Thermal Protection And Electrical Power Essay

Thermal Protection And Electrical Power Essay

Length: 744 words (2.1 double-spaced pages)

Rating: Better Essays

Open Document

Essay Preview

Thermal protection is a method of detecting over-temperature conditions and disconnecting the electrical power. This usually used to prevent fires or damage to electronics power supplies and equipment which may arise from the high temperatures.
Temperature in power supplies rises due to both environmental factors as well as heat generated by the components themselves. There is heat from semiconductors such as transistors, ICs, switching devices, from transformers, inductors and resistors.
The amount of heat varies from one power supply to another and may be a factor of design, power capacity and load. Natural convention is adequate for removing the heat away from smaller power supplies and equipment; however, forced cooling is required for larger supplies.
Thermal problems become an issue when the power supply is placed in an enclosure with no airflow or in self heating equipment enclosure. Overheating will also occur if intake and exhaust vents are in the wrong places. This causes the warm air to continue getting hot due to reheating without being exhausted to the exterior as required.
The best way to ensure heat is dissipated properly is to locate the intake at the bottom and the exhaust fans at the top. In addition, ensure the fan rating is adequate for the enclosure.

When the devices are operated within their safe limits, the power supply delivers the intended power, however, if this is the thermal capacities are exceeded, the components starts deteriorating and eventually fails if operated under excess heat for long. The advanced supplies and electronic equipment have a form of temperature control in which the equipment shuts down when the component temperature exceeds the safe limit.
Devices used to protect against over...


... middle of paper ...


... such that the input is reduced until the temperature comes down. In some designs, the increased temperature increases the resistance such that the current in order to reduce the temperature. In this condition, the circuit may operate at lower power as designed and its output will reduce accordingly. This happens in computer systems and leads to reduced performance such as slow operations.
Some voltage regulators such as LM 117, LM 137,LM 123 and others have inbuilt thermal protection which monitors the IC temperature and shuts it down when it exceeds the safe level. Most of these will turn off at temperatures above 170 degrees Celsius, hence preventing damage that may result from the high temperatures
Thermal protection ensures that components such as ICs, regulators are not destroyed by overloads, or over-temperature conditions arising from inadequate het sinking.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Pros and Cons of the Different Types of Power Plants: Hydroelectric, Thermal and Nuclear Power Plants

- In developed and developing countries, sustainable energy source is the most important subject. There are many different methods of energy production and consumption. Using the cheap, abundant and clean energy sources for generating the electricity is the basic idea of production. Electrical energy is generated from different kinds of power plants. These plants can be put into three groups; hydroelectric power plants, thermal power plants and nuclear power plants. Hydroelectric power plants are used the potential energy of water....   [tags: energy source, sustainable energy, power plants]

Better Essays
1218 words (3.5 pages)

Electrical Engineering Manuscript Essay

- The authors wish to acknowledge the reviewers for their constructive and valuable comments to improve the manuscript. We tried our best to address their comments in the revised manuscript. Responses to the reviewers’ comments are presented in the following table: Reviewer #1 Reviewer comments Revisions The English writing of the paper can be improved. The authors attempted to improve the English level of the manuscript. Afterwards, the manuscript was sent to a professional proofreader to correct the possible mistakes....   [tags: writing imporvement]

Free Essays
652 words (1.9 pages)

Electrical Power, Electrical Energy, And Programing Electrical Systems Essay example

- What is electricity. The term electricity means the force that makes electronics move from place to another. This is similar to the meaning of the engine as the force that moves a car or any mechanical machine. However, here it is explained as the effect not the physical movement. Throughout the ages, scientists have realized that electricity’s behavior can be predictable pattern when subjected to given conditions (Naiah & Kamakshaiah, 1995). What Electrical engineering. Electrical engineering is a field that deals with the applications the technology of electricity, such as generating, distributing electrical energy, and programing electrical systems....   [tags: Electrical engineering, Electricity, Wind power]

Better Essays
1295 words (3.7 pages)

Electrical And Environmental Engineering : Electrical Engineering Essay

- Electrical engineering, I believe, is the only field where one’s work becomes the most instrumental part of one’s mundane activity and life, and the output produced stays forever to credit. My perception is that, this field requires a lot of patience, perseverance and management skills in order to be successful. The connection that electrical engineering offered between me and this world is the fact that you can become a person who can impact so many lives. This made me pursue Electrical Engineering....   [tags: Electrical engineering, Electricity]

Better Essays
1040 words (3 pages)

The Alternative Sources Of Electrical Power Essay

- The world in which we live depends heavily on electricity. Our cellphones, laptops, lights, televisions, and now even some of our cars are just a few examples of the wide applications of electrical energy. For sometime we have produced this form of energy through the burning of fossil fuels to create steam and in turn create a flow of electrons by spinning an electromagnet. While the burning of these fossil fuels is effective and can be quite cost efficient, fossil fuels are a finite resource and their combustion releases a great deal of carbon dioxide into our atmosphere....   [tags: Nuclear power, Nuclear fission]

Better Essays
1231 words (3.5 pages)

The Difference of Electrical and Gasline Transporation Essay

- I. INTRODUCTION There is currently a challenge that the world is facing; the need for a convenient and affordable form of transportation that does not contribute to the destruction of the environment. There are many obstacles that make this a difficult task to achieve. Hybrid cars do use electricity as one of their main sources of energy, however the batteries used in these cars do not store enough charge to ensure the car’s ability to travel great distances. Because of this, hybrid vehicles have a second engine which runs on gasoline....   [tags: environment, electrical, energy, procedures]

Better Essays
1415 words (4 pages)

Thermal Constraints Of Power Equipment And Line Circuits Essay

- 3.2 Thermal constraints Thermal constraints in existing power equipment and line circuits are inhibitive of their optimum power transfer capability. When the current that flows through power equipment exceeds its thermal rating, it over-heats and its insulation deteriorate precipitously. This reduces the equipment lifetime, leading to more potential faults. If too much current passes through the overhead line circuit, the conductor would lengthen, increasing the sag with reduced clearance to the ground....   [tags: Renewable energy, Wind power, Sustainable energy]

Better Essays
1053 words (3 pages)

Thermal Phenomena and Temperature Behavior of Biological Bodies Project Essay

- With the advancement of clinical medicine in thermal disease diagnostics, it is quite important to understand the thermal phenomena and temperature behavior of biological bodies. To understand the concepts is only possible with investigating the temperature distribution in biological tissue. However, the precise thermal analysis of biological tissue is difficult, due to the fact that not only the tissue is heterogeneous and anisotropic, but also the mechanisms maintain body temperature, such as blood flow and metabolic heat generation....   [tags: thermal disease diagnositcs, ]

Better Essays
639 words (1.8 pages)

Construction Of A Thermal Power Station Essay

- The denomination of the power plant is Station Janaeletrik Sultan Salahuddin Abdul Aziz (SJSSAA) or Kapar Energy Ventures. It is located 56km west of Kuala Lumpur , off the coastal road between Port Klang and Kuala Selangor facing the straits of Malacca. SJSSAA is the 2nd most largest immense power plant in Malaysia with an generating capacity of 2420MW. The only power station in Malaysia with triple fuel firing capability (gas, oil and coal). Orchestrating for the potency plant commenced in tardy 1970 by TNB while the construction work commenced in 1981....   [tags: Coal, Boiler, Petroleum, Combined cycle]

Better Essays
1633 words (4.7 pages)

Electrical Engineering : A Building Science Essay examples

- Electrical engineering is a building science that applies power in an innovative and down to earth way. Outside of the United States, electrical engineering is thought to be centered on extensive scale frameworks, for example, force and hardware building to be centered on little scale frameworks, for example, PCs. An option refinement alludes to electrical engineering as the study and utilization of power to transmit vitality and hardware building as the study and use of power to process frameworks....   [tags: Electrical engineering, Electronic engineering]

Better Essays
1975 words (5.6 pages)