CO_Q0_ICT8_Module6 Information and Communication Technology Computer System Servicing (CSS) Quarter 0 – Module 6 Terminating and Connecting Electrical Wiring and Electronics Circuit (TCEW) 8
CO_Q0_ICT8_Module6 ICT – Computer Systems Servicing- Grade 8 Alternative Delivery Mode Quarter 0 - Module 6: ICT- Terminating and Connecting Electrical Wiring and Electronics Circuit (TCEW) 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 – Caraga Region, Learning Resource Management System Office Address: J.P. Rosales Avenue, Butuan City, Philippines 8600 Telefax / Telephone: (085) 817-7141 E-mail Address: [email protected] Development Team of the Module Writers: Shirley Anne R. Alcuizar and Reynan S. Basilio Editors: Nilo R. Verdon, Bernie R. Pamplona, Avelina C. Duquesa, Grace A. Ando, Rowenah S. Timcang, Junel Anino, Jeho C. Ranin, Arlyn C. Galbo, Reynan S. Basilio, Ofelia B. Duarte Reviewers: Rose Jean V. Robles, Ivy H. Beldad Illustrator: Jilyn M. Betio Layout Artist: Bernie R. Pamplona, Junel M. Anino Management Team: Francis Cesar B. Bringas Isidro M. Biol Jr. Maripaz F. Magno Josephine Chonie M. Obseñares Romeo O. Aprovechar Rayfrocina T. Abao Avelina C. Duquesa Nilo R. Verdon Grace A. Ando Rowenah S. Timcang
CO_Q0_ICT8_Module6 8 Information and Communication Technology Computer System Servicing (CSS) Quarter 0 – Module 6 Terminating and Connecting Electrical Wiring and Electronics Circuit (TCEW)
CO_Q0_ICT8_Module6 Introductory Message This Self-Learning Module (SLM) is prepared so that you, our dear learners, can continue your studies and learn while at home. Activities, questions, directions, exercises, and discussions are carefully stated for you to understand each lesson. Each SLM is composed of different parts. Each part shall guide you step-bystep as you discover and understand the lesson prepared for you. Pre-tests are provided to measure your prior knowledge on lessons in each SLM. This will tell you if you need to proceed on completing this module or if you need to ask your facilitator or your teacher’s assistance for better understanding of the lesson. At the end of each module, you need to answer the post-test to self-check your learning. Answer keys are provided for each activity and test. We trust that you will be honest in using these. In addition to the material in the main text, Notes to the Teacher are also provided to our facilitators and parents for strategies and reminders on how they can best help you on your home-based learning. Please use this module with care. Do not put unnecessary marks on any part of this SLM. Use a separate sheet of paper in answering the exercises and tests. And read the instructions carefully before performing each task. If you have any questions in using this SLM or any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator. Thank you. iv
CO_Q0_ICT8_Module6 What I Need to Know This module was designed and written with you in mind. It is here to help you master the Terminating and Connecting Electrical Wiring and Electronics circuit. 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. This competency is covered in one lesson: Learning Outcome 1 – Plan and prepare for termination/connection electrical wiring/electronics circuits (TLE_IACSS912TCEW-IIIef-21) 1.1 Check materials according to specifications and tasks 1.2 Select appropriate tools and equipment according to task requirements 1.3 Follow planned task to ensure OHS guidelines and procedure 1.4 Prepare electrical wiring/electronics circuits correctly for connecting/ terminating in accordance with instruction and work site procedures Learning Outcome 2 – Terminate/connect electrical wiring/ electronic circuits (TLE_IACSS9- 12TCEW-IIIgi-22) 2.1 Observe safety procedures in using tools and use appropriate personal protective equipment at all times 2.2 Identify the tasks to be undertaken to work safely in accordance with the workplace and standard procedures 2.3 Use appropriate range of methods in termination/connection in accordance to specifications, manufacturer’s requirements, and safety 2.4 Follow correct sequence of operation 2.5 Adjust used accessories 2.6 Confirm termination/connection in accordance with job specification Learning Outcome 3 – Test termination/connections of electrical wiring/electronics circuits (TLE_IACSS912TCEW-IIIi-j23) 3.1 Conduct complete testing of termination/connection of electrical wiring/electronics circuits in compliance with specifications and regulations using appropriate procedures and equipment; 3.2 Check wirings and circuits using specified testing procedures; 3.3 Respond to unplanned events or conditions in accordance with established procedures 1
CO_Q0_ICT8_Module6 What I Know Pretest Directions: Choose and write the letter of the correct answer in your activity notebook. 1. Which of these is a path for transmitting electric current? A. Electric Circuit C. Load B. Integrated Circuit D. Wires and Cable 2. This work is performed at the end of a wire which allows it to connect to a device. A. Jointing C. Troubleshooting B. Tapping D. Wire termination 3. This is the most common component in electronics and is used mainly to control current and voltage within the circuit. A. Capacitor C. Inductors B. Diodes D. Resistors 4. The following are the Personal Protective Equipment (PPE) used in working with electronics, EXCEPT: A. Gloves C. Hearing Protection B. Goggles D. Safety Shoes 5. A DC voltage source containing two or more cells that convert chemical energy to electrical energy. A. Battery C. Switch B. Fuse D. Wire 6. What electronic tool is used to measure voltage, amps and resistance across circuits? A. Multimeter C. Soldering Pencil B. Multi-Volts Power Supply D. Transformer 7. Which of the following tools is used for cutting or trimming of connecting wires or terminal leads in the circuit board? A. Flat Screw Driver C. Philips Screw Driver B. Long Nose Pliers D. Side Cutter Pliers 2
CO_Q0_ICT8_Module6 8. This circuit symbol is called____________? A. Battery C. Lamp B. Bulb D. Transformer 9. The use of ____________ in accomplishing tasks and job orders greatly increase the productivity and accuracy of a worker. A. Cutting Tools C. Gripping Tools B. Hand Tools D. Striking Tools 10. The following are the components of an electronic circuit, EXCEPT: A. Capacitor C. Multimeter B. Fuse D. Transformer 11. This is a type of protective equipment that provides a secure shield around the entire eye and protects against hazards coming from any direction. A. Insulated Gloves C. Goggles B. Insulated Matting D. Safety Footwear 12. It is a process in which two or more items are joined together by melting and putting a filler metal into the joint. A. Jointing C. Soldering B. Melting D. Wrapping 13. What joint is used in the junction boxes and allows the connection of branch or multiple circuits in buildings? A. Fixture joint C. Rattail joint B. Knotted tap joint D. Western Union splice joint 14. It is often a straight joint used for small solid cables. A. Fixture joint C. Rattail joint B. Knotted tap joint D. Western Union splice joint 15. Which electrical device below supplies electric power to an electrical load? A. Bulb C. Multimeter B. Multi-Volts Power Supply D. Transformer 3
CO_Q0_ICT8_Module6 Switch Power Supply Cable wire Bulb Multimeter Lesson 5 Terminating and Connecting Electrical Wiring and Electronics Circuit (TCEW) Electric circuit is a path for transmitting electric current. It includes a tool that provides energy to the charged particles constituting this, like battery or a generator; devices that use current like lamps, electric motors, or computers; and the connecting wires or transmission lines. What’s In Directions: Name the following materials and equipment used in electrical connection. Choose the correct answer inside the box. Write it in your activity notebook. 1. _______________ 2. ________________ 3. _______________ 4. _________________ 5. _________________ 4
CO_Q0_ICT8_Module6 What’s New Directions: Match the description in Column A with the picture in Column B. Write the correct letter of your answer in your activity notebook. Column A Column B A. B. C. D. E. F. 1. It is a manually operated device capable of making, breaking, and changing the connection in an electronics or electrical circuit. 2. A safety device used to protect an electrical circuit from the effect of excessive current. 3. It refers to a single electrical conductor that are used to bear mechanical loads or electricity and telecommunication signals. 4. This is used to control current and voltage within the circuit. 5. It acts as a switch turning current on and off and as an amplifier. 5
CO_Q0_ICT8_Module6 What is It Unlocking of Technical Terms Wire termination is the point where a line, channel or circuit ends. Electronic Circuit is a complete course of conductors through which current can travel. Circuits provide a path for current to flow. Electrical wiring is an electrical installation of cabling and associated devices like switches, distribution boards, sockets and light fittings in an exceedingly structure. Direct Current (DC) is an electrical charge (current) only flows in one direction. Alternating Current (AC) changes direction periodically. The voltage in AC circuits also periodically reverses because the current changes direction. Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. Schematic Symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. Voltage is the measure of the push on each electron which makes the electron move. The term potential difference and voltage are often used interchangeably to mean the “push”, thus, you may see the term electromotive force (EMF) or just the word potential to describe the electron push in certain instances. Soldering is a process in which two or more items are joined together by melting and putting a filler metal into the joint. The filler metal has a lower melting point than the adjoining metal. Unlike welding, soldering does not involve melting the work pieces. Joint is the connection of two lengths of conductors by a method which ensures a continuous path for the unimpeded flow of an electrical current. Termination is applied to the end of a conductor prepared and suitable for connection to the terminal to which is to be connected by mechanical means. 6
CO_Q0_ICT8_Module6 Electrical Theory Direct Current and Alternating Current Direct Current or DC is the first type of current because it was easy to produce. This type of current always flows in one direction. Alternating Current or AC is the solution to the problem of DC. AC allows the flow of current in two directions. Figure 1. AC and DC Wave Form Components of a Simple Circuit A simple circuit contains the minimum things needed to have a functioning electric circuit. A simple circuit requires the following: AC/DC source Equipment that will operate on either an Alternating Current (AC) or Direct current (DC) power source. Battery is a DC voltage source containing two or more cells that convert chemical energy to electrical energy. Cell is a single unit used to convert chemical energy into a DC electrical voltage. Fuse is a safety device used to protect an electrical circuit from the effect of excessive current. Wires are single electrical conductor that is used to bear mechanical loads or electricity and telecommunication signals. Cable is a group of wires wrapped in one jacket. Switch is a device used to break an electric current or transfer it to another conductor. Load is the power consumed by a circuit. Whatever component or piece of equipment is connected to a source and draws current from it is a load. The following are examples of loads: Bulb, television, refrigerators, computers, mobile phones, and other appliances or gadgets. 7
CO_Q0_ICT8_Module6 Parts of a Simple Circuit A simple circuit contains the minimum things needed to have a functioning electric circuit. Source refers to devices used to supply AC or DC voltage. Consuming is any device that consumes voltage, whatever component or piece of equipment that is connected to a source and draws current from a source is a load. Controlling is any device having two states, on (closed) or off (open). Protecting is a component used to open the circuit when current exceeds a predetermined maximum value. Connecting is a material that conducts electric current very well and used to connect a complete path for current. Procedures in Circuit Designing 1. Prepare all the tools and materials needed. 2. Make a simple circuit by using schematic symbol: load consuming device protecting device connecting device 3. Make sure that the circuit has the following requirement that a simple circuit must have: a source of electrical potential difference or voltage a conductive path which would allow for the movement of charges an electrical resistance which is loosely defined as any object that uses electricity to do work Source Consuming Controlling Connecting device Protecting device 8
CO_Q0_ICT8_Module6 Symbol Symbol Symbol Symbol Symbol Common Electronic Components 1. Classifications of Electronic Component A. Passive devices is one that contributes no power gain (amplification) to a circuit or system. It has no control action and does not require any input other than a signal to perform its function. In other words, "A component with no brains!" Examples are Resistors, Capacitors and Inductors. Resistor This is the most common component in electronics. It is used mainly to control current and voltage within the circuit. Capacitors Capacitors, or "caps", vary in size and shape. Whatever the size or shape, the purpose is the same. It stores electrical energy in the form of electrostatic charge. Inductors Inductors are used in Alternating Current (AC) circuits to oppose changes in the existing current. B. Active Devices are components that are capable of controlling voltages or currents and can create a switching action in the circuit. In other words, "Devices with smarts!" Examples are Diodes, Transistors and Integrated circuits. Diodes Diodes are basically a one‐way valve for electrical current. They let it flow in one direction (from positive to negative) and not in the other direction. LED LEDs are simply diodes that emit light of one form or another. They are used as indicator devices. Example: LED lit equals machine on. Transistors The transistor performs two basic functions. 1) It acts as a switch turning current on and off. 2) It acts as an amplifier. Integrated Circuit Integrated Circuit (IC) are complex circuits inside one simple package. Silicon and metals are used to simulate resistors, capacitors, transistors, etc. It is a space saving miracle. Symbol 9
CO_Q0_ICT8_Module6 Electronic Schematic Symbols Electrical & electronic symbols and images are used by engineers in circuit diagrams and schematics to show how a circuits components are connected. The basic electrical and electronic graphical symbols presented here are the more generally accepted graphical symbols because of their common usage across a range of electrical and electronic fields. The individual graphical symbols below are given along with a brief description and explanation. Wires and Connections Component Circuit Symbol Function of Component Wire To pass current very easily from one part of a circuit to another. Wires joined A “blob” (represented by dot) should be drawn where wires are connected (joined), but it is sometimes omitted. Power Supplies/Source Component Circuit Symbol Function of Component Cell The larger terminal (on the left) is positive (+). A single cell is often called a battery, but strictly a battery is two or more cells joined together. It supplies electrical energy. Battery A battery is more than one cell that supplies electrical energy. The larger terminal (on the left) is positive (+). DC supply DC = Direct Current is always flowing in one direction that also supplies electrical energy. AC supply AC = Alternating Current is also a component that supplies electrical energy while continually changing direction. Fuse A safety device which will “blow” (melt) if the current flowing through it exceeds a specified value. Transformer Transformers are used to step up (increase) and step down (decrease) AC voltages. Output Devices/Loads: Lamps, Heater, Motor Component Circuit Symbol Function of Component Lamp (lighting) This symbol is used for a lamp providing illumination, for example a car headlamp or torch bulb. Heater A transducer which converts electrical energy to heat. 10
CO_Q0_ICT8_Module6 Motor It is also a transducer which converts electrical energy to kinetic energy (motion). Switches Component Circuit Symbol Function of Component On‐Off Switch (SPST) An on‐off switch allows current to flow only when it is in the closed (on) position. Use of Tools and Equipment To work with electronic and electrical circuits, a beginner must acquire special hand tools and equipment. Each of these hand tools and equipment does one or more specific job in connecting, replacing, securing and troubleshooting of electronic circuits. Basic Electronic Hand Tools and Equipment A. Common Tools Long Nose Pliers is used for holding, bending and stretching the lead of electronics component or connecting wire. Side Cutter Pliers is used for cutting or trimming of connecting wires or terminal leads within the circuit board. Flat Screw Driver is used to drive or fasten negative slotted screws. Philips Screw Driver- is used to drive or fasten positive slotted screws. Soldering Pencil is used to join two or more metal conductors with the support of soldering lead melted around it. Desoldering Tool is used to unsoldered unwanted parts or component in the circuit with the support of soldering pencil. B. Basic Electronic Equipment Multi-Volts Power Supply is an device that supplies electric power to an electrical load. Multimeter is an electronic tool used to measure voltage, amps and resistance across circuits. 11
CO_Q0_ICT8_Module6 Electrical and Electronic Safety Before engaging on any electronics, consider following these basic safety precautions to help reduce any hazards. 1. Remove any electronic equipment you are testing or working on from the ability source. 2. Never assume the power circuit is off. Test and test again with a voltmeter to confirm. 3. Remove fuses and replace them only after the power to the circuit is disconnected. 4. Don’t connect power to a circuit until you are done performing on it and rechecked the work. 5. Always make sure that all electronics equipment is properly grounded. 6. If it is damaged, replace it. For example, replace cables instead of repairing with insulating tape. 7. Always use the proper electronics repair and maintenance tools. 8. Always return covers after removing them to reduce the chance of electric shock. 9. Make sure your circuit is not overloaded. 10. Always have safety equipment such as fire extinguisher, a basic aid kit and a mobile phone nearby. 11.It is important to make sure that you are safe when working on electronic circuits. Safety Procedures in Using Hand Tools and Equipment The use of hand tools in accomplishing electronic tasks and jobs are greatly increase the productivity and accuracy of a worker. Although hand tools provide convenience and ease in completing any task, it is also going to cause injuries and infirmities if used incorrectly. Safety procedures should always be a priority in any workplace in order that the security of all is assured. Different types of tools can be utilized differently. Listed below are some number of ways to utilize these tools but also maintain safety in using them: Cutting tools like as cutters must be sharpened always. Gripping tools like as pliers must maintain a strong grip. Driving tools like as screw drivers should always be kept straightened. Diagnostic tools like a tester should always be calibrated before use. Use the tools only as recommended by the manufacturer. Workplace Safety Precautions Work space must be observed properly. An unsafe workplace can possibly cause harm and injuries. One should bear in mind of the hazards that a piece area is hazardous sometimes. Correct posture must be practiced when using hand tools. Awkward postures make more demands on your body. 12
CO_Q0_ICT8_Module6 Use the correct Personal Protective Equipment (PPE) to protect you from exposure to potential hazards. PPEs are specialized gear used to protect the worker from falling objects, loud noises, sharp edges, dust or any particles, and dangerous chemicals. Insulated Gloves prevents electricity from traveling into your hands should there be an exposed wire, short circuit, or other issue. Insulated Matting puts a protective layer between the worker and the floor. It can help prevent electricity from traveling up from the ground into the person’s body. Safety Footwear should be routinely worn in all working areas and also the shoes or boots should incorporate steel toe-cap and non-slip soles. Insulated Ladders prevents transmission of electricity into the person who is using it. Goggles provide protection from impact, dust and chemical splash and provide a secure shield around the entire eye and protect against hazards coming from any direction. Rescue Rods is used to drag someone who is electrocuted within the area for safety or push away the source of electricity. Voltage Detectors shows the level of electricity in a given system at the current time, so employees will not mistakenly begin acting on a system until all power has been eliminated. Electrical Cable Jointing Procedures From time to time it becomes necessary to splice or join wires together when working with electronic equipment or with electrical wiring. Joining electric power cables is as simple as twisting the wires and taping them. 13
CO_Q0_ICT8_Module6 Typical Electrical Cable Jointing Methods A. Western Union Splice Joint This is often a straight joint used for small solid cables. 1. Remove the insulation. 2. Bring the 2 conductors to a crossed position and then make a long bend or twist in each wire. 3. Wrap the end of 1 of the wires around the straight portion of the other wire, and then do the same for the other wire. Repeat this for about four or five times. 4. Press ends of the wires down close to the straight portions of the wire to prevent the ends from piercing through the insulation tape. 5. Insulate the joint using the electrical tape. B. Rattail Joint The rattail joint is usually used in the junction boxes to create the joint. 1. Strip the insulation off the ends of the cable to be joined at about 50 mm. 2. Twist the wires to create the rattail effect. C. Fixture Joint This is a type of branch joint connecting a small-diameter wire to the large diameter conductor such as those used in lighting fixtures. 1. Remove the insulation. 2. Wrap the fixture wire around the branch wire. 3. Bend the branch wire over the completed turns. 4. Wrap the remaining fixture wire over the bent branch wire. 5. This can be followed by soldering and taping, or simply taping of the joint. 15
CO_Q0_ICT8_Module6 D. Knotted Tap Joint The knotted tap joint is used to branch joints to connect a branch wire to a continuous wire. 1. Remove about 1 inch of insulation from the main wire and about 3 inches from the branch wire. 2. Place the branch wire behind the main wire so that three-fourths of its bare wire extends above the main wire. 3. Bring the branch wire over the main wire, around itself, and finally over the main wire so that it forms a knot. Wrap the wire around the main conductor in short, tight turns and trim its end. Soldering Process Items to be soldered should normally be "tinned" before making a mechanical connection. Tinning is the coating of the material to be soldered with a light coat of solder. Cable Soldering Methods There are two types of solder used in electrical work 1. Fine Solder (tin man’s solder) It has 60% tin and 40% lead Has a low melting point due to high amount of tin Commonly used in electrical joints 2. Plumbers Metal It has 30% tin and 70% lead. Is used for plumbing joints in armored cables as it remains in a plastic shape allowing it to be shaped longer than fine solder. Using Analog Multimeter A multimeter is an instrument used to check for AC or DC voltages, resistance and continuity of electrical components, and small amounts of current in circuits. This instrument will let you check to see if there is voltage present on a circuit. By doing so, a multimeter can help you achieve a variety of useful tasks, such as measuring ohms, volts, and amps. A. Initial Steps in Using Analog Multi‐tester 1. Connect the test probe to the appropriate jack. The red test probe to the positive (+) jack and the black to the common (‐) jack. 16
CO_Q0_ICT8_Module6 2. Check if the pointer rests exactly at the infinite zero position in ohmmeter range. 3. Check the probes if they are in condition. (Ohmmeter calibration) a. Set the Multi‐tester to corresponding selector resistance range. b. Short the two test probes lead together. Zero Ohm Adjustment knob Note: The pointer should deflect towards zeroohm reading. Adjust the ohm adjustment if the pointer could not rest exactly at “O” ohm reading. As indicated, the pointer rests out of the range of ohmmeter scale. Adjust the ohm adjustment counter clockwise until the pointer rests “O” ohm reading. 17
CO_Q0_ICT8_Module6 B. Resistance Measurements 1. Always do the “Initial Steps in Using Analog Multi‐tester”. 2. In testing resistors, capacitors, diodes etc. do not touch both test probe lead, because our body also has resistance that could affect the reading value of the electronic components we are testing. 3. If you do not know the value of the resistor to be measured, find the ohmmeter selector setting until you have a clear reading in the ohmmeter scale. 4. Select the desired resistance range scale with selector switch. Testing a 55K ohm resistance Range: x10 K ohm The pointer stops at 5.5 in x10K range on selector switch Ohm Adjustment Ohmmeter Scale (From infinite to Zero) Infinite Resistance open resistor – Open connection Ohmmeter Selector Range (x1, x10, x1K, x10K ohms) 18
CO_Q0_ICT8_Module6 Demands for higher quality and higher production volume have led to many innovations in wire termination. For centuries, copper wire has been used as an electrical conduit. But wire requires termination. Simple screw clamps were originally used to terminate wire. Although screw clamps are still used today, there are now numerous means to terminate wires. Proper cable termination practices are vital for the complete and accurate transfer of both analog and digital information signals. A wire termination is the work performed to the end of a wire that allows it to connect to a device (connector, switch, terminal, etc.). During termination, you press the cable between two edges of a metal clip, which displaces the insulation and exposes the copper conductor. This ensures a solid connection between the copper conductor and terminating clip. The setting (x1K in 56K Ohm resistor) is not an advisable setting in testing 55K ohms resistance. Because, the pointer stops somewhere in 50. You cannot clearly read the resistance value, unlike in x10K ohm setting. Testing a 55 K ohm resistance Range: x1 K ohm 19
CO_Q0_ICT8_Module6 A. Capacitor B. Diode C. Resistor D. Transistor E. Integrated Circuit What’s More Activity 1: Meant to Be Directions: Match the symbols in Column A to their components in Column B and write your answer in your activity notebook. A B 1. 2. 3. 4. 5. A B 1. 2. 3. 4. 5. A. Wire B. Switch C. Lamp lighting D. Cell E. Fuse 20
CO_Q0_ICT8_Module6 Activity 2: Who Am I Directions: Complete the table by supplying the missing information in each column. Write your answer in your activity notebook. Electrical Cable Electrical cable jointing method Uses 1. 2. 3. 4. Activity 3: Change for a Better Directions: Modified True or False. Write True if the underlined statement is correct. If false, change the underlined word to make it correct. Write the answer in your activity notebook. 1. Turn On power and plug from the wall before working on electric or electronic circuits, except when absolutely necessary. 2. Do not work on electrical equipment in a wet area or when touching an object that may provide a hazardous earth ground path. 3. Complete all your tools and check it carefully before turning on the power supply. 4. Inspect cabling for defects such as frayed wiring, loose connections, or cracked insulation. 5. Wear metal jewelry, watches, rings, etc., before working on electrical circuits. 21
CO_Q0_ICT8_Module6 What I Have Learned Directions: Give the correct word referred to by the statements below. Write the answer in your activity notebook. 1. It is charged with a magnetic field and when that field collapses it produces current in the opposite direction. 2. This is an electronic tool used to measure voltage, amps, and resistance across circuits. 3. A device used to supply AC or DC voltage. 4. It is a safety device used to protect an electrical circuit from effect of excessive current. 5. It refers to a DC voltage source containing two or more cells that convert chemical energy to electrical energy. Voltage detector Battery Fuse Power supply Inductors Multimeter 22
CO_Q0_ICT8_Module6 What I Can Do Directions: Draw the schematic diagram in your activity notebook. Schematic diagram of a simple electric circuit with the following components: light bulb, switch, battery, and resistor. Rubric for Rating Description Rating/ Points The drawing shows correct and clear illustration of a simple circuit without any erasures. 10 pts The drawing shows correct and clear illustration of a simple circuit with visible 2-3 erasures. 7 pts The drawing shows the correct illustration of a simple circuit with visible 4 or more erasures. 5 pts 23
CO_Q0_ICT8_Module6 Assessment Posttest Directions: Choose the letter of the correct answer. Write the answer in your activity notebook. 1. What electronic tool is used to measure voltage, amps and resistance across circuits? A. Multimeter C. Soldering Pencil B. Multi-Volts Power Supply D. Transformer 2. This is the most common component in electronics and is used mainly to control current and voltage within the circuit. A. Capacitor C. Inductors B. Diodes D. Resistors 3. The following are the Personal Protective Equipment (PPE) used in working with electronics, EXCEPT: A. Gloves C. Hearing Protection B. Goggles D. Safety Shoes 4. Which electrical device below supplies electric power to an electrical load? A. Bulb C. Multimeter B. Multi-Volts Power Supply D. Transformer 5. It is a process in which two or more items are joined together by melting and putting a filler metal into the joint. A. Jointing C. Soldering B. Melting D. Wrapping 6. Which of these is a path for transmitting electric current? A. Electric Circuit C. Load B. Integrated Circuit D. Wires and Cable 7. This circuit symbol is called____________? A. Battery C. Lamp B. Bulb D. Transformer 24
CO_Q0_ICT8_Module6 8. This work is performed at the end of a wire which allows it to connect to a device. A. Jointing C. Troubleshooting B. Tapping D. Wire termination 9. The use of ____________ in accomplishing tasks and job orders greatly increase the productivity and accuracy of a worker. A. Cutting Tools C. Gripping Tools B. Hand Tools D. Striking Tools 10. What joint is used in the junction boxes and allows the connection of branch or multiple circuits in buildings? A. Fixture joint C. Rattail joint B. Knotted tap joint D. Western Union splice joint 11. Which of the following tools is used for cutting or trimming of connecting wires or terminal leads in the circuit board? A. Flat Screw Driver C. Philips Screw Driver B. Long Nose Pliers D. Side Cutter Pliers 12. This is a type of protective equipment that provides a secure shield around the entire eye and protects against hazards coming from any direction. A. Insulated Gloves C. Goggles B. Insulated Matting D. Safety Footwear 13. The following are the components of an electronic circuit, EXCEPT: A. Capacitor C. Multimeter B. Fuse D. Transformer 14. It is often a straight joint used for small solid cables. A. Fixture joint C. Rattail joint B. Knotted tap joint D. Western Union splice joint 15. A DC voltage source containing two or more cells that convert chemical energy to electrical energy. A. Battery C. Switch B. Fuse D. Wire 25
CO_Q0_ICT8_Module6 Additional Activities Directions: Answer the following questions in a paragraph form with at least 3 to 5 sentences in your activity notebook. 1. Write the safety measures in working with electrical/ electronic jobs? ___________________________________________________________________________ ___________________________________________________________________________ __________________________________________________________________________. 2. Choose a specific method of jointing. Explain how are you going to do it. ___________________________________________________________________________ ___________________________________________________________________________ __________________________________________________________________________. Rubric for Rating Description Rating/ Points 5 4 3 2 1 Writing Technicality Clear Understandable Content / Organization Order of thought Express the idea of the topic Presentation Pleasing to the eye of the reader Spelling, punctuation, usage of words 26
CO_Q0_ICT8_Module6 Pre Test 1. A 2. D 3. D 4. C 5. A 6. A 7. D 8. C 9. B 10.C 11. C 12. C 13.C 14. D 15. A Post Test 1. A 2. D 3. C 4. B 5. C 6. A 7. C 8. D 9. B 10.C 11. D 12. C 13. C 14. D 15. A Answer Key What’s More Activity 2 used in the - 1. Rattail Joint junction boxes - Western Union splice joint 2. used for small solid cables used to - p joint Knotted ta 3. branch joints to connect a branch wire to a continuous wire. used in - Fixture joint 4. lighting fixtures Activity 3 1. Turn off power and unplug 2. True 3. Complete all your wiring 4. True 5. Remove metal What’s More Activity 1 A. 1. D B 2. A 3. E 4. C 5. B. E 1. C 2. A 3. B 4. D 5. What’s In 1.Cable wire 2. Multimeter 3. Switch 4. Power supply 5. Bulb What I have learned 1. Inductors 2. Multimeter 3. Power supply 4. Fuse 5. Battery 6. Googles 7. Voltage detector 8. Insulated gloves 9. PPE Insulated ladder 10. What’s New F 1. E 2. B 3. A 4. D 5. 27
CO_Q0_ICT8_Module6 References Department of Education. “Terminating and Connecting Electrical Wiring and Electronic Circuits”, Retrieved from: https://kapitolyohs.files.wordpress.com/2011/06/terminating-and-connecting-ofelectrical-wirings-and-electronics-circuits-2nd.pdf Public Technical-Vocational High Schools. “Terminating and Connecting Electrical Wiring and Electronic Circuits”, Retrieved from: Competency-Based Curriculum Material, Computer Hardware Servicing https://www.scribd.com/doc/219419403/CHS-Module-3-Terminate-and-Connectof-Electrical-Wiring-and-Electronic-Circuits Department of Education. Competency-Based Curriculum Material Second Year. on Apr 21, 2014 https://www.scribd.com/doc/219419403/CHS-Module-3-Terminateand-Connect-of-Electrical-Wiring-and-Electronic-Circuits Michigan State University. Electrical Safety Date: Sept. 7, 1999. Accessed June 15, 2020. Retrieved from: https://www.egr.msu.edu/eceshop/labs/safety/safety.pdf Mejica, Joshua Dave. Safety procedures in using hand tools and equipment. Last updated 18th January 2017. Accessed on June 24, 2020. Retrieved from: http://ndcmejica.blogspot.com/2017/01/safety-procedures-in-using-handtools.html?view=flipcard Creative Safety Supply. What is common PPE used for electrical safety? Accessed on June 26, 2020. Retrieved from: https://www.creativesafetysupply.com/qa/electrical-safety/what-is-common-ppefor-electrical-safety GARY. Safety Precautions to Take When Working with Electronic Equipment. Last updated February 6, 2017. Accessed on June 27, 2020. Retrieved from: http://www.blog4safety.com/2017/02/safety-precautions-to-take-when-workingwith-electronic-equipment/ kariuki kinuthia. Typical electrical cable jointing methods. Published on Apr 15, 2016. Accessed on June 26, 2020. Retrieved from: https://www.slideshare.net/kariukikinuthia/joints-and-terminations Photos/Illustration Credits Betio, Jilyn M. “Goggles” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Gloves” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Shoes” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Ladder” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Mat” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Rescue Rods” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Voltage Detector” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Soldering tool” [original illustration]. Butuan City. 2020. 28
CO_Q0_ICT8_Module6 Betio, Jilyn M. “Soldering tool” [original illustration]. Butuan City. 2020 Betio, Jilyn M. “Resistor” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Fuse” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Wires and Cable” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Switch” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Bulb” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Capacitors” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Inductors” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Diodes” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “LEDs” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Transistor” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Long Nose Pliers” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Side Cutter Pliers” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Flat Screw Driver” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Philips Screw Driver” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Soldering Pencil” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Desoldering Tool” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “Multi-Volts Power Supply” [original illustration]. Butuan City. 2020. Betio, Jilyn M. “multimeter” [original illustration]. Butuan City. 2020. 29
CO_Q0_ICT8_Module6 For inquiries or feedback, please write or call: Department of Education - Bureau of Learning Resources (DepEd-BLR) Ground Floor, Bonifacio Bldg., DepEd Complex Meralco Avenue, Pasig City, Philippines 1600 Telefax: (632) 8634-1072; 8634-1054; 8631-4985 Email Address: [email protected] * [email protected]