D'Arsonval Galvanometer

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NDJ 30003 – ELECTRONIC INSTRUMENTATION

 

 

 

LAB 1 

 

D’ARSONVAL GALVANOMETER

 

 

Prepared by:

Ts. Ahmad Syahir Bin Ahmad Bakhit

 

 

 

 

 

 

 

 

                Name                           : MOHAMMAD SAIFIQUL AIMAN BIN MOHAMMAD ALI

 

                Matrix No.                  : 192011145

 

               Program                      : R2427 – MICROELECTTRONIC ENGINEERING

 

                Date                             : 9 SEP 2021

 






RESULT

 

 

N

R1 (Ω)

VFS

(V)

Rs (Ω)

R2 (Ω)

 

Rg Ω

 

Mean of Rg

K

(A/div)

Mean of K

Meas.

Calc.

%e

30

 

510

 

15.64

10

 460

 1.2

 1.0869

10.4

 1.1243

0.53m

0.568m

5

410

 1.2195

 1.599

 0.56m

2

320

1.1875

 1.0526

 0.62m

 

220

 

 6.67

10

200

 1

 20

 0.529m

5

180

 1.11

 8.108

 0.55m

2

140

1.142

 5.08

 0.618m






MULTISIM RESULT

 

R2

MULTISIM RESULT

460



410



320



200



180



140



 

 




CALCULATION RESULT


RESULT

CALCULATION

Rg  RESULT

 


%e RESULT

 

 

Rg mean RESULT

 


K RESULT

 


K mean RESULT

 

 




Q1

10K LOAD RESISTANCE



100K LOAD RESISTANCE



 

Observations that can be made between the both diagrams are voltage value increases as the resistance increases. An example can be observed in the 10k ohm and 100k ohm diagrams, for which the 10k ohm voltage is lower than the 100k ohm and the voltage that passing through resistance is getting larger. This shows that voltage value increases as the resistance increases because of higher resistance affect voltage that are passing through the resistance itself.

 


Q2

 

1M0hm internal resistance

 

 

 

10M0hm internal resistance



 

100M0hm internal resistance



 

Observations that can be made between the 3 diagrams above the internal resistance 1M, 10M and 100M. The voltage value on the voltmeter increases due to the electric current so that the strength of the magnetic field also increases to move the meter needle.








CONCLUSION


Galvanometer is like ammeter, but the difference is that ammeter is used to measure the current and galvanometer is used to detect the presence of current just.

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