Paper Title
TEMPERATURE BASED FAN CONTROL
Abstract
The Temperature Controlled DC Fan using Op-amp allows users to adjust the fan speed automatically with the change in temperature with the help of thermistor sensor due to which it can save the time and the efforts that is usually done manually which could then work automatically and effective for humans. Over the last decade, advances in digital electronics have made computers smaller, cheaper and faster. This project control the fan based on variation of temperature. Here op-amp is used as voltage comparator, where it compares voltage with the help of thermistor. It is also a part of home automation applications where the fan will gradually increase the speed if the temperature of the environment increases. Here the component used as the temperature sensor is known as Thermistor. There are two types of Thermistor depending on sign k. Firstly k is Negative Temperature Coefficient(NTC). The NTC thermistor works by decreasing the resistance will increase the temperature.Secondly,k is Positive Temperature Coefficient (PTC). PTC thermistor works by increasing the resistance will increase the temperature. This project will only concentrate on NTC type thermistor. After some trials, the result of the experimentation can be concluded.
Keywords - NTC Thermistor, Temperature, Voltage Comparator, Automation, Dc Fan, Cooling.