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Analog multimeter and ohmmeter
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Electronic Multi-Tester

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Basic Electricity

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Electronic Multi-Tester

  1. 1. CHAPTER 2 Electronic test Instrument
  2. 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. 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. 4. TWO GENERAL TYPES OF MULTI-TESTER 1. ANALOG MULTI-TESTER 2. DIGITAL MULTI-TESTER
  5. 5. MULTI TESTER ANALOG MULTI-TESTER – Has a moving coil assembly which is characterized by a needle pointer.
  6. 6. ANALOG MULTI-TESTER POINTER SCALE ZERO POINTER OHM ADJUSTER ADJUSTER SELECTOR
  7. 7. ALTERNATING CURRENT RESISTANCE DIRECT CURRENT DIRECT CURRENT AMPERE
  8. 8. DIGITAL MULTI TESTER PIN/PROBE
  9. 9. GAME PLAY
  10. 10. MATERIALS 1. ANALOG/DIGITAL Multi-Tester 2. COMPUTER POWER SUPPLY 3. BATTERY CHARGERS/BATTERY 4. AUTOMATIC VOLTAGE REGULATOR 5. RESISTORS
  11. 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. 12. GROUP TEAMS  APL  LEA  SARAH  BAMBOO
  13. 13. TEAM SCORES TEAMS RESITANCE ALTERNATING CURRENT DIRECT CURRENT TOTAL RANK APL 0 LEA 0 SARAH 0 BAMBOO 1
  14. 14. OTHER TYPES OF TESTER  GALVANOMETER Are the basic components of many power and current meters.
  15. 15. WHEATSTONE BRIDGE Is a resistance measuring device. This particular instrument measures resistance values from 1Ohms to 11.01 Ohms
  16. 16. OSCILLOSCOPE  A unique instrument designed to graphically time varying voltage and current values.
  17. 17. WATTMETER  A meter that indicates real power.
  18. 18. THERMOCOUPLE AMMETER  Consist of DC moving coil meter connected across the junction of a thermocouple.
  19. 19. ELECTROSTATIC VOLTMETER  Constructed in the form a variable capacitor consisting of a pair of reading and stationary plate.
  20. 20. HOTWIRE AMMETER  It consist of a spring connected to a resistance wire in which current passes through.

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