.pdf .
“Resistor Colour Code and Resistor Tolerances Explained.” Basic Electronics Tutorials, December 31, 2020. https://www.electronics-
tutorials.ws/resistor/res_2.html.
“How to Test a Capacitor with a Multimeter - ToolBoom.” toolboomcom.
Accessed April 29, 2021. https://toolboom.com/en/articles-and-
video/how-to-test-a-capacitor-with-a-multimeter/.
Technology, Electrical, Anonymous says: Electrical Technology says: Rajender says: Gethro Parfait says: Suh William says: Kevvy Says: et al. “How to Check a Capacitor with Digital Multimeter and Analog AVO Meter. By
Four (5) Methods with Pictorial View.” ELECTRICAL TECHNOLOGY, April 28, 2020. https://www.electricaltechnology.org/2013/06/how-to-
check-capacitor-with-digital.html.
Kuhlman, Jesse, and wikiHow. “How to Test a Transformer.” wikiHow.
wikiHow, May 29, 2020. https://www.wikihow.com/Test-a-
Transformer.
Image References
“Testing Electronics Components.” Accessed April 29, 2021.
http://temelelektronik.info/ders/download/componentsaglamlikkontro
lu.pdf.
Kuhlman, Jesse, and wikiHow. “How to Use a Multimeter.” wikiHow. wikiHow,
December 23, 2020. https://www.wikihow.com/Use-a-Multimeter.
“Word Search Puzzle.” Create Your Own Word Search Puzzle | Discovery
Education Puzzlemaker. Accessed April 29, 2021. http://puzzlemaker.discoveryeducation.com/WordSearchSetupForm.as
p.
“Resistors.” McGraw-Hill Companies, 2007. https://www.oakton.edu/user/1/agero/ELT101/Presentations/Chapte
r02.pdf.
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For inquiries or feedback, please write or call: Department of Education – Schools Division of Negros Oriental Kagawasan, Avenue, Daro, Dumaguete City, Negros Oriental
Tel #: (035) 225 2376 / 541 1117 Email Address: [email protected] Website: lrmds.depednodis.net