Home / FBelec Products / Inductor & Choke / High Frequency Transformer
Picture Model No. Methods for Cooling Frequency Characteristic Winding Form Description Datasheet Order
Ee42 high frequency power transformer, customized production of China high frequency power transformer

FBHFPT-01

Liquid/oil immersion type High Frequency Three-winding

Ee42 high frequency power transformer, customized production of China high frequency power transformer

Efd15 switching power supply high frequency transformer, Ningbo epc13 switching power supply high frequency transformer customized production

FBHFPT-02

Liquid/oil immersion type High Frequency Other

Efd15 switching power supply high frequency transformer, Ningbo epc13 switching power supply high frequency transformer customized production

Factory Supply ee ee10 ee13 ee16 ee19 ee40 Inductors Common Mode Choke Filter Inductors For Laptop

FBHFPT-03

Liquid/oil immersion type High Frequency Three-winding

Factory Supply ee ee10 ee13 ee16 ee19 ee40 Inductors Common Mode Choke Filter Inductors For Laptop

Choke Coil Common Mode Ferrite Core Inductor For Switching Power Supplies

FBHFPT-04

Liquid/oil immersion type High Frequency Three-winding

Choke Coil Common Mode Ferrite Core Inductor For Switching Power Supplies

High Current Customized Flat Wire Choke Coil Inductor 20mH China manufacturer

FBHFPT-05

Liquid/oil immersion type High Frequency Three-winding

High Current Customized Flat Wire Choke Coil Inductor 20mH China manufacturer

EE40 AC line filter inductor RoHS CE Certified 1H Ferrite Toroidal Core Coils Inductor

FBHFPT-06

Dry type High Frequency Other

EE40 AC line filter inductor RoHS CE Certified 1H Ferrite Toroidal Core Coils Inductor

EC Series EC9.5,EC40, EC42-1003, EC42-1190,EC49 Switch Power Supply

FBHFPT-07

Liquid/oil immersion type High Frequency Three-winding

EC Series EC9.5,EC40, EC42-1003, EC42-1190,EC49 Switch Power Supply

choke transformer high voltage high frequency EC42 FBELE factory

FBHFPT-08

Liquid/oil immersion type High Frequency Three-winding

choke transformer high voltage high frequency EC42 FBELE factory

Electrical transformer fly back filter transformer EFD series china factory inductor

FBHFPT-09

Liquid/oil immersion type High Frequency Three-winding

Electrical transformer fly back filter transformer EFD series china factory inductor

EEL22 Series High frequency horizontal Transformers

FBHFPT-10

Liquid/oil immersion type High Frequency Three-winding

EEL22 Series High frequency horizontal Transformers

Electrical Transformer Flyback Filter Transformer EEL25 Series China Factory Inductor

FBHFPT-11

Liquid/oil immersion type High Frequency Three-winding

Electrical Transformer Flyback Filter Transformer EEL25 Series China Factory Inductor

Wholesale Customizable Inductor Type EE35 Series Ferrite Core High Frequency Power Supply Transformer Supplier

FBHFPT-12

Liquid/oil immersion type High Frequency Three-winding

Wholesale Customizable Inductor Type EE35 Series Ferrite Core High Frequency Power Supply Transformer Supplier

1.5V power transformer E13 pulse transformer High Frequency EEL22  Led Driver Power Transformer

FBHFPT-13

Liquid/oil immersion type High Frequency Three-winding

1.5V power transformer E13 pulse transformer High Frequency EEL22 Led Driver Power Transformer

Eponent EE40 High Frequency Transformer Inductor For LED Driver

FBHFPT-14

Liquid/oil immersion type High Frequency Three-winding

Eponent EE40 High Frequency Transformer Inductor For LED Driver

smt high voltage high frequency transformer magnetic ferrite core transformer power transformer

FBHFPT-15

Liquid/oil immersion type High Frequency Three-winding

smt high voltage high frequency transformer magnetic ferrite core transformer power transformer

high voltage toroidal power supply erl35 high frequency transformer

FBHFPT-16

Liquid/oil immersion type High Frequency Three-winding

high voltage toroidal power supply erl35 high frequency transformer

2021 New 10KVA/100KV Power Frequency HV Dry-Type Hipot Test Transformer/AC DC High Voltage Dielectric Tester Manufacturer

FBHFPT-17

Liquid/oil immersion type High Frequency Three-winding

2021 New 10KVA/100KV Power Frequency HV Dry-Type Hipot Test Transformer/AC DC High Voltage Dielectric Tester Manufacturer

 Ferrite Core High Frequency Transformer for Power Supply High Frequency Transformer high voltage

FBHFPT-18

Liquid/oil immersion type High Frequency Three-winding

Ferrite Core High Frequency Transformer for Power Supply High Frequency Transformer high voltage

Customized High Frequency Pulse Switching Power Transformer

FBHFPT-19

Liquid/oil immersion type High Frequency Three-winding

Customized High Frequency Pulse Switching Power Transformer

Customized Large Current Inductor flat wire inductor High Quality High current inductors

FBHFPT-20

Liquid/oil immersion type High Frequency Three-winding

Customized Large Current Inductor flat wire inductor High Quality High current inductors

Three Phase 3P Nanocrystalline Cores For EMI Filter Common Mode Chokes

FBHFPT-21

Liquid/oil immersion type High Frequency Three-winding

Three Phase 3P Nanocrystalline Cores For EMI Filter Common Mode Chokes

ETD49 220V 12V High Frequency Power Transformer For Car Inverter

FBHFPT-22

Liquid/oil immersion type High Frequency Three-winding

ETD49 220V 12V High Frequency Power Transformer For Car Inverter

ETD59 12v 230v 1000w custom transformer for inverter welder

FBHFPT-23

Liquid/oil immersion type High Frequency Three-winding

ETD59 12v 230v 1000w custom transformer for inverter welder

230v to 400v high-frequency step-up transformer for spot welding machine

FBHFPT-24

Liquid/oil immersion type High Frequency Three-winding

230v to 400v high-frequency step-up transformer for spot welding machine

ETD transformer,switching mode power transformer ,ETD29,ETD39,ETD44,ETD59

FBHFPT-25

Liquid/oil immersion type High Frequency Three-winding

ETD transformer,switching mode power transformer ,ETD29,ETD39,ETD44,ETD59

ER35 Type Computer Power 230v 12v AC Transformer

FBHFPT-26

Liquid/oil immersion type High Frequency Three-winding

ER35 Type Computer Power 230v 12v AC Transformer

MI filter inductor/uu9.8 / uu10.5 AC power line filters OEM/ODM are welcome High Frequency Transformer PQ/EE/ETD/ER/EPC

FBHFPT-27

Liquid/oil immersion type High Frequency Three-winding

MI filter inductor/uu9.8 / uu10.5 AC power line filters OEM/ODM are welcome High Frequency Transformer PQ/EE/ETD/ER/EPC

made in China erl39 high frequency transformer, erl-35 high frequency transformer, erl39 high frequency transformer

FBHFPT-28

Liquid/oil immersion type High Frequency Three-winding

made in China erl39 high frequency transformer, erl-35 high frequency transformer, erl39 high frequency transformer

Ec39 horizontal high frequency transformer is customized by FBELEC high frequency transformer manufacturer

FBHFPT-29

Liquid/oil immersion type High Frequency Three-winding

Ec39 horizontal high frequency transformer is customized by FBELEC high frequency transformer manufacturer


High Frequency Transformer

  • What is a high frequency electronic transformer:


    High frequency electronic of FBelec transformer is an electronic transformer with high working frequency. Generally, the working frequency is higher than 20kHz.High Frequency Ferrite Power Transformers

    An accurate definition is an electronic transformer with high working frequency. Generally, if the working frequency is higher than 20kHz, it is high frequency.

    The definition of high frequency electronic transformer is very clear, but it is misled by some opinions expressed by some domestic experts. Next, in order to return the true face of high-frequency electronic transformer, it is necessary to clarify the concepts of transformer, electronic transformer and high-frequency electronic transformer, so as to eliminate those misunderstandings?

    First, find out what a transformer is? The transformer working on the principle of electromagnetic induction refers to adding alternating voltage to the primary winding of the coil to generate alternating magnetic flux, and inducing output voltage in the secondary winding, so as to transmit energy, transform voltage (or signal) and isolate electrical insulation.

    To generate electromagnetic induction, the primary winding must be applied with alternating voltage, and there can be no transformer with DC voltage as working power supply. The statement that the DC voltage is used as the working power supply is a misunderstanding that the DC to AC inverter or variable frequency power supply is included in the scope of the transformer.

    As long as there is electromagnetic induction, the transformer can work without a magnetic core. For example, an electronic transformer with a working frequency of MHz is a hollow transformer made of printed circuit board. The statement that the high-frequency electronic transformer is "a magnetic transformer used in a frequency conversion circuit" belongs to the double misunderstanding that the frequency conversion circuit is included in the scope of the transformer and that the transformer must have a magnetic core.

    No matter the working frequency of the transformer is high or low, it transmits energy through electromagnetic induction. The transmission energy is related to the material, structure, size and working frequency of the transformer. If the transmitted energy is a fixed value, the working frequency is high, the number of times of transmitting energy in a certain time is more, and the energy transmitted each time can be less, the transformer uses less materials and the structural size is small. The view that the transformer has limited transmission energy and needs to use high frequency to increase transmission energy is a misunderstanding of putting the cart before the horse. Using pulse width modulation (PWM) to change the transmission energy and voltage of transformer is only an external control method. Not only high-frequency transformer but also low-frequency transformer can be used. It is also a misunderstanding to think that after PWM control, the energy transmission mode of high-frequency transformer and low-frequency transformer is different, and the voltage change mode of high-frequency transformer and low-frequency transformer is different.


    Secondly, find out what is an electronic transformer? Electronic transformer is a transformer used in electronic circuits and electronic equipment. If the scope is expanded, it includes transformers, inductors, mutual inductors and other electromagnetic components used in all electronic circuits and electronic equipment. Electronics is not limited to power electronics (the more common term in China is power electronics), but also includes industrial electronics, information electronics, wireless electronics and microelectronics. Although electronic transformers are different from power transformers, they are not different from RF signal transformers, nor are they limited to "power transformers in switching power converter circuits". Power transformer is only one of the electronic transformers. If we only look at the success rate of the electronic transformer, it will inevitably be a prison. Therefore, it is a misunderstanding to limit electrons to power electrons and electronic transformers to power transformers.

    Again, find out what is a high-frequency electronic transformer? There is a common saying about the division of high, medium and low working frequency of electronic transformer, that is, the working frequency of 50Hz or 60Hz is called power frequency, or below it is called low frequency; 60Hz to 20kHz is called intermediate frequency, and 400Hz is intermediate frequency, not power frequency; Above 20kHz is called high frequency. Why choose 20kHz as the limit? Because 20kHz is the upper limit of audio frequency, beyond which you can't hear audible noise. Therefore, the operating frequency exceeds 20kHz, and it is high frequency from 20kHz to MHz and GHz. There are two misunderstandings in the formulation of "electronic transformer with application frequency range from tens of kHz to several megakhz": one is 20kHz, which is different from tens of kHz. One is a few GHz, not a few megakhz.


    High frequency can also be divided into higher frequency (20kHz ~ 50KHz), medium high frequency (50KHz ~ 200kHz), high frequency (200kHz ~ 1MHz) and ultra-high frequency (above 1MHz), but they all belong to high frequency, and they do not have different understanding of high frequency because of different applicable power. It is a misunderstanding that there are different ranges of high frequency under different power.


    Overall structure of high frequency electronic transformer

    In order to adapt to the increasingly light and short electronic equipment, a main development direction of high-frequency electronic transformer is to develop from three-dimensional structure to plane structure, chip structure and film structure, so as to form generation after generation of new high-frequency electronic transformers: plane transformer, chip transformer and film transformer. The development of the overall structure of high-frequency electronic transformer not only forms a new magnetic core structure and coil structure and adopts new materials, but also brings a new development direction to the design and production process. In terms of design, in addition to studying the electromagnetic field distribution of various new structures and how to achieve the optimal design, we should also study various problems of multilayer structures. In terms of production technology, we should study various new processing methods, so as to ensure the consistency of performance and realize the mechanization and automation of processing technology.


    In MHz high-frequency electronic transformers, Follow transformers are used in more and more application fields. Discussing the structure, design method, manufacturing process and application characteristics of air core transformer is also its research and development direction. In addition, the research of high-frequency electronic transformers with new working principles such as piezoelectric transformers is also the development direction. After nearly ten years of research and development, piezoelectric transformers have been applied in some fields.


    Using computer to optimize and design the overall structure scheme is one of the main development directions of various electronic devices. Of course, it is also a main development direction of high-frequency electronic transformer. This can shorten the design time, reduce the material consumption, shorten the production cycle and reduce the cost.

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