Introduction to multimeter by hazman9691

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									EXPERIMENT           :      1(A)

TITLE                :      Analogue Multimeter.

OBJECTIVES           :      At the end of this experiment, students should be able to

                            i)     Give basic knowledge about analogue multimeter and its
                                   funtions.

                            ii)    Give knowledge about the usage of analogue multimeter and
                                   its functions.

                            iii)   Learn how to read the scale on analogue multimeter.

EQUIPMENT            :      i)     Analogue Multimeter.

                            ii)    1.2 KΩ, 3.9KΩ.

                            iii)   Jumper / Crocodile Clip.

PROCEDURES           :

    A. Measuring Resistance
        1. The control unit was setted to a suitable scale range(x1000Ω).
        2. The me ter probes was held together and the control on the front of the meter which is
           usually labelled “0Ω ADJ” was adjusted until the pointers read zero.
        3. The probes was putted across the component as shown in Figure 1.2.
        4. The reading on the analogue multimeter was taken and it was writed on Table 1.1.
        5. Procedure 3 and 4 was repeated for other resistors.




                                               Figure 1.2
B. Measuring Voltage / Voltage Drop / Potential
 1. The circuit was connected as shown in Figure 1.3.
 2. The power supply was adjusted to 9V.
 3. A suitable scale range of voltage at the multimeter was selected.The highest rate of
    range was used.
 4. The red (positive +) voltmeter lead was connected to the point where the voltage
    needed to be measured.
 5. The black (negative -) voltmeter lead was connected to 0V,normally the negative
    terminal of the battery or power supply.
 6. The multimeter was connected parallel with measure voltage as shown in Figure 1.3.
 7. The reading on the analogue multimeter was taken and writed on Table 1.2.
 8. Procedure 3 until 7 was repeated for other resistor.




                                     Figure 1.3
C. Measuring Current
 1. The circuit was connected as shown in Figure 1.4.
 2. The power supply was adjusted to 9V.
 3. A suitable scale range of ammeter was choosed.The highest rate of range was used.
 4. R1 was disconnected.
 5. The positive test lead of multimeter was connected to the positive source of power
    supply and negative test lead of multimeter to the component leg R1 as shown in
    Figure 1.4.
 6. The reading on the analogue multimeter was taken and the results was writen on
    Table 1.3.
 7. Procedures 3 until 6 was repeated for other points.




                                     Figure 1.4
RESULTS:


1. Resistance value for Figure 1.2.




       Real Resistor Value            R1 = 1.2 KΩ     R2 = 3.9 KΩ




        Measurement (Ω)


                                          Table 1.1




2. Voltage Value for Figure 1.3.




             Resistor                 R1 = 1.2 KΩ     R2 = 3.9 KΩ




           Voltage (V)


                                          Table 1.2




3. Current Value for Figure 1.4.




             Resistor                 R1 = 1.2 KΩ     R2 = 3.9 KΩ




          Current (mA)


                                          Table 1.3

								
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