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transformer

Electrical device that transfers energy through electromagnetic induction from one circuit to another circuit

Entitypassive electronic componentQ11658

Also known as electric transformer · trafo · electrical transformer

Instance of: passive electronic component

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil.

Overview

All data

63 statements · 19% with external sources · numbers in brackets are citations

Different from: Transformator criterion used: descriptive page and disambiguation page have to be in different items
Transformer
Transformer criterion used: descriptive page and disambiguation page have to be in different items
Members / parts: coil
magnetic core
Has use: galvanic isolation
voltage converter uses: alternating current
Studied by: canonical correlation analysis
electrical engineering
materials science
OpenStreetMap tag: power=transformer
Discovered: 1831
1
Sources
1.“A Brief History of The Development of Classical Electrodynamics”hep.physics.illinois.edu/home/serrede/P435/Lecture_Notes/A_Brief_History_of_Electromagnetism.pdfRetrieved 2026-08-06
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Discovered by: Michael Faraday(1831)
1
Sources
1.“Archives Biographies: Michael Faraday”theiet.org/resources/library/archives/biographies/faraday.cfmRetrieved 2026-08-06
View statement on Wikidata ↗
Uses: Electromagnetic induction

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43 identifiers linking transformer across the web's reference databases

Data quality

statements

19%

externally sourced

Source last edited October 10, 2026. AIDB refreshes this page daily.

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AIDB. (2026). transformer (Q11658). Retrieved from https://aidb.si/e/transformer-Q11658