SMPS Transformer | High-Quality EI Switch Power Supply Transformers

Welcome to Sitong Transformer, a trusted manufacturer of high-quality EI switch power supply transformers. If you're in need of reliable SMPS transformers for your applications, you've come to the right place. We specialize in designing and producing top-notch transformers that meet the industry's highest standards.

EI Type Transformer is the standard type of transformer and it’s commonly used in many electronics products design.It’s main application include Switching-mode power supply (SMPS), Switching AC-DC adapter, Electronics power board, and chargers.

EI Type Transformer is a traditional transformer. The core of EI Type Transformer is combined by lamination E and I, so it is called EI transformer or laminated transformer. EI Type Transformers are widely used in electronic equipment, not only it is an old type transformer, but also it is an economic transformer. 

EI Type Transformer is usually used as power transformer at 50-60Hz. In audio applications, EI type transformer is commonly used as tube power transformer and output transformer. Because there is air gap between E lamination and I lamination, and the air gap is easily adjustable by filling some medium, it is suitable to make output transformers and chokes. This is why you see many audio output transformers and chokes are designed in EI Type Transformer. If you want to know more details, please contact us by email.

What Are SMPS Transformers?

SMPS transformers, also known as switch-mode power supply transformers, play a crucial role in the operation of switch-mode power supplies. These transformers are designed to efficiently convert electrical energy by using high-frequency switching techniques. At Sitong Transformer, we understand the importance of reliable and efficient SMPS transformers, and we are committed to delivering products that meet the unique requirements of our customers.

Our Range of SMPS Transformers

Sitong Transformer offers a diverse range of SMPS transformers to cater to various applications. Our transformers are meticulously designed and manufactured using premium materials and advanced techniques, ensuring superior performance and durability. Whether you need a single unit or bulk orders, we can accommodate your needs with our flexible production capabilities.

Features

When you choose Sitong Transformer's SMPS transformers, you can expect the following key features and benefits:

1. High Efficiency

Our transformers are optimized for efficiency, minimizing power losses and reducing energy consumption in your applications.

2. Compact Design

We understand the importance of space-saving solutions. Our SMPS transformers are designed with a compact form factor, making them suitable for applications where size is a constraint.

3. Wide Voltage Range

Our transformers support a wide input voltage range, allowing them to be used in diverse applications and environments.

4. Simple

EI Type Transformer is a traditional transformer, born very earily. The structure of EI type transformer is simple and widely known. Untill now, most of transformer factories can manufacture EI transformers, and production process is mature.

5. Economic

EI Type Transformer has a long history. It is easy to find EI Type Transformer components in the market, and lead a economic solution for the project. You even needn't spend much to have one.

6. EI lamination

 Material has undergone annealing treatment by high temperature, Hi-B, low exciting current, and has consistence performance.

7. Copper wire

OFC(Oxygen Free Copper) copper wire applied in our EI Type Transformers. OFC has no hydrogen embrittlement, and has a high conductivity. It is commonly used in audio equipment, vacuum electronic components, wire and so on.

8. Workmanship

From picking up a core, calculating an appropriate copper wire to delivery test, every single EI Type Transformer should undergo very strict processing flow. Only strict processing technics can guarantee a high quality EI transformer. And only transformers from regular manufacturers can guarantee strict processing technics.

9. Custom service

We supply custom made EI Type Transformers to satisfy special requests and needs. Please get in touch with us through the contact information on our website. We can design and manufacture transformers suitable for you.

Applications

‧ switching supplies

‧ fax machines

‧ TV sets and displays

We have both capabilities and facilities to manufacture and export EI Type Power Transformers of all sizes and designs. We manufacture these EI Type Transformers in both Single / Three Phase. Our range of EI Transformers goes up to to a power rating of 1000 KVA ( 3 Phase). We use top quality raw materials to manufacture these electronic EI Transformers which ensure life and faultless operations.. Our EI Transformers are 100% tested to reduce the rejection rate. 

The company is known for high performing and affordable single phase EI Transformers in the market. Our EI Transformer finds application in various electrical and electronic equipments which are listed below: Cellular operators, U.P.S , Invertors, Voltage Stabilizers, Control systems, Medical equipments, Toroidal Transformers, Power supplies, Audio amplifiers.Sitong offer EI Type of transformer from very small transformer to the largest of EI transformer.Any custom design is welcome, and please contact us for more details

Standard E-I Transformer Construction

In an E-I structure, the matching “E” and “I” components are stamped from sheets of thin grain-oriented electrical steel that are later stacked to create the core. The primary and secondary windings are wound on bobbins. Multiple bobbins are placed on spindles and spun in order to apply the windings.This method of using bobbins allows for automation that reduces the manufacturing times and also provides insulation between the windings and the core. 

The E-I core laminations are stacked inside the bobbins to complete the transformer. Their ease of construction makes standard E-I transformers very economical to manufacture, which is their primary advantage.Although economical to manufacture, standard E-I transformers do have several limitations. 

As the punched laminations are stacked to form the core structure, small imperfections and burrs in the butting edges of laminations create an effective “air gap” which reduces the operating flux levels. Decoupling of windings is more common with linear construction, and as a result, leakage inductance and stray capacitance are naturally higher. 

Additionally, the loose laminations will vibrate at the fundamental frequency, which introduces disturbing hum (mechanical noise). All these disadvantages result in a transformer of larger size with less efficiency.

Welcome to choose our smps transformer!

At Sitong, quality is our top priority. We have implemented a rigorous quality control process to ensure that each SMPS transformer leaving our facility meets the highest standards. Our transformers undergo comprehensive testing for factors such as efficiency, voltage regulation, and temperature performance, guaranteeing their reliability and longevity.

Ready to enhance your applications with high-quality SMPS transformers? Contact Sitong Transformer today. Our knowledgeable team is available to assist you with product inquiries, customization requests, and any other questions you may have. Experience the Sitong Transformer difference in power supply transformers!