Design And Construction Of Temperature Control Automatic Switch

Project and Seminar Material For Electrical Electronics Engineering EEE

Design And Construction Of Temperature Control Automatic Switch


This project is titled design and construction of a temperature control automatic switch. It is designed to control electric appliances such as electric kettle, oven, incubator, or lamp through the variation of temperature range (0°C -100°C) which must be set by the user or operator. And this can be achieved by the use of temperature sensor known as THERMISTOR. This thermistor is a temperature control device with a high or low resistance value which can go high or low when the temperature is increased or reduced depending on the type.

In this project, 100C is used as a set temperature. And this device is design in such a way that when the set temperature of the device is reached, the relay of the device will automatically triggered and will maintain this stage until when the temperature of the sensor is dropped 97°C, and then it will return normally open stage in order to maintain that 100°C. And this automatic feature is controlled by a high current relay.

Chapter One

1.0 Introduction

1.1 Background Of The Project

A temperature controlled automatic switch controls appliances such as household electric kettle, which is usually has a heating element which is mounted at the bottom of a water tank through a heat conducting base. A conventional temperature control system typically uses a bi-metal temperature sensor (also known as a thermostat) to sense the temperature of the device, if it is used in electric kettle: the temperature of the water inside the kettle is measured and the steam when the water is boiled, and then cut off the electric power if the water temperature reaches the bi-metal action temperature point or if sufficient amount of steam is detected. Some modern temperature control switch uses more precise electronic temperature sensors such as the NTC (Negative Temperature Coefficient) resistors (thermistors), which are capable of sensing the temperature through a very wide range of points instead of just one point. In some cases, the control systems of the system is configured to take into account the temperature rising rate in addition to the absolute temperature value so that the control precision is greatly improved.

The idea behind the design and construction of this switch is to make available or alternative means providing safety and accuracy demand for switching household or industrial electrical appliances. This goes a long way in helping to curb the problem frequently encountered as a result of fire outbreak, burning of food, and inaccuracy found in measuring and maintaining temperature. That notwithstanding it makes it possible to have other means of heating food without constant temperature monitoring until when the required temperature will be achieved thereby creating time for the operator to be engaged on other works while the system is in operation.

Moreover, there are higher rate of fire accident cause by switching of devices. So there is every need that other means of safety should be made available for constant running of our electric equipments and gadgets and also to provide comfort to man. Hence, with the help of a Thermistor, which has come to solve the problem of fire accident and inaccuracy found in temperature measurement in Nigeria, a steady running and operation of our electric equipments and gadgets is guaranteed.

1.2 Objective Of The Study

The objective of this work is to design a device which will automatically control or switch ON and OFF electrical appliances by sensing the temperature of the environment or the device which it is controlling without the help of the user.

1.3 Significance Of The Project

Temperature controlled switch typically uses a temperature sensor (also known as a thermistor) to sense the temperature and then cut off the electric power if the temperature reaches the action temperature point. The temperature sensors, NTC (Negative Temperature Coefficient) resistors (thermistor), which is capable of sensing the water temperature through a very wide range of points.

1.4 Application Of The Project

Outside the culinary world, temperature control switch is used for a number of purposes.


A furnace can be used either to provide heat to a building or used to melt substances such as glass or metal for further processing. A blast furnace is a particular type of furnace generally associated with metal smelting (particularly steel manufacture) using refined coke or similar hot-burning substance as a fuel, with air pumped in under pressure to increase the temperature of the fire.


A kiln is a high-temperature temperature control electric kettles used in manufacturing to convert mineral feedstock (in the form of clay or calcium or aluminum rocks) into a glassier, more solid form. In the case of ceramic kilns, a shaped clay object is the final result, while cement kilns produce a substance called clinker that is crushed to make the final cement product.


An autoclave is an kettle-like device with features similar to a pressure cooker that allows the heating of aqueous solutions to higher temperatures than water’s boiling point in order to sterilize the contents of the autoclave.

Industrial Electric Kettle:

Industrial temperature control electric kettles are similar to their culinary equivalents and are used for a number of different applications that do not require the high temperatures of a kiln or furnace.

1.5 Scope Of The Project

Temperature controlled switch include a relay, power supply and a sensor for sensing the temperature of the environment or device, and a control unit being configured to collect data during the operation of the circuits. The control unit is also configured to execute a predetermined program and calculate a cut-off temperature based on the data and a predetermined target temperature. The control unit is further configured to turn off the electric power provided to the controlled appliances through a relay, when the temperature of the sensor is equal to or greater than the calculated cut-off temperature.

1.7 Limitation Of The Project

Though temperature controlled switch is designed to controlled appliances, but when the sensor is directly exposed to liquid (water) can damaged the sensor thereby causing the sensor to malfunctioning.

Design And Construction Of Temperature Control Automatic Switch

Project Material Download

3,000 Naira

The complete material will be sent to you in just 2 steps.

Quick & Simple…

Step One Purchase

Make payment of ₦3,000: through USSD Transfer, Bank Mobile App, ATM Transfer, or POS Transfer to:

Access Bank PlcAccount No.: 0811003731
Name: Samphina Academy
Account Type: Current

Or Click Here to pay with Debit Card

Click Here to pay with Debit Card ($15)
GHANA – Make Payment of 60 GHS to MTN MoMo, 0553978005, Douglas Osabutey 


Step Two Purchase

Send the following details through Text Message or WhatsApp Messenger | +234-8143831497

  • Payment Details 
  • Email Address 
  • Design And Construction Of Temperature Control Automatic Switch

The complete material will be sent to your email address after receiving your payment information | T & C Apply

  Contact Our Help Desk

You may also like:

⚠️ Need a different topic? Perform a quick search

Get A Complete Business Plan For Any Business In Nigeria

Business Plan for Businesses in Nigeria

  Business Plans in Nigeria

Design And Construction Of Temperature Control Automatic Switch


This research material “Design And Construction Of Temperature Control Automatic Switch” is for research purposes and should be used as a guide in developing your research project / seminar work. For no reason should you copy word for word (verbatim) as will not be liable for any who copied the material.

The aim of providing this material is to reduce the stress of moving from one school library to another all in the name of searching for research materials. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works. According to Austin Kleon “All creative work builds on what came before”. is only providing this material “Design And Construction Of Temperature Control Automatic Switch” as a reference for your research. The paper should be used as a guide or framework for your own paper. The contents of this paper should be able to help you in generating new ideas and thoughts for your own research. Use it as a guidance purpose only.

How to defend your research work

This is a general guide on how to defend your research work:

1. Prepare For Questions:

If you are preparing for questions that may be asked during your defense, then your answers will flow smoothly and effectively. This will prove your knowledge on the subject e.g “Design And Construction Of Temperature Control Automatic Switch“, and strengthening your argument. Ask friends and family, read your work for them to listen to your presentation, and write down questions. You may be lucky the panel will ask you those you have already prepared on.

2. Strong Summary:

Summarizing your chapters will help keep your audience focused because it is easy for a mind to drift, so providing summaries will ensure your panel will follow along, even if they lose focus for a brief moment. Visual aides, such as graphs and power-point presentations can be very helpful. If you are going to use these, make sure you will practice your presentation with them.

3. Be Confident in Your Research Work:

Not knowing your topic “Design And Construction Of Temperature Control Automatic Switch” inside out will cause you to struggle and ultimately fail with your defense. You need to know the subject from every angle to ensure you are fully prepared for any question that may come your way.

4. Conclusion:

Reinforce your findings to conclude your defense. The finale of your presentation should focus on proving the work that has been done. You may need to recap on what has changed and remained unchanged, if is necessary.

5 . Listen:

Before you get defensive or recite a particular answer, make sure you truly understand the question being asked. Being a good listener is an important quality, because providing an inaccurate or off-topic answer will also weaken the validity of your paper.

Samphina Academy

Samphina Academy is an Online Educational Resource Center that is aimed at providing students with quality information and materials to aid them in succeeding in their academic pursuit.