EFD High Frequency Transformer

Super EFD high frequency transformer characteristic:small size, cheap price, high reliability,EFD type transformer is basically ferrite core, they are widely used in switching power supplies and a variety of electronic circuit, the oscillation mode has the whole bridge, half bridge, single side type, resonant, with excellent material properties, applicable to typical transformer structure, EFD core increases the cross section area of magnetic core, can reduce power supply as much as possible the volume of the whole, conducive to miniaturization, can increase the output power, suitable for all kinds of switch power supply transformer coil and choke coil.
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Product Details

Super EFD high frequency transformer





Quick Details

Place of origin:Guangdong,China
(Mainland)

Brand Name:Feieng

Model Number:EFD30

Usage:All kinds of chargers,stage lig…

Phase:Single

Coil Structure:Toroidal

Coil Number:Autotransformer

Outerstructure:horizontal

Magnetic core…EFD

Phase number:Single

Packing deta…Standard export carton

Coil structure:Toroidal

Voltage param…DC 12V,AC 110V,or customer…

Certification:CE,RoHS

Frequency:50/60Hz

Working freque…20KHz-500KHz

Storage temper…­25℃to+85℃


Packaging &Delivery

Packaging Details

Standard export carton


Delivery Time

5-7 working days after payment confirmed


EFD high frequency transformer characteristic:small size, cheap price, high reliability,EFD type transformer with basically ferrite core, they are widely used in switching power supplies and a variety of electronic circuit, the oscillation mode has the whole bridge, half bridge, single side type, resonant, with excellent material properties, applicable to typical transformer structure, EFD core increases the cross section area of magnetic core, can reduce power supply as much as possible the volume of the whole, conducive to miniaturization, can increase the output power, suitable for all kinds of switch power supply transformer coil and choke coil etc. 

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EFD high-frequency transformers are commonly used in dc-dc converters, drive transformers, PFC inductors, portable switching power chargers, etc.


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The process description: first, Prepare everything before the winding, check whether the bobbin conforms to the specifications before winding,  no damage and no lack of stitches;Matching its tape and end control tape should be selected as required. Check whether the enameled wire specification and model can meet the process drawing requirements or  not, and whether the surface of enameled wire is bright and clean. after this, came to the second process. the winding way 100% according to the drawing,such as, row winding, the enameled wire should be clearly and orderly in line, not allow uneven,loose, cross, knot etc, if between winding then must be the enameled wire turns keep some distance.



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