• Product
  • Suppliers
  • Manufacturers
  • Solutions
  • Free tools
  • Knowledges
  • Experts
  • Communities
Search


What is a Transformer?

Encyclopedia
Encyclopedia
Field: Encyclopedia
0
China

What is a  Transformer?

Transformer Definition

A transformer is a passive device that transfers electrical energy from one circuit to another using electromagnetic induction.

ec6a5db6-56f2-4723-892d-b2a7abf77f4d.jpg

Transformer Parts And Construction

  • Primary Winding of Transformer

  • Magnetic Core of Transformer

  • Secondary Winding of Transformer

Working Principle

The working principle of a transformer involves mutual induction between coils to transfer electrical energy.

dde2f9f8-649e-49d9-bf05-db94bc4ad6bf.jpg

Core Function

The core of a transformer provides a path with low reluctance, essential for efficient flux linkage between the windings.

Voltage Conversion

Depending on the turns ratio between the primary and secondary windings, a transformer can either step up or step down the voltage.

  • If the primary coil has more turns than the secondary coil, the voltage decreases, known as step down.

  • If the primary coil has fewer turns than the secondary coil, the voltage increases, known as step up.

Inrush Current Impact

The inrush current is the initial surge of electricity experienced when a transformer is switched on, affecting its immediate performance.

Give a tip and encourage the author!
Recommended
Toroidal vs Square Transformers: Key Differences
Toroidal vs Square Transformers: Key Differences
What Is a Toroidal Transformer?A toroidal transformer is a major type of electronic transformer that has been widely used in household appliances and other electronic equipment with higher technical requirements. Its primary applications are as a power transformer and an isolation transformer. Abroad, toroidal transformers are already available in complete series and are extensively used in computers, medical equipment, telecommunications, instruments, and lighting applications.In China, toroida
Dyson
11/06/2025
What causes a transformer to be noisier under no-load conditions?
What causes a transformer to be noisier under no-load conditions?
When a transformer is operating under no-load conditions, it often produces louder noise than under full load. The primary reason is that, with no load on the secondary winding, the primary voltage tends to be slightly higher than nominal. For example, while the rated voltage is typically 10 kV, the actual no-load voltage may reach around 10.5 kV.This elevated voltage increases the magnetic flux density (B) in the core. According to the formula:B = 45 × Et / S(where Et is the designed volts-per-
Noah
11/05/2025
Under what circumstances should an arc suppression coil be taken out of service when it is installed?
Under what circumstances should an arc suppression coil be taken out of service when it is installed?
When installing an arc suppression coil, it is important to identify the conditions under which the coil should be taken out of service. The arc suppression coil should be disconnected under the following circumstances: When a transformer is being de-energized, the neutral-point disconnector must be opened first before performing any switching operations on the transformer. The energizing sequence is the reverse: the neutral-point disconnector should be closed only after the transformer is energ
Echo
11/05/2025
What fire prevention measures are available for power transformer failures?
What fire prevention measures are available for power transformer failures?
Failures in power transformers are commonly caused by severe overload operation, short circuits due to winding insulation degradation, aging of transformer oil, excessive contact resistance at connections or tap changers, failure of high- or low-voltage fuses to operate during external short circuits, core damage, internal arcing in oil, and lightning strikes.Since transformers are filled with insulating oil, fires can have severe consequences—ranging from oil spraying and ignition to, in extrem
Noah
11/05/2025
Related Products
Send inquiry
Download
Get the IEE Business Application
Use the IEE-Business app to find equipment, obtain solutions, connect with experts, and participate in industry collaboration anytime, anywhere—fully supporting the development of your power projects and business.