ELECTRONICS TOOLS - TLE 7/8 - MS RESANE
- 1. CONSUMER ELECTRONICS SERVICING Lesson 1 Basic Hand Tools
- 2. What is Electronics? the branch of physics and technology concerned with the design of circuits using transistors and microchips, and with the behavior and movement of electrons in a semiconductor, conductor, vacuum, or gas.
- 3. Name the tools you are familiar with.
- 4. BASIC HAND TOOLS Driving Tools Soldering Tools Splicing Tools Boring Tools Cutting Tools Auxiliary Tools
- 6. SCREWDRIVER Screwdrivers are hand tools specifically designed to insert and tighten, or to loosen and remove screws. A screwdriver comprises a head or tip, which engages with a screw, a mechanism to apply force by rotating the tip, and some way to position and support the screwdriver, the tip of which is shaped in to fit a particular type of screw.
- 7. SLOTTED SCREWDRIVER It is used to drive or fasten negative slotted screws.
- 8. PHILLIPS SCREWDRIVER It is used to drive or fasten positive slotted screws. It is a screwdriver that could take greater torque and could provide tighter fastenings.
- 9. JEWELER'S SCREWDRIVER SET A set of small screw drivers composed of slotted and Phillips screwdrivers.
- 10. SHORT QUIZ #1 Directions: Choose the letter of the correct answer. 1. What do you call a tool used to tighten or loosen slotted screws? a. Jewelry Screwdriver c. Phillips Screwdriver b. Screwdriver d. Slotted Screwdriver 2. What type of screwdriver is composed of small slotted and Phillips screwdrivers? a. Jewelry Screwdriver c. Phillips Screwdriver b. Screwdriver d. Slotted Screwdriver 3. It is a screwdriver that could take greater torque and could provide tighter fastenings. a. Jewelry Screwdriver c. Phillips Screwdriver b. Screwdriver d. Slotted Screwdriver 4. What hand tool is designed to insert and tighten, or to loosen and remove screws. a. Jewelry Screwdriver c. Phillips Screwdriver b. Screwdriver d. Slotted Screwdriver 5. What is a handheld device that aids in accomplishing a task? a. Equipment c. Paraphernalia b. Device d. Tools
- 12. SOLDERING IRON is a device for applying heat to melt solder in attaching two metal parts. A soldering iron is composed of a heated metal tip and an insulated handle. For electrical work, wires are usually soldered to printed circuit boards, other wires, or small terminals. A low-power iron (20-30 Watts) is suitable for this work.
- 13. SOLDERING TOOL STAND is a place where the soldering iron is placed during usage. This will keep the soldering iron away from flammable materials. The stand often comes with a sponge used in cleaning the tip of the soldering iron.
- 14. DESOLDERING TOOL is used in removing soldered wires and components on printed circuit boards for troubleshooting and repair purposes.
- 15. SHORT QUIZ #2 Directions: Choose the letter of the correct answer. 1. What do you call to a device used for applying heat to melt solder in attaching two metal parts? a. Desoldering Tool c. Soldering Iron b. Soldering Tools d. Soldering Iron Stand 2. When using a soldering iron, where is it placed? a. Desoldering Tool c. Soldering Iron b. Soldering Tools d. Soldering Iron Stand 3. It is used in removing soldered wires and components on printed circuit boards for troubleshooting and repair purposes. a. Desoldering Tool c. Soldering Iron b. Soldering Tools d. Soldering Iron Stand 4. Which equipment does NOT belong to the group? a. Desoldering Tool c. Soldering Iron b. Screwdriver d. Soldering Iron Stand 5. What is a handheld device that aids in accomplishing a task? a. Equipment c. Paraphernalia b. Device d. Tools
- 17. LONG NOSE is used for holding, bending, and stretching the lead of electronic component or connecting wires.
- 18. SIDE CUTTER is a wire-cutting pliers, though they are not used to grab or turn anything, but are used to cut wires.
- 19. WIRE STRIPPER is a pair of opposing blades much like scissors or wire cutters. The addition of a center notch makes it easier to cut the insulation without cutting the wire.
- 20. SHORT QUIZ #3 Directions: Choose the letter of the correct answer. 1. Mike wants to cut and peel the computer component's cable wires. Which instrument should he use? a. Anti-static mat c. Philips head screwdriver b. Hex driver d. Wire cutter 2. Which of the following tools has long, thin jaws that are used to grasp small or thin objects? a. Big Pliers c. Needle Nose Pliers b. Long Nose Pliers d. Small Pliers 3. What tool are not used to grab or turn anything, but are used to cut wires? a. Long Nose c. Short Nose b. Side Cutter d. Wire Cutter 4. Which of the following is a pair of opposing blades much like scissors or wire cutters? a. Long Nose c. Short Nose b. Side Cutter d. Wire Stripper 5. What is a handheld device that aids in accomplishing a task? a. Equipment c. Paraphernalia b. Device d. Tools
- 22. 12V MINI-DRILL is used to bore or drill holes in the printed circuit board (PCB) with sizes from 1/32)” – 1/16”. (6"x9”)
- 23. PORTABLE ELECTRIC DRILL is used for boring hole(s) in plastic or metal chassis with the used of drill bits having sizes from 1/6” to approximately 1/4”.
- 24. METAL FILES These are hand tools having a series of sharp, parallel ridges or teeth. Most files have a narrow, pointed tang at one end to which a handle can be fitted.
- 25. FLAT FILE is parallel in width and tapered in thickness; they are used for flat surfaces and edges.
- 26. HALF ROUND FILE is tapered in width and thickness, coming to a point, and is narrower than a standard half round and used for filing inside of rings.
- 27. ROUND FILE is also called rat-tail file which is gradually tapered and used for many tasks that require a round tool, such as enlarging round holes or cutting a scalloped edge.
- 29. UTILITY KNIFE is a common tool used in cutting various trades and crafts for a variety of purposes.
- 30. HACKSAW is used for cutting metals. Some have pistol grips which keep the hacksaw firm and easy to grip. The small hand-held hacksaws consist of a metal arch with a handle that fits around a narrow, rigid blade.
- 32. MAGNIFYING GLASS is a convex lens which is used to produce a magnified image of an object. The lens is usually mounted on a frame with a handle. Roger Bacon is the original inventor of the magnifying glass. A magnifying glass works by creating a magnified virtual image of an object behind the lens. Some magnifying glasses are foldable with built-in light.
- 33. PAINT BRUSH made of bristles set in handle, use for cleaning dirty parts of a circuit or an object.
- 34. SHORT QUIZ #4 Directions: Choose the letter of the correct answer. 1. What hand tools have a series of sharp, parallel ridges or teeth? a. Flat File c. Metal Files b. Half Round File d. Round File 2. Which of the following tools is parallel in width and tapered in thickness; they are used for flat surfaces and edges? a. Flat File c. Metal Files b. Half Round File d. Round File 3. What tool is tapered in width and thickness, coming to a point, and is narrower than a standard half round and used for filing inside of rings? a. Flat File c. Metal Files b. Half Round File d. Round File 4. Which of the following is used for many tasks that require a round tool, such as enlarging round holes or cutting a scalloped edge a. Flat File c. Metal Files b. Half Round File d. Round File 5. What is a handheld device that aids in accomplishing a task? a. Equipment c. Paraphernalia b. Device d. Tools
- 35. CONSUMER ELECTRONICS SERVICING Lesson 1 Electronic Equipment
- 36. Volt-Ohm- Milliammeter It is an equipment that combines three functions: as a VOLTMETER that measures both ac and dc voltages; an OHMMETER that measures resistance; and MILLIAMMETER that measures small amount of dc current.
- 37. In a circuit, • CURRENT is the flow of electrons. • VOLTAGE is the electrical potential difference between two points. • RESISTANCE is something that resists the flow of electrons. Current is measured in Amperes or A Voltage is measured in Volts or V Resistance is measured in Ohms or Ω
- 38. Volt-Ohm- Milliammeter As safety precautions in the maintenance of this instrument, the following should be observed: • Always rest the function switch at 250V AC if an OFF position is not available in the instrument. • For current and voltage measurements, always set the function switch in the correct setting which is a little higher than the expected current or voltage present in the circuit. • Place the instrument in a cool dry place, away from any magnetic devices, and free from vibrations.
- 40. Oscilloscope An oscilloscope (commonly abbreviated CRO, for cathode-ray oscilloscope, or scope) is a piece of electronic test equipment that allows signal voltages to be viewed, usually as a two- dimensional graph of one or more electrical potential differences (vertical axis) plotted as a function of time or of some other voltage (horizontal axis).
- 41. Signal Generator A signal generator is a device which produces simple wave forms.
- 42. PARTS OF A CIRCUIT Use the elements to create a diagram of a series and parallel circuit. PARALLEL CIRCUIT SERIES CIRCUIT
- 43. INSULATOR / CONDUCTOR ITEM INSULATOR / CONDUCTOR ITEM keys drinking glass aluminum foil styrofoam wooden spoon silverware brass doorknob rubber band plastic container copper wire CONDUCTORS & INSULATORS Complete the table by indicating if the item is an insulator or conductor
- 44. N S MAGNETIC FIELD N S N S N S N S Sketch the magnetic lines of force that would be produced if the magnets below were sprinkled with iron filings.
- 46. ELECTRIC DISCHARGE Number the steps in order to describe what happens when you shuffle your feet across a carpeted room, reach out to touch a metal doorknob, and get shocked. The doorknob's surface becomes positively charged. The extra electrons on your hand repel the electrons on the doorknob. The electric discharge occurs when electrons are drawn across the field. The friction of your shoes rubs electrons off the carpet. When you touch the doorknob, an electric field forms between it and your hand. Electrons are transferred and spread across the surface of your skin.
- 47. amount of charge that moves past a certain point each second continuous flow of electric charge SI unit of measurement for current material that does not transfer electric charge well potential difference that causes charges to move in a circuit measure of material's electrical resistance electric charges flow in alternating directions, repeatedly material that permits an electric current to flow easily electric charges move in one direction CURRENT ELECTRICITY Match the terms to the correct descriptions. ampere conductors current electricity direct current (DC) alternating current (AC) electric current resistance insulators voltage
- 48. OHM'S LAW Use the formula for finding voltage to calculate the problems below. A circuit has a resistance of 20 ohms and a current of 5 amperes flowing through it. What is the voltage across the circuit? V = 5 A * 20 Ω = 100 V Answer: The voltage across the circuit is 100 volts. A light bulb has a resistance of 50 ohms and is connected to a battery with a voltage of 12 volts. What is the current flowing through the light bulb? I = 12 V / 50 Ω = 0.24 A Answer: The current flowing through the light bulb is 0.24 amperes. A circuit has a voltage of 24 volts and a resistance of 6 ohms. What is the current flowing through the circuit? I = 24 V / 6 Ω = 4 A Answer: The current flowing through the circuit is 4 amperes.
- 49. energy source load switch wire 1. A(n) ( energy source / load ) pushes electric charges through a closed circuit. 2. The ( switch / wire ) connects the energy source to the load. 3. A(n) ( closed / open ) circuit has a break in it. 4. Electric circuits deliver energy to a(n) ( energy source / load ). 5. A(n) ( switch / wire ) opens and closes a circuit. PARTS OF A CIRCUIT Circle the current vocabulary word that makes the statement true, and label the diagram. A B C D A B C D
- 50. ELECTROMAGNET Answer each question below in the space provided. What is an electromagnet and how is it different from a permanent magnet? How can you increase the strength of an electromagnet, and what factors affect its strength? What are some practical applications of electromagnets in our daily lives, and how do they work? An electromagnet is a type of magnet that is created by passing an electric current through a wire coil. Unlike a permanent magnet, an electromagnet can be turned on and off by controlling the electric current. The strength of an electromagnet can be increased by changing the number of turns, current, or core material. Coil size, distance, and temperature also affect the strength. Answers will vary but may include: electric motors, doorbells, MRI machines, scrapyard cranes...
- 51. INSULATOR / CONDUCTOR ITEM INSULATOR / CONDUCTOR ITEM conductor keys insulator drinking glass conductor aluminum foil insulator styrofoam insulator wooden spoon conductor silverware conductor brass doorknob insulator rubber band insulator plastic container conductor copper wire CONDUCTORS & INSULATORS Complete the table by indicating if the item is an insulator or conductor
- 52. N S MAGNETIC FIELD N S N S Sketch the magnetic lines of force that would be produced if the magnets below were sprinkled with iron filings. N S N S
- 53. 4 3 6 1 5 2 ELECTRIC DISCHARGE Number the steps in order to describe what happens when you shuffle your feet across a carpeted room, reach out to touch a metal doorknob, and get shocked. The doorknob's surface becomes positively charged. The extra electrons on your hand repel the electrons on the doorknob. The electric discharge occurs when electrons are drawn across the field. The friction of your shoes rubs electrons off the carpet. When you touch the doorknob, an electric field forms between it and your hand. Electrons are transferred and spread across the surface of your skin.