Trasformers

Transformer

This article is about the electrical device. For the media and toy franchise, see Transformers. For other uses, see Transformer (disambiguation).
Pole-mounted distribution transformer with center-tappedsecondary winding used to provide "split-phase" power for residential and light commercial service, which in North America is typically rated 120/240 V.[1][2]
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. A varying current in one coil of the transformer produces a varying magnetic field, which in turn induces a voltage in a second coil. Power can be transferred between the two coils through the magnetic field, without a metallic connection between the two circuits. Faraday's law of inductiondiscovered in 1831 described this effect. Transformers are used to increase or decrease the alternating voltages in electric power applications.
Since the invention of the first constant-potential transformer in 1885, transformers have become essential for the transmission,distribution, and utilization of alternating current electrical energy.[3] A wide range of transformer designs is encountered in electronic and electric power applications. Transformers range in size from RFtransformers less than a cubic centimeter in volume to units interconnecting the power grid weighing hundreds of tons.

Comments

Post a Comment

Popular posts from this blog

CA

Image
Edit Watch this page Read in another language Institute of Chartered Accountants of India The Institute of Chartered Accountants of India  ( ICAI ) is the national  professional accounting body  of  India . It was established on 1 July 1949 as a  statutory body  under the Chartered Accountants Act, 1949  enacted by the  Parliament  (acting as the provisional Parliament of India ) to regulate the profession of  Chartered Accountancy  in India. ICAI is the second largest professional Accounting & Finance body in the world. However, the rapid growth and autonomy of the ACCA in the early 2000s, soon made ICAI the third largest in terms of membership, the first being the ACCA. ICAI is the only licensing cum regulating body  of the  financial audit  and accountancy  profession in India. It recommends the  accounting standards  to be followed by companies in India to  National Advisor...
Read more

Telecommunication

Image
Edit Watch this page Read in another language Telecommunication Not to be confused with   Teleconnection . Earth station   at the satellite communication facility in Raisting, Bavaria, Germany Visualization from the   Opte Project   of the various routes through a portion of the Internet Telecommunication   is the   transmission   of signs, signals, messages, words, writings, images and sounds or information of any nature by   wire ,   radio , optical or other electromagnetic   systems. [1] [2] Telecommunication occurs when the exchange of   information   between communication   participants includes the use of   technology . It is transmitted either electrically over physical media, such as cables , or via   electromagnetic radiation . [3] [4] [5] [6] [7] [8]   Such transmission paths are often divided into   communication channels   which afford the advantages of mult...
Read more

Local aria network

LAN A conceptual diagram of a local area network. "LAN" redirects here. For other uses, see   LAN (disambiguation) . A   local area network   ( LAN ) is a   computer network   that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. [1]   By contrast, a   wide area network (WAN) not only covers a larger geographic distance, but also generally involves   leased telecommunication circuits . Ethernet   and   Wi-Fi   are the two most common technologies in use for local area networks. Historical technologies include   ARCNET , Token ring , and   AppleTalk . History Cabling Edit Early LAN cabling had generally been based on various grades of   coaxial cable . Shielded twisted pair   was used in IBM's   Token Ring LAN implementation, but in 1984,   StarLAN showed the potential of simple   unshielded twis...
Read more