Editing Transformer (section)

==Applications==
[[File:Transformer-Limestone-Generating-Station.JPG|thumb|Transformer at the [[Limestone Generating Station]] in [[Manitoba]], Canada]]
{{main|Transformer types}}

Various specific electrical application designs require a variety of [[transformer types]]. Although they all share the basic characteristic transformer principles, they are customized in construction or electrical properties for certain installation requirements or circuit conditions.

In [[electric power transmission]], transformers allow transmission of electric power at high voltages, which reduces the loss due to heating of the wires. This allows generating plants to be located economically at a distance from electrical consumers.<ref name="Heathcote1998-1">{{harvnb|Heathcote|1998|p=1}}</ref> All but a tiny fraction of the world's electrical power has passed through a series of transformers by the time it reaches the consumer.<ref name="nailen"/>

In many electronic devices, a transformer is used to convert voltage from the distribution wiring to convenient values for the circuit requirements, either directly at the power line frequency or through a [[switch mode power supply]].

Signal and audio transformers are used to couple stages of [[amplifier]]s and to match devices such as [[microphone]]s and [[record player]]s to the input of amplifiers. Audio transformers allowed [[telephone]] circuits to carry on a [[Hybrid coil|two-way conversation]] over a single pair of wires. A [[balun]] transformer converts a signal that is referenced to ground to a signal that has [[Balanced line|balanced voltages to ground]], such as between external cables and internal circuits. Isolation transformers prevent leakage of current into the secondary circuit and are used in medical equipment and at construction sites. Resonant transformers are used for coupling between stages of radio receivers, or in high-voltage Tesla coils.

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[[File:Vermogentransformator 1.GIF|upright=2|thumb|center|Schematic of a large oil-filled power transformer {{ubl|1. Tank|2. Lid|3. Conservator tank|4. Oil level indicator|5. Buchholz relay for detecting gas bubbles after an internal fault|6. Piping|7. Tap changer|8. Drive motor for tap changer|9. Drive shaft for tap changer|10. High voltage (HV) bushing|11. High voltage bushing current transformers|12. Low voltage (LV) bushing|13. Low voltage current transformers|14. Bushing voltage-transformer for metering|15. Core|16. Yoke of the core|17. Limbs connect the yokes and hold them up|18. Coils|19. Internal wiring between coils and tapchanger|20. Oil release valve|21. Vacuum valve}}]]