electronics concept

1. MODULE 4_ DIAGNOSE & TROUBLESHOOT COMPUTER
SYSTEM (DT)
LESSON 2_ DIAGNOSE & CONFIGURE COMPUTER SYSTEMS

2. Basic Electrical Terms
Electricity
is define as the flow of electron or electric
current. It is an invisible form of energy that can
be transform into other form of energy like heat
light and mechanical.

3. Basic Electrical Terms
Electron
is the negatively charge component of an
atom. It has the ability to flow.
Proton
is the positively charge component of an
atom. It had the ability to attract electron.

4. Basic Electrical Terms
Current
 Same as electricity.
 Can be measure in Ampere (I)
Voltage
 amount of pulling force that makes the
electron flow
 Also known as potential difference or EMF
 Can be measured in volt (V)

5. Basic Electrical Terms
Resistance
define as the opposition to the flow of current.
The amount of resistance can be measure in
ohms (Ω).

6. Basic Electrical Terms
Conductors
are materials that easily allow the flow of current,
or it has a low resistance to current flow. (e.g. Al,
Au, Ag, Cu, Fe.
Insulators
are materials that do not easily allow the flow of
current, or it has a high resistance to current flow.
(e.g. rubber, plastic, paper)

7. Types of Current
Direct Current
 the flow of electric charge is only in one
direction.
 This type of electricity is produced by batteries,
static, and lightning.
 In the circuit, the current flows at a specific,
constant voltage.

8. Types of Current
Alternating Current
 the movement of electric charge periodically
reverses direction.
 This type of electricity is produced or generated
by AC generators commonly from a hydro
electric plant.
 Delivered through a power transmission lines.
AC current can be reduced through the use of
power transformer to suite for its application.

9. Components of Circuit
 Load - commonly represented by a bulb or any
electrical component that consumes electricity.
 Supply - Commonly represented by a cell or a
battery
 Switch - an electrical device that opens or
closed a circuit.

10. A simple circuit

11. Types of Circuit
 Open Circuit - a type
of circuit that has an
open path for current
to flow. It means that
current cannot flow in
open circuit.
 Closed Circuit - a
type of circuit that has
a closed path for
current to flow. It
means that current
can flow in a closed
circuit.

12. Components of Circuit
 Load - commonly represented by a bulb or any
electrical component that consumes electricity.
 Supply - Commonly represented by a cell or a
battery
 Switch - an electrical device that opens or
closed a circuit.

13. MODULE 4_ DIAGNOSE & TROUBLESHOOT COMPUTER
SYSTEM (DT)
LESSON 2_ DIAGNOSE & CONFIGURE COMPUTER SYSTEMS