EE 42 Transformer

The popular EE 42 transformer made in China Feneng, the one of the largest professional manufacturers of EE 42 transformer in China. High quality EE 42 transformer with high-efficiency process of management We don’t mind customize EE 42 transformer if you have specification or drawing....
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Product Details

The popular EE 42 transformer work for high frequency

Quick Details

Place of origin:Guangdong,China 

Brand Name:FELENG

Model Number:EE4220

Usage:High Frequency


Coil Structure:Toroidal

Coil Number:Autotransformer

Rated Power:100W-3000W


Material:Copper Winding

Storage temper…­25℃to+85℃



Bobbin Shape:vertical

Bobbin Material:Phenolic


High frequency…super


Packaging &Delivery

Packaging Details

Standard export carton and pallet package

Delivery Time

Shipped in 5-7 days after payment

High quality EE 42 transformer with high-efficiency process of management




High frequency EE 42 transformer,Strict and scientific quality management system, standardized  operation process


Strong package



 Our transformer  inductance department has several automatic production line with automatic  multi-axis winding machine, automatic assembly ferrite core machine.

Tips:analysis of the bad reason of high frequency transformer overcurrent.

transformer overcurrent, what causes high frequency transformer overcurrent. Through actual production and analysis of defective products, we found that for high-frequency transformers, overcurrent is generally caused by the following four aspects.

  • 1.Transformer Saturation.

  • It is well known that the winding of transformer will show sensibility under the condition of ac, and its ac impedance is large, and its impedance is proportional to the permeability. Have saturation magnetic flux density and magnetic materials, if the transformer design, improper or bias phenomenon will make transformer work flux density is too high, when is greater than the saturation flux density, permeability is 0, the impedance transformer impedance only basic resistance, the equivalent of the power supply is directly to the negative electrode on a wire, the consequences. In the switching power supply, this phenomenon often occurs in the push-pull topology.

  • 2. load short detection.

  • Here refers to the load generally refers to the customer product in the transformer output side of other components of damage, short circuit and other reasons.

  • 3.layer short circuit.

  • Transformer winding insulation is not done, there is inter-turn short circuit or the original side winding short circuit.

  • 4. characteristics of some core materials.

  • The characteristics of magnetic core materials, such as the design did not consider the influence of dc bias and temperature on the permeability, in the case of high temperature and high dc bias, resulting in transformer winding impedance reduction, overcurrent.