2. EXPECTATIONS
At the end of the lesson, you should be able to:
1. identify electronic components;
2. calculate resistor value; and
3. appreciate the essential functions of electronic components to
computer systems.
3. BRIEF INTRODUCTION
This lesson covers the knowledge and understanding on
the preparation of electrical wiring/electronics circuits in
Computer Systems Servicing. It contains learning activities
on Computer Systems Servicing for you to accomplish.
5. ELECTRONIC SCHEMATIC
Electronic schematics are like recipes for electronics.
They tell you what ingredients to use and how to mix
the ingredients. But instead of using text to explain the
recipe, a drawing is used.
6. ELECTRONIC SCHEMATIC
A schematic diagram shows you which
components are used and how they are
connected.
They consist of electronic symbols that
represent each of the components used.
The symbols are connected with lines that
show you how to connect the components.
7. Types of Electronic Components
Resistors
• Is the most common electronic component. Its principal job within an electrical or
electronic circuit is to “resist” or impede the flow of electrons.
• Resistance is measured in ohms which is proposed by Georg Simon Ohm,
represented by the Greek Symbol Omega (Ω).
• One distinct feature of this resistance is determining its value using the set of
color bands. Colored painted bands produce a system of identification generally
known as Resistors Color Code.
10. Types of Electronic Components
Diode
• Specialized electronic component with two electrodes called the anode
and the cathode. Allowing the flow of current in one direction only.
•The connections are named ANODE and CATHODE
11. Types of Electronic Components
Transistor
• A component with 3 leads (connections)
• Its function in a circuit is as an electronic switch, or as an amplifier
• Two types of transistors are available:
• NPN
• PNP
• The connections are named:
• COLLECTOR (C)
• BASE (B)
• EMITTER (E)
