Basic Electricity

1. CHAPTER 2
Electronic test
Instrument

2. OBJECTIVES
1. Identify the different types of
electronic Test Instruments;
2. Describe each type of electronic Test
Instrument.
3. Demonstrate on how to properly use
each electronic instrument.

3. MULTI-TESTER
 The multi-tester or Multi-meter is a
sometimes called VOM(Voltmeter,
Ohmmeter, Milliammeter) is the best
instrument that can measure voltage,
resistance, and current.

4. TWO GENERAL TYPES OF
MULTI-TESTER
1. ANALOG MULTI-TESTER
2. DIGITAL MULTI-TESTER

5. MULTI TESTER
ANALOG MULTI-TESTER –
Has a moving coil assembly
which is characterized by a
needle pointer.

6. ANALOG MULTI-TESTER
POINTER SCALE
ZERO POINTER OHM ADJUSTER
ADJUSTER
SELECTOR

7. ALTERNATING CURRENT
RESISTANCE
DIRECT CURRENT
DIRECT CURRENT
AMPERE

8. DIGITAL MULTI TESTER
PIN/PROBE

9. GAME PLAY

10. MATERIALS
1. ANALOG/DIGITAL Multi-Tester
2. COMPUTER POWER SUPPLY
3. BATTERY CHARGERS/BATTERY
4. AUTOMATIC VOLTAGE REGULATOR
5. RESISTORS

11. MECHANICS
 There are 4 game activities namely, Reading of
Resistance, Alternating Current, Direct Current and
Milliampere.
 Each game activity has a corresponding points.
 Each group should select 3 participants per game
activity.
 The highest group who will earned the highest total
points is free to leave the room after the class as a
reward, While the group who earned the lowest will
clean and arrange the room as a punishment.

12. GROUP TEAMS
 APL
 LEA
 SARAH
 BAMBOO

13. TEAM SCORES
TEAMS RESITANCE ALTERNATING
CURRENT
DIRECT
CURRENT
TOTAL RANK
APL 0
LEA 0
SARAH 0
BAMBOO 1

14. OTHER TYPES OF TESTER
 GALVANOMETER
Are the basic components of many
power and current meters.

15. WHEATSTONE BRIDGE
Is a resistance
measuring device.
This particular
instrument
measures resistance
values from 1Ohms
to 11.01 Ohms

16. OSCILLOSCOPE
 A unique instrument designed to
graphically time varying voltage and
current values.

17. WATTMETER
 A meter that
indicates real
power.

18. THERMOCOUPLE
AMMETER
 Consist of DC moving coil meter
connected across the junction of a
thermocouple.

19. ELECTROSTATIC
VOLTMETER
 Constructed
in the form
a variable
capacitor
consisting
of a pair of
reading and
stationary
plate.

20. HOTWIRE AMMETER
 It consist of a
spring
connected to a
resistance wire
in which current
passes through.