Akshara Computer Center:Engineers Katta
Virtual Electronics Lab
Experiment-1 Understanding Basic Components
Purpose of the experiment:
To understand the use of potentiometer and calculations for voltage divider network.
To understand the use of potentiometer and calculations for voltage divider network.
Theory:
Current through a resistance I = V/R.
Voltage across resistance = IR
Current through a resistance I = V/R.
Voltage across resistance = IR
Explaination:
Observe the following circuit diagram which is self-explanatory. For the slider position of the potentiometers as shown in diagram current through resistance would be
I = 9/(12K+4K) = 0.5625 mA.
Due to this current voltage drop from point “d” to “a” in potentiometer B would be
V = I*R = 0.5625mA * 6K = 3.375V
Observe the following circuit diagram which is self-explanatory. For the slider position of the potentiometers as shown in diagram current through resistance would be
I = 9/(12K+4K) = 0.5625 mA.
Due to this current voltage drop from point “d” to “a” in potentiometer B would be
V = I*R = 0.5625mA * 6K = 3.375V
Activity:
Start the simulation at bottom of page and....
Start the simulation at bottom of page and....
- Change the positions of potentiometers as per the diagram and observe voltage is as per calculated voltage.
-
Try different positions; calculate theoretical voltage and measure actual voltage.
and note down the result in follwing table.
Observations:
| Pot-A Position | Pot-B Position | Calculated Voltage | Observed Voltage | Click to check |
| c | d | |||
| d | e | |||
| e | e |
Read the simulation circuit notes by kepping Annotation ON 
After that you may put it OFF 
For reading a particular note click on 
After that you may put it OFF
For reading a particular note click on