Automatic Room Temperature Control Circuit Diagram

The following image shows the circuit diagram of a simple temperature controlled switch using lm35 temperature sensor lm358 op amp and a 5v relay module.

Automatic room temperature control circuit diagram.

Circuit diagram of temperature controlled switch. For every 1 c of rise fall in temperature the output voltage of the sensor varies by 10mv. Circuit diagram temperature control. Download full size image fig.

2 1 block diagram of an automatic room temperature control. The system is the required temperature. Automatic room temperature control 1. The ratio arms r1 and r2 of the bridge are kept fixed say unity.

Digital temperature sensor circuit. 4 3 testing and analysis 62. Previously we have built temperature controlled leds circuit in which two leds were glowing according to the temperature now we are enhancing that circuit by using a relay and now we are going to control home ac appliances according to temperature this circuit will serve as automatic light switch which will trigger if temperature goes beyond a particular level 50 degree in this circuit. As you can see i have used a 5v relay module in the project.

The automatic room heater control system comprises of three 3 main subsystems. Problem statement todays world is affected by a phenomenon of global warming due to which the temperature is rising which makes the human lives uneasy. Temperature control circuits and tutorials auto fan automatic temperature control circuit enables precision control in radiant heating systems constant temperature circuit electronic thermostat heating system thermostat temperature controlled based on at89cx051 temperature controlled ovens temperature controller temperature monitor temperature programmer uses digital control. Automatic room temperature control.

Power supply unit the sensor unit and the control switching unit as shown in the system block diagram in fig. The temperature sensor lm35 is very accurate whose output is directly proportional to its surrounding temperature. At room temperature the output of the sensor would be a stable value. In ttl circuits also input transistor t 1 is a multi emitter transistor driving the phase splitter transistor t 2.

Download high res image 136kb download. With security system 25. It is based on the principle of wheatstone bridge. Related project using lm35.

Contents problem statement introduction methodology circuit diagram components applications conclusion references 2. Automatic dipper for vehicles. The controller has been designed and fabricated using the op amp ic 741 and a 1k thermistor as the temperature sensor. The input of the.