[Proper] Potentiometer Connection and Circuit Diagram


Today we are going to see the Proper Potentiometer Connection. We will see the connection of Potentiometer for different purposes such as voltage divider, brightness control of light.

The potentiometer is a three terminal device. First, let's identify the terminals of the potentiometer.

Potentiometer Circuit, Circuit diagram of Potentiometer


As you see in the above figure the potentiometer has a total of three terminals. The middle terminal is connected to the slider. Here the first terminal is taken as Vcc but you can take the last terminal as Vcc. So can interchange the two end terminals but the middle terminal is always fixed it should be taken as output.
Now let's see the connections of the potentiometer.




Circuit Diagram for Voltage dividing using Potentiometer


We can divide voltage using the potentiometer. The circuit diagram is given below.

voltage divider circuit using potentiometer


In the above circuit diagram, you can see there is only one resistor in the potentiometer but the slider divided the resistor into two. The upper part of the slider is taken as R1 and the lower part of the slider is taken as R2.

The equation of voltage divider rule is,



So according to the above equation when we change the value of resistance by changing the slider position the output voltage will be changed.


Potentiometer connection for Voltage Dividing


Here you can see the connection of potentiometer for voltage dividing.

Connection of Potentiometer for Voltage Dividing


Potentiometer Connection for Light Brightness Control


Here the connection diagram for controlling the brightness of a LED is given below.

Potentiometer Connection, Connection of potentiometer


Component Used,

  • LM317
  • 10K POT
  • 320 Ohm resistor
  • 12V LED
  • 12V battery




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[Proper] Potentiometer Connection and Circuit Diagram [Proper] Potentiometer Connection and Circuit Diagram Reviewed by Author on 11:09 Rating: 5
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