PWM Fan Controller

Step 2 PWM Fan Controller - LM35 Sensor Overview

The LM35 temperature sensor package being used is the TO-92, it is small enough for this project and is leaded so that we can easily connect it to some wires. It is also nice since we can extend it by simply plugging it into a 0.1 inch female wire harness. This is a Celsius device and since the output is 10mV per degree it is very simple to calculate the temperature. It is even nice and simple to directly view the temperature on a multimeter as can be seen in the video.