Transformer - Revision history

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← Older revision		Revision as of 00:41, 19 February 2025
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	File:Laminering_av_kärna.svg\|Transformer		File:Laminering_av_kärna.svg\|Transformer
	</gallery>		</gallery>
			== Transformer ==

			A '''transformer''' is a passive electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Transformers are used to increase or decrease the alternating voltages in electric power applications.

			== Principle of Operation ==

			Transformers operate on the principle of [[Faraday's law of induction]], which states that a change in magnetic flux can induce an electromotive force (EMF) in a coil. A transformer consists of two or more coils of wire, known as windings, which are wound around a common core. When an alternating current (AC) flows through the primary winding, it creates a varying magnetic field in the core, which induces a voltage in the secondary winding.

			== Construction ==

			Transformers are typically constructed with a laminated steel core to minimize [[eddy current]] losses. The windings are made of copper or aluminum wire and are insulated to prevent short circuits. The primary and secondary windings can be arranged in different configurations, such as step-up or step-down, depending on the desired voltage transformation.

			=== Core Types ===

			* '''Laminated Core''': Used in most transformers to reduce eddy current losses.
			* '''Toroidal Core''': Offers improved efficiency and reduced electromagnetic interference.
			* '''Air Core''': Used in high-frequency applications where core losses are significant.

			== Types of Transformers ==

			Transformers can be classified based on their application, construction, and function.

			=== Power Transformers ===

			Power transformers are used in [[electric power transmission]] and distribution systems to step up or step down voltage levels. They are designed to operate at high efficiency and are typically used in substations.

			=== Distribution Transformers ===

			Distribution transformers are used to provide the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customer.

			=== Isolation Transformers ===

			Isolation transformers are used to decouple two circuits, allowing AC power to be taken from one device and fed into another without electrically connecting the two circuits.

			=== Instrument Transformers ===

			Instrument transformers are used to measure high voltages and currents in power systems. They include [[current transformer]]s and [[voltage transformer]]s.

			== Applications ==

			Transformers are essential components in the transmission and distribution of electrical energy. They are used in a variety of applications, including:

			* [[Power generation]] and distribution
			* [[Audio transformer]]s in audio equipment
			* [[Pulse transformer]]s in digital circuits
			* [[Switch-mode power supply]]s

			== Related Pages ==

			* [[Electromagnetic induction]]
			* [[Electric power transmission]]
			* [[Current transformer]]
			* [[Voltage transformer]]

			{{Electricity}}
			{{Electronics}}

			[[Category:Electrical components]]
			[[Category:Electromagnetic devices]]

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	[[Category:Electrical engineering]]		[[Category:Electrical engineering]]
	[[Category:Electromagnetic devices]]		[[Category:Electromagnetic devices]]
			<gallery>
			File:Philips_N4422_-_power_supply_transformer-2098.jpg\|Transformer
			File:Transformer_Iron_Core.svg\|Transformer
			File:Transformer_under_load_(alternative_version).svg\|Transformer
			File:Transformer3d_col3.svg\|Transformer
			File:Transformer_Flux.svg\|Transformer
			File:Transformer_equivalent_circuit.svg\|Transformer
			File:Instrument_Transformer_LV_terminals.jpg\|Transformer
			File:Power_Transformer_Over-Excitation.gif\|Transformer
			File:Transformer_winding_formats.jpg\|Transformer
			File:Transformer.filament.agr.jpg\|Transformer
			File:EI-transformer_core_interleaved_with_flux_paths.png\|Transformer
			File:Laminering_av_kärna.svg\|Transformer
			</gallery>

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← Older revision		Revision as of 01:13, 10 February 2025
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	~~'''~~Transformer~~'''~~		== Transformer ==

	A '''~~[[Transformer]]~~''' is ~~a passive~~ electrical device that transfers electrical energy from one electrical circuit to another, or multiple circuits. A varying current in any one coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force across any other coils wound around the same core. Electrical energy can be transferred between the (possibly many) coils without a metallic connection between ~~the~~ two circuits. ~~Faraday's law of induction, discovered in 1831, describes~~ the ~~induced voltage effect~~ in ~~any coil due to changing magnetic flux encircled by the coil~~.		A '''transformer''' is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Transformers are used to increase or decrease the alternating voltages in electric power applications.

	== History ==		== History ==

	The transformer was ~~an important element~~ in the ~~development of the electricity supply industry~~. The first ~~designs were constructed~~ in the ~~early 1880s~~ by [[Lucien Gaulard]] and [[John Dixon Gibbs]] ~~in London and by~~ [[~~William Stanley~~ (~~inventor)\|William Stanley~~]] ~~in the United States. The design was improved upon by companies such as~~ [[~~Westinghouse Electric Corporation\|Westinghouse~~]], [[~~General Electric~~]] ~~and others throughout~~ the ~~late 19th and early 20th centuries~~.		The principle of the transformer was discovered in the early 19th century by [[Michael Faraday]], who demonstrated electromagnetic induction. The first practical transformer was developed in the late 19th century by [[Lucien Gaulard]] and [[John Dixon Gibbs]]. The [[ZBD team]] (]], [[]], and [[]]) further developed the transformer into a commercially viable product.

	== ~~Principle of operation~~ ==		== Operation ==

	Transformers operate on the principle of [[~~Electromagnetic induction\|electromagnetic~~ induction]], ~~as formulated by [[Michael Faraday]]~~. ~~The~~ transformer ~~is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's~~ coils ~~or "~~windings~~". Except for [[Air-core transformer\|air-core transformers]]~~, ~~the conductors are commonly wound~~ around a ~~single iron-rich~~ core, ~~or around separate but magnetically-coupled cores~~.		Transformers operate on the principle of [[Faraday's law of induction]], which states that a change in magnetic flux in a coil of wire will induce an electromotive force (EMF) in the coil. A transformer consists of two or more coils of wire, known as windings, wrapped around a common core. When an alternating current flows through the primary winding, it creates a varying magnetic field that induces a voltage in the secondary winding.

	== Types of ~~transformers~~ ==		== Types of Transformers ==

	~~There~~ are ~~several types of~~ transformers, ~~including [[Power transformer\|~~power transformers~~]], [[Distribution transformer\|distribution~~ transformers~~]], [[~~Isolation ~~transformer\|isolation~~ transformers~~]], [[Auto transformer\|auto transformers]]~~, and ~~[[Instrument transformer\|instrument transformers]]~~.		=== Power Transformers ===
			Power transformers are used in transmission networks to step up or step down voltage levels. They are designed to operate at high efficiency and are typically used in substations.

			=== Distribution Transformers ===
			Distribution transformers are used to provide the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customer.

			=== Instrument Transformers ===
			Instrument transformers are used to measure high voltages and currents in power systems. They include current transformers (CTs) and voltage transformers (VTs).

			=== Isolation Transformers ===
			Isolation transformers are used to decouple two circuits, allowing AC power to be taken from one device and fed into another without electrically connecting the two circuits.

			== Construction ==

			Transformers are constructed with a core made of laminated silicon steel to reduce energy losses due to eddy currents. The windings are made of copper or aluminum wire and are insulated to prevent short circuits.

	== Applications ==		== Applications ==

	Transformers are used in a wide range of applications, ~~including power generation,~~ power transmission~~, power~~ distribution~~, and power utilization~~.		Transformers are used in a wide range of applications, from small transformers in electronic devices to large transformers in power grids. They are essential for the transmission and distribution of electrical energy.

	~~== See also ==~~

			== Related Pages ==
			* [[Electromagnetic induction]]
	* [[Electric power transmission]]		* [[Electric power transmission]]
	* [[~~Electric power distribution]]~~		* [[Voltage regulation]]
	* [[Electrical substation]]
	* [[Electricity generation]]

	== References ==		== References ==
			* "Transformer." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, last visited October 2023.

	<~~references~~ />		== Gallery ==
			<gallery>
			File:Philips_N4422_-_power_supply_transformer-2098.jpg\|Power supply transformer
			File:Transformer_Iron_Core.svg\|Iron core of a transformer
			File:Transformer_under_load_(alternative_version).svg\|Transformer under load
			File:Transformer3d_col3.svg\|3D model of a transformer
			File:Transformer_Flux.svg\|Magnetic flux in a transformer
			File:Transformer_equivalent_circuit.svg\|Equivalent circuit of a transformer
			File:Instrument_Transformer_LV_terminals.jpg\|Instrument transformer terminals
			File:Power_Transformer_Over-Excitation.gif\|Over-excitation in a power transformer
			File:Transformer_winding_formats.jpg\|Different winding formats
			File:Transformer.filament.agr.jpg\|Filament transformer
			File:EI-transformer_core_interleaved_with_flux_paths.png\|EI transformer core

			File:Small_toroidal_transformer.jpg\|Small toroidal transformer
			File:Transformer-hightolow_smaller.jpg\|High to low voltage transformer
			File:transformer_min_stray_field_geometry.svg\|Minimized stray field geometry
			File:Drehstromtransformater_im_Schnitt_Hochspannung.jpg\|Three-phase transformer
			File:Substation_transfomer.jpg\|Substation transformer
			File:Melbourne_Terminal_Station.JPG\|Melbourne terminal station
			File:Camoflaged_Transformer_Langley_City.jpg\|Camouflaged transformer
			File:Transformer-Limestone-Generating-Station.JPG\|Limestone generating station transformer
			File:Vermogentransformator_1.GIF\|Power transformer
			File:Induction_experiment.png\|Induction experiment
			File:Induktionsapparat_hg.jpg\|Induction apparatus
			File:Faradays_transformer.png\|Faraday's transformer
			File:Trafo1885.jpg\|1885 transformer
			File:DBZ_trafo.jpg\|DBZ transformer
			File:ZBD_team.jpg\|ZBD team
			File:StanleyTransformer.png\|Stanley transformer
			File:Blachy_transformatorowe.jpg\|Transformer sheets
			</gallery>

	[[Category:Electrical engineering]]		[[Category:Electrical engineering]]
	~~[[Category:Power engineering]]~~		[[Category:Electromagnetic devices]]
	[[Category:Electromagnetic ~~components]]~~
	~~[[Category:19th-century inventions~~]]
	~~{{stub}}~~

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2024-02-25T15:40:07Z

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New page

'''Transformer'''

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

== History ==

The transformer was an important element in the development of the electricity supply industry. The first designs were constructed in the early 1880s by [[Lucien Gaulard]] and [[John Dixon Gibbs]] in London and by [[William Stanley (inventor)|William Stanley]] in the United States. The design was improved upon by companies such as [[Westinghouse Electric Corporation|Westinghouse]], [[General Electric]] and others throughout the late 19th and early 20th centuries.

== Principle of operation ==

Transformers operate on the principle of [[Electromagnetic induction|electromagnetic induction]], as formulated by [[Michael Faraday]]. The transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils or "windings". Except for [[Air-core transformer|air-core transformers]], the conductors are commonly wound around a single iron-rich core, or around separate but magnetically-coupled cores.

== Types of transformers ==

There are several types of transformers, including [[Power transformer|power transformers]], [[Distribution transformer|distribution transformers]], [[Isolation transformer|isolation transformers]], [[Auto transformer|auto transformers]], and [[Instrument transformer|instrument transformers]].

== Applications ==

Transformers are used in a wide range of applications, including power generation, power transmission, power distribution, and power utilization.

== See also ==

* [[Electric power transmission]]
* [[Electric power distribution]]
* [[Electrical substation]]
* [[Electricity generation]]

== References ==

<references />

[[Category:Electrical engineering]]
[[Category:Power engineering]]
[[Category:Electromagnetic components]]
[[Category:19th-century inventions]]
{{stub}}

← Older revision		Revision as of 11:02, 18 February 2025
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	[[Category:Electrical engineering]]		[[Category:Electrical engineering]]
	[[Category:Electromagnetic devices]]		[[Category:Electromagnetic devices]]
			<gallery>
			File:Philips_N4422_-_power_supply_transformer-2098.jpg\|Transformer
			File:Transformer_Iron_Core.svg\|Transformer
			File:Transformer_under_load_(alternative_version).svg\|Transformer
			File:Transformer3d_col3.svg\|Transformer
			File:Transformer_Flux.svg\|Transformer
			File:Transformer_equivalent_circuit.svg\|Transformer
			File:Instrument_Transformer_LV_terminals.jpg\|Transformer
			File:Power_Transformer_Over-Excitation.gif\|Transformer
			File:Transformer_winding_formats.jpg\|Transformer
			File:Transformer.filament.agr.jpg\|Transformer
			File:EI-transformer_core_interleaved_with_flux_paths.png\|Transformer
			File:Laminering_av_kärna.svg\|Transformer
			</gallery>