In power supply circuits, transformers and inductors look similar and are often confused. However, they differ significantly in function, structure, and application. Understanding their differences helps ensure greater clarity and accuracy in product selection, production, and design.


Transformers are mainly used for voltage conversion and electrical isolation. Through electromagnetic induction, they achieve voltage step-up, step-down, or signal isolation. A transformer has at least two sets of windings: primary and secondary.It converts between electrical and magnetic energy via a magnetic core.

High Conductivity Ferrite Core Factory

They are widely used in chargers, power adapters, LED drivers, and other equipment. We commonly utilise frame series such as EE, EF, ER, and PQ, most of which are paired with high frequency electronic transformer bobbins.

Flyback power supply switch transformer

Inductors are designed for energy storage, filtering, and current stabilization, without changing voltage. They usually have only one winding and use self-induction to resist current changes and suppress noise interference.Common structures include drum core inductors and toroidal inductors. They are widely used as power filter inductors and Encapsulated Series Common mode choke in anti-interference circuits.

High-Current Noise-Suppression Inductor

In short:Transformers provide voltage transformation and isolation.Inductors provide energy storage and filtering.

Transformers require two windings and a closed magnetic circuit, while inductors usually use a single winding with more flexible magnetic paths.


In electronic equipment, they often work together to ensure stable power supply. Distinguishing their functions and structures helps avoid selection errors and improve product reliability.

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Preferred components for high-frequency power supplies requiring compact size and high isolation

The ER7.5 high-frequency electronic transformer features an SMD design, integrating the advantages of compact size, low loss, wide frequency band and high isolation. It has a typical power range of 2–5W, an operating frequency covering 20kHz–500kHz, and an isolation withstand voltage up to DC 2.0kV. Capable of stable operation in a wide temperature range of -40℃~+125℃, it is the ideal choice for high-frequency switching power supplies and signal isolation in scenarios requiring low power, high isolation and compact installation space.

SMD-ER7.5 mobile phone charging transformer

Multi-Domain Adaptability for Full-Scenario Applications

The ER7.5 bobbin offers exceptional adaptability and is widely used in core scenarios across various industries: In consumer electronics and home appliances,In the consumer electronics and home appliances sector, these are suitable for use in switching power supplies/adapters, control boards for small appliances, and audio-visual equipment power transformers; In industrial instrumentation, it is suitable for precision measuring instruments, industrial control equipment, communication network modules and various test equipment; In automotive electronics and new energy, it is integrated into on-board electronics, photovoltaic micro-inverters, energy storage BMS and other devices; In medical and security fields, it meets the high isolation and low leakage inductance requirements of medical devices such as monitors and oximeters, as well as security equipment including IPC and PoE cameras. It is also applicable to low-power power supplies and navigation communication equipment in high-reliability scenarios such as aerospace, military industry, marine and shipbuilding.

Custom-made ER high-permeability ferrite cores

Full Product Compatibility for Various Typical Terminals

This transformer is compatible with a wide range of terminal products, including various power supply products such as DC-DC module power supplies, Flyback/Forward switching power supply transformers and LLC resonant power supplies; drive and signal conditioning modules such as LED drive power supplies, PoE power supply modules and isolated amplifiers/signal conditioning modules; industrial IoT products such as industrial sensors/transmitters, smart meters and NB-IoT/LoRa IoT terminals; as well as professional terminals including medical monitoring and diagnostic equipment, on-board entertainment and control units, and security monitoring equipment.


Precise Selection: Master Five Core Key Points

For the selection of the ER7.5 transformer, focus on five core dimensions: Power range tailored for 2–5W low-power scenarios; Operating frequency covering the common 20kHz–500kHz band for switching power supplies; Isolation withstand voltage of ≥DC 1.5–2.0kV, meeting the high isolation requirements of safety regulations, medical and industrial fields; Compact size of approximately 9.5×8.0×6.0mm, perfectly suitable for ultra-compact spaces and high-density circuit boards; Wide temperature performance adapting to complex temperature-varying environments such as industrial and automotive applications, ensuring stable equipment operation.

Custom-made ER high-frequency electronic transformers

Gradient Complementarity in the Same Series for Demand-Oriented Selection

The three ER series transformers (ER7.5, ER9.5 and ER11.5) form a gradient complementary system, enabling flexible selection based on actual needs: ER7.5 features the smallest bobbin size, focusing on 2–5W power, with a common operating frequency of 50–500kHz and a withstand voltage of 1.5–2kV, specially designed for ultra-compact spaces and high-density circuit boards; ER9.5 has a medium size, with a power range of 5–12W, a common frequency of 30–300kHz and a withstand voltage of 2–3kV, suitable for compact spaces and conventional circuit boards; ER11.5 has a relatively large size, with a power range of 10–25W, a common frequency of 20–200kHz and a withstand voltage of 3–5kV, ideal for applications with sufficient installation space.


Exclusive Matching Bobbins for Optimal Performance

Mycoiltech has launched two exclusive bobbins specially matched for ER7.5, which precisely meet the device requirements and further enhance the operational performance: MCT-ER7.5-01 is made of PM9630 material with excellent high-temperature resistance, suitable for high-temperature working environments; MCT-SMD-ER7.5-02 is made of LCP-E4008 material with an elevated bottom design, which effectively increases the creepage distance and greatly improves operational safety.

ER pulse-triggered transformer bobbin

With its outstanding performance in multiple dimensions, the SMD-ER7.5 high-frequency electronic transformer bobbin achieves full adaptability across various domains and terminals. Combined with exclusive matching bobbins and the gradient selection scheme of the same series, it provides a highly reliable and well-adapted component solution for high-frequency switching power supplies and signal isolation products with low power and compact space requirements. It is also the core selection for the current development trend of miniaturization and high reliability of electronic equipment.


Email: sales008@mycoiltech.com

Name:Alex~Mycoiltech


Transformers are indispensable core components in electronic equipment and power transmission. Many people wonder why transformers are divided into high-frequency and low-frequency types. The answer is simple: differences in operating frequency determine their distinct structures and applications. Let’s explain this in plain terms.


The fundamental difference lies in operating frequency.Low-frequency transformers are designed for mains frequencies, typically 50Hz or 60Hz—the standard frequency for household and industrial power. Examples include the EE19 Consumer Electronics Power Control Transformer.

EE13 Charger Driver Transformer

High-frequency transformers operate at much higher frequencies, ranging from several kHz to several MHz, commonly used in compact electronic devices, such as the EI13 LED power supply driver transformer.


Different frequencies require completely different core materials.Low-frequency transformers use silicon steel sheets for their cores. Laminated silicon steel reduces heat loss but results in larger size, heavier weight, and higher copper and iron consumption.High-frequency transformers use ferrite cores (often paired with EE or EI bobbins). Similar to ceramic in texture, ferrite supports high-frequency operation and prevents overheating.


Size and applications are also clearly distinguishable.At the same power rating, high-frequency transformers can be several to over ten times smaller than low-frequency ones—this is why phone chargers and LED drivers are compact and lightweight.Low-frequency transformers are mainly used for mains voltage conversion, audio equipment, and industrial control, such as traditional power adapters and machine tool control transformers.

EE19 Low Frequency Power Supply Transformer

In short:Low-frequency,Works at mains frequency, bulky and durable.High-frequency: Compact and efficient, ideal for electronic devices.Understanding this makes selection much easier.


If you’re interested in electronic transformers, feel free to contact us anytime.

Email: sales008@mycoiltech.com

Name:Alex~Mycoiltech


As a high-power representative in the EE series, the high power EE65 encapsulated transformer has become a core power supply component for medium and high-power electronic equipment, thanks to its advantages of high-frequency adaptability and strong power-carrying capacity. It inherits the "double E butt-joint" magnetic core structure of EE-type transformers, adopts low-loss soft ferrite magnetic cores, and is equipped with a special encapsulation process to fully encapsulate the coils and magnetic cores, featuring both structural stability and insulation protection.

EE65 encapsulated power transformer bobbin


Its core highlights are large window area and convenient winding, with a power range of 900W to 4000W and an operating frequency of up to 20kHz to 500kHz. Through optimized winding design and the application of Litz wire, the EE65 encapsulated transformer can effectively reduce copper loss and iron loss, with efficiency far exceeding that of traditional power frequency transformers. Moreover, after encapsulation, it is moisture-proof and vibration-resistant, suitable for complex industrial environments, with outstanding cost performance and suitability for large-scale mass production.

EE65 Power Supply Drive Transformer Bobbin


The practicality of the EE65 encapsulated transformer is reflected in its precise adaptation to high-power scenarios in various fields, making it an optimal solution that balances performance and compliance. It has excellent insulation performance, meets safety standards such as UL and CE, has a wide operating temperature range and good heat dissipation, and is widely used in equipment such as UPS, inverters, chargers, and EE65 charger main power transformers. It can also be customized with parameters according to circuit topology requirements, becoming the core support for medium and high-power power supplies.

Email: sales008@mycoiltech.com

Name:Alex~Mycoiltech


In high-power drive scenarios, the combination of the PM87 Power supply drive transformer bobbin and high-permeability ferrite core is the core key to ensuring stable and efficient operation of equipment. The two are precisely matched and work together to perfectly solve the efficiency and safety problems under high-power operating conditions.

High-Frequency Transformer Bobbin Factory

The high-power PM87 drive transformer bobbin is made of high-quality phenolic resin material, featuring excellent high-temperature resistance and insulation. It can withstand the high-temperature test during high-power operation. At the same time, it has high mechanical strength and precise dimensions, which can stably support the winding, isolate the coil from the magnetic core, and adapt to the high-load demand of the PM87 transformer with a peak power of up to 10,000 watts.


The matched high-permeability ferrite core, with its extremely high magnetic permeability and low loss characteristics, can efficiently guide magnetic flux, reduce magnetic leakage waste, greatly improve magnetic energy conversion efficiency, adapt to high-frequency operating conditions, fit perfectly with the PM87 bobbin, and further reduce equipment temperature rise.

Custom-made transformer ferrite core

This combination is widely used in scenarios such as high-power industrial frequency conversion transformers, high-power power amplifiers, and high-frequency induction heating power supplies. It balances efficiency and safety, not only ensuring the stable operation of high-power equipment, but also helping equipment achieve miniaturization and high-efficiency upgrades, making it the preferred combination in the high-power drive field.

Email: sales008@mycoiltech.com

Name:Alex~Mycoiltech


Choose High-Performance Inductors to Empower Efficient Innovation

In today's era of rapid technological advancement, efficiency and reliability have become core requirements for electronic devices. Whether it's cutting edge electronics, power supplies, or communication systems, high-quality inductors play a pivotal role and our High Performance Filter Inductors are your top choice.

Through-hole Common-Mode Choke

Our inductors deliver exceptional performance, featuring low DC resistance, high current carrying capacity, and excellent thermal stability. Even in harsh environments, they ensure your devices operate smoothly and efficiently. Manufactured with precision to meet industry high standards, our through-hole, surface mount, Encapsulated Series Common Mode Choke and custom designed inductors seamlessly integrate into your projects, saving you time and reducing R&D costs. Our comprehensive product range covers power inductors, RF chokes, and more, fully meeting the needs of diverse industries such as automotive, telecommunications, consumer electronics, and industrial automation. With rigorous testing ensuring outstanding durability and reliability, our inductors guarantee stable system operation. Offering great value for money with reasonable pricing, we never compromise on performance.

Encapsulated SMD Precision Inductors

Our inductors excel in multiple scenarios: enhancing energy efficiency and reducing power loss in power equipment; ensuring stability in automotive systems amid harsh conditions; optimizing signal integrity and minimizing noise in telecommunications; and enabling compact, high-performance designs with SMD Common Mode Chokes in consumer electronics.

Three phase common mode choke

We don't just manufacture inductors we provide innovative solutions. Our professional team offers end-to end support, from product selection to custom services, helping turn your ideas into reality. Reject mediocrity and pursue excellence contact us today to learn more or request a sample. Let's join hands to build the future of technology!

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[Odense, Denmark] CIQTEK is proud to announce its participation in the 77th Annual Meeting of the Nordic Microscopy Society (SCANDEM 2026), held in Odense, Denmark, from June 9 to 12.

 

Visit Us at Booth II.5

As a hub for precision instrumentation, Odense provides the perfect stage for CIQTEK to achieve "Academic Resonance" with top-tier Nordic institutions. By deepening our roots in the scientific ecosystems of Denmark, Sweden, and Norway, we aim to address the most demanding characterization needs and empower regional research and industrial growth through our precision measurement tools.

 

Expert Talk: High-Speed SEM Innovation

A highlight of CIQTEK’s participation will be a technical presentation by our Solution Manager:

  • Speaker: Dr. Miles Yao, Solution Manager at CIQTEK

  • Topic: Unlocking the Power of Unique High-Speed Scanning Electron Microscopy Solution from CIQTEK

  • Focus: Discover how CIQTEK’s unique high-speed SEM solutions enable large-scale, high-resolution imaging to accelerate research productivity.

 

 

Global Vision: Seamless Professional Support

CIQTEK is rapidly expanding its global service network. At SCANDEM 2026, our European team will provide direct expertise to the Nordic research community. We are committed to delivering responsive and professional support across borders—from installation to specialized application development—ensuring scientific excellence for our partners in Northern Europe.

 

 

If your lab works with polymers, you know how crucial it is to detect radicals quickly and accurately. Free radicals play a big role in polymer stability, aging, oxidation, and cross-linking. However, traditional EPR systems can be complex, expensive, and take up a lot of space, making them hard to use for routine analysis.

Benchtop EPR systems, like the CIQTEK EPR200M, are changing the way polymer research is done. They bring fast, easy, and reliable radical detection right to your lab bench, without the need for specialized cryogens or long training. In many European polymer labs, where efficiency, space, and reproducibility are critical, these systems are becoming an increasingly popular choice.

 

Why Radical Detection Matters in Polymer Research

Polymers are used everywhere, from industrial materials to packaging and medical devices. Understanding how free radicals affect these materials is essential to improving performance and durability. Free radicals can cause oxidation, degradation, and unexpected chemical reactions, which can compromise polymer quality.

EPR spectroscopy remains the most direct and reliable way to detect unpaired electrons, offering insights that methods like FTIR or DSC cannot provide. For researchers aiming to monitor polymer aging, evaluate stabilizers, or test oxidation resistance, EPR is a must-have tool.

 

Challenges with Traditional EPR Systems

Even though EPR is highly valuable, traditional EPR systems often come with barriers that make routine use difficult. These challenges are particularly relevant for mid-sized university labs and industrial R&D labs across Europe and the Americas.

1. Complexity of Operation
Traditional EPR systems often require highly trained specialists. Setting up experiments, calibrating instruments, and interpreting results can be complicated and time-consuming. In labs where EPR expertise is limited, this can slow down research.

2. Limited Accessibility
Large EPR systems take up significant space and are often shared between multiple teams. Scheduling time on these instruments can be frustrating and may delay experiments.

3. High Cost and Infrastructure Requirements
Traditional systems may require liquid helium or nitrogen, regular maintenance, and dedicated lab space. For labs balancing tight budgets and space constraints, these systems are not always practical.

 

What is Benchtop EPR?

Benchtop EPR systems are compact, easy-to-use, and designed for modern labs that need fast and reliable results. Systems like the CIQTEK EPR200M allow researchers to start measurements quickly without a complex setup or long training. These systems bring EPR capabilities directly to the lab bench, making radical detection accessible to more users.

 

CIQTEK Benchtop EPRCIQTEK Benchtop EPR

 

How Benchtop EPR Improves Radical Detection in Polymers

Benchtop EPR offers several advantages that directly address the challenges of polymer research.

1. Faster Experiment Turnaround
With minimal setup, benchtop EPR systems allow researchers to measure radicals immediately. This is ideal for early-stage research, where rapid screening of polymer stability is essential.

2. Ease of Use for Non-Experts
Intuitive touchscreen interfaces and guided workflows mean that even users without specialized EPR training can operate the system effectively. In European labs with limited EPR specialists, this makes a big difference.

3. Flexible Placement in the Lab
The compact design allows benchtop EPR instruments to fit into small lab spaces, near production lines, or alongside other analytical tools. This flexibility makes it easier to integrate EPR into routine workflows.

4. Reliable Results for Routine Analysis
Benchtop EPR provides consistent and repeatable results, ensuring that researchers can trust the data for everyday polymer experiments.

 

Typical Applications in Polymer Research

Benchtop EPR is particularly useful for common polymer research scenarios:

1. Polymer Aging Studies
Monitoring radical activity over time to predict material lifespan.

2. Oxidation Stability Testing
Evaluating how polymers respond to environmental stress or exposure to oxidizing agents.

3. Additive and Stabilizer Evaluation
Assessing the effectiveness of antioxidants and other stabilizers in preventing polymer degradation.

These user cases are especially common in polymer research labs across Europe, including university departments and industrial R&D facilities.

 

Real CIQTEK Case Study

At CIQTEK, the EPR200M has been made available to multiple research labs across Europe, offering a compact and user-friendly solution for free radical detection in polymers. Its benchtop design allows labs to integrate EPR capabilities without the need for large infrastructure or highly specialized staff.

Many European polymer research teams have expressed interest in benchtop EPR systems for applications such as polymer aging studies, oxidation stability testing, and additive evaluation. By providing a straightforward and accessible way to perform EPR measurements, systems like the EPR200M support routine laboratory workflows and help labs explore new applications efficiently.

These developments highlight that benchtop EPR is increasingly seen as a practical tool for laboratories looking to simplify radical detection while maintaining reliable experimental practices.

 

 

Benchtop EPR systems like the CIQTEK EPR200M are transforming polymer research by making radical detection faster, easier, and more accessible. European labs, especially those with limited space, staff, or budget, are increasingly embracing these systems to enhance productivity and maintain high-quality results.

If you want to explore how a benchtop EPR can benefit your lab, contact CIQTEK to schedule a demo or request application support. info@ciqtek.com

 
WAIN’s M8/M12 series panel-mount connectors feature straight or right-angle solder pins for a secure, board-level termination while maintaining a compact footprint for high-density layouts.
 
Key Features & Specifications:
 
  • Coding options (M12):​ A, B, D, X — covering power, signal, and high-speed data applications.
  • Ingress protection:​ Up to IP67, resistant to dust, moisture, and common industrial chemicals.
  • Operating range:​ -40 °C … +85 °C for dependable performance in harsh environments.
 
Key Applications:

  • Industrial automation:​ PLC I/O modules, sensors.
  • Robotics:​ Controller boards to actuators.
  • Industrial networking:​ Ethernet switches, field-bus interfaces.
  • Energy systems:​ PV inverters, wind-turbine controllers.
  • Transportation:​ Automotive electronics, rail control units.

The WAIN spring‑clip quick‑mount frame features a plug‑in design that allows modules to be installed and removed rapidly via the elastic action of metal spring clips. To maintain long-term reliability, a spring‑clip stop structure prevents excessive deformation from repeated operations. An additional grounding‑pin stop structure safeguards against female-pin displacement or contact failure during abnormal mating. These enhancements significantly improve both installation efficiency and long-term operational stability.