Automatic Temperature Controlled Fan

Schematic of the temperature controlled fan circuit.

Automatic temperature controlled fan. Here is a circuit through which the speed of a fan can be linearly controlled automatically depending on the room temperature. Iliving 18 wall mounted exhaust fan automatic shutter variable speed vent fan for home attic shed or garage ventilation 1736 cfm 2600 sqf coverage area 4 6 out of 5 stars 240 130 69 130. Alternatively the same circuit can be used for automatic temperature controlled ac power control. While performance is not quite as good as other op amp implementations it is a very interesting experiment.

This is perhaps the simplest implementation of a temperature controlled fan. Based on the temperature probe s reading the fan will tweak the intake of oxygen to help maintain your target temperature. Circuit description the circuit of automatic temperature controlled fan is build around temperature transducer ad590 followed by operational amplifier lm324. When connected to a small electrical control box and a temperature probe the fan moderates oxygen flow to match the temperature you set.

There are some input switches by that user can set the temperature. This temperature controlled fan circuit is highly efficient as it uses thyristors for power control. The output of transducer is given to pin 2 of ic 2 lm324. Its exceptional fan system sits over the air vents and maintains the temperature by feeding oxygen to the charcoal thereby adjusting its oscillation to give you precise temperature control.

Ad590 is a temperature transducer change temperature into corresponding voltage. You can seamlessly use the device to monitor three temperatures simultaneously. Working principle of automatic fan controller this is simply a fan that is automatically on and off based on the temperature set by the user. Temperature controlled dc fan using thermistor automation is good so long as you know exactly where to put the machine in this tutorial we are making a temperature controlled dc fan using thermistor as it starts above the preset level of temperature and stops when the temperature return to normal condition.

Automatic temperature controlled fan project using arduino in this arduino based project we are going to control dc fan speed according to the room temperature and show these parameter changes on a 16x2 lcd display. It is accomplished by the data communications between arduino lcd dht11 sensor module and dc fan that is controlled by using pwm. It requires only two transistors a few resistors thermistor and small 12v fan.