logologo
Contact

HOMEABOUTSERVICESBLOGSBOOKSSHOPCONTACT

+977 9803661701support@nepatronix.orgLokanthali, Bhaktapur

© 2025 NepaTronix all rigths reserved

Controlling Fan Speed with Variable Resistance Using Potentiometer(STEAM Education)

  Back To Blogs

To understand the concept of variable resistance using a potentiometer and demonstrate its application in controlling the speed of Motor with Fan.

Project : 21


Controlling Fan Speed with Variable Resistance (Potentiometer)

If you want to post your project ,research or any document related to Ai,Ml,IoT,Robotics then please email us with your image ,details and your project at blog@nepatronix.org

Project Aim:

To understand the concept of variable resistance using a potentiometer and demonstrate its application in controlling the speed of Motor with Fan.


Components Used:

1.     Power Supply

2.     Resistors of 100Ω & 220Ω

3.     Motor with Fan

4.     NPN Transistor

5.     Potentiometer

6.     Connecting Wires

 

Circuit Diagram:

 

Connection Procedure:

Step 1: Placing Potentiometer in the KIT Board, Connect VCC terminal of the Potentiometer to Pin 69, OUTPUT terminal to Pin 67 and GND terminal to the Pin 65

Step 2: Connect the positive terminal of the power supply (pin 62) to one end of Resistor 220Ω (R2, Pin 3).

Step 3: Connect another end of the Resistor 220Ω (R2, Pin 4) to Positive terminal of Motor  (Pin 41).

Step 4: Connect Negative terminal of Motor (Pin 42) to Collector pin of NPN Transistor (Pin 31).

Step 5: Connect Emitter pin of NPN Transistor (Pin 29) to the negative terminal of Power Supply (Pin 59).

Step 6: Connect the Base of the NPN transistor (Pin 30) to one end of the Resistor 100Ω (Pin1).

Step 7: Connect the other end of the resistor 100Ω (Pin 2) to the output terminal of the potentiometer corresponding pin (Pin 68).

Step 8: Connect the VCC terminal of the potentiometer corresponding pin (Pin 70) to the positive terminal of the power supply (Pin 63).

Step 9: Connect the GND terminal of the potentiometer corresponding pin (Pin 66) to the negative terminal of the power supply (pin 60).

Step 10: Adjust the potentiometer's sliding contact to regulate the voltage at the base of the NPN transistor, controlling the speed of Motor Fan.

 

Explanation:

In this project, we'll explore how a potentiometer, a type of variable resistor with three terminals, regulates electric current flow. By adjusting the position of a sliding contact along a uniform resistance, the potentiometer acts as a voltage divider. The input voltage is distributed across the resistor's length, and the output voltage is the difference between the fixed and sliding contacts. Rotating the sliding arm changes the resistance, thereby altering the speed of Motor Fan. This allows us to achieve controlled output based on the potentiometer's position.


If you want to post your project ,research or any document related to Ai,Ml,IoT,Robotics then please email us with your image ,details and your project at blog@nepatronix.org




Total likes : 3

Comments







Read More Blogs!

Water level Indicator(STEAM Education)

To learn and create about water level indication using a simple circuit.


1.7k04

Transistor as a Switch(STEAM Education)

To understand how a transistor works as a switch.


1.7k04

Fire and Gas Monitoring System(IoT Project)

The Fire and Gas Monitoring System is designed to enhance safety in residential, commercial, and industrial environments. It continuously monitors for fire and gas leaks using a fire sensor and an MQ2 gas sensor. When a hazardous condition is detected, the system alerts the user via an LCD display and activates a buzzer. This system provides an effective way to quickly respond to fire outbreaks and gas leaks, potentially preventing damage and saving lives.


1.7k03

Wireless Power Transmission(STEAM Education)

To understand wireless energy transfer through mutual induction.


1.6k04