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transformer Product List

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NCW Trans

NCW Trans

The NCW transformer is a compact, lightweight, and slim space-saving product that incorporates a non-cut iron core wound with a unique coil bobbin.

The unique no-cut core winding technology and the adoption of directional silicon steel strips significantly reduce iron loss, greatly contributing to energy savings and the reduction of operating costs. It also complies with medical standards and international safety standards. 【Features】 ■ Fully utilizes core performance ■ No cuts or gaps in the core ■ Uses split bobbins ■ Improves work efficiency ■ Stabilizes quality ■ Reduces manufacturing costs *For more details, please refer to the PDF document or feel free to contact us.

  • transformer

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High-frequency transformer, switching transformer

High-frequency transformer, switching transformer

We can provide one-stop support from prototype to mass production. We also handle flyback designs. We have extensive experience with SMD (surface mount) types as well.

We have a wealth of delivery experience with products using Litz wire and copper foil winding that are compatible with high current and high frequency power supply equipment. We have also introduced automatic grinding equipment for ferrite cores, and we can meet the user's needs for inductance variation.

  • Inductor Coil

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Types of Transreactors

Types of Transreactors

We also publish information about the types we design and manufacture! Introduction to types of transformers and reactors.

This document introduces the types of transformers and reactors. It also includes the types designed and manufactured by Musashino Electric Works. Additionally, it provides a detailed explanation of the classification of single-phase and three-phase using photographs. Please take a moment to read it. [Contents] ■ Types of transformers ■ Types of reactors ■ Classification of single-phase and three-phase *For more details, please refer to the PDF document or feel free to contact us.

  • transformer

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[Data] Special Items of the Transformer

[Data] Special Items of the Transformer

Detailed explanation of "inrush current measures" and "harmonic measures"! Introduction to special items of transformers.

This document introduces special items related to transformers that may become problematic depending on customer requests or applications. When the frequency increases, attention must also be paid to the materials selected. It includes necessary measures such as "harmonic countermeasures," "inrush current countermeasures," and "leakage flux countermeasures." Each countermeasure is explained, so please take a moment to read through it. [Contents] ■ Inrush current countermeasures ■ Leakage flux countermeasures ■ Harmonic countermeasures *For more details, please refer to the PDF document or feel free to contact us.

  • transformer

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Switching Transformer Product Catalog

Switching Transformer Product Catalog

Lineup of PQ types and EE/EI types! We also accept custom orders for new designs and developments regarding shapes and pin counts.

This catalog introduces the "Switching Transformers" that our company handles. We offer a wide lineup categorized by size, including "PQ type," "EE/EI type," "EE/EI/EER type," and "EER type." We also accept new design development and custom orders based on shape, pin count, and more. Please use this for selecting products. 【Lineup】 ■ PQ type ■ EE/EI type ■ EER type ■ EPC/SMD type ■ EPC type *For more details, please refer to the PDF document or feel free to contact us.

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Power Transformer Product Catalog

Power Transformer Product Catalog

New design and development of special transformers such as OI transformers and cut-core transformers is also available for custom orders.

This catalog introduces the "Power Transformers" handled by our company. We offer a rich lineup including "PCB Mount Transformers" with an insulation class of E, "Equipment Installation Transformers" of classes A and B, and "NCW Transformers (horizontal)/(vertical)" of class B. In addition to standard products ranging from 50VA to three-phase 15kVA, we also accept orders for new designs and custom solutions for leakage transformers and other special transformers. 【Product Lineup】 ■ PCB Mount Transformers ■ Equipment Installation Transformers ■ NCW Transformers (horizontal)/(vertical) ■ OI Transformers ■ Cut Core Transformers (horizontal transformers) *For more details, please refer to the PDF document or feel free to contact us.

  • transformer

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[Custom Order Example] Duct-mounted transformer with reduced temperature rise

[Custom Order Example] Duct-mounted transformer with reduced temperature rise

Reduced the temperature class by one rank! We have suppressed the temperature rise of the transformer without changing the installation space and other conditions.

We would like to introduce a case of a duct-internal transformer with suppressed temperature rise. After completing the housing and circuit design, we received a request to suppress the temperature rise of the transformer, as the temperature rise during aging slightly exceeded the specifications without changing the installation space and other conditions. In response, we carefully discussed the storage space for the transformer and installed ventilation ducts within the winding that remained within the allowable range. As a result, in conjunction with the orientation of the air-cooling fan, we achieved a temperature rise suppression of △8°C compared to the initial value, reducing the temperature class by one rank. 【Custom Product Specifications】 ■ Size and Dimensions: 200mm × 160mm × 140mm ■ Voltage Specifications: Primary Voltage 100V / Secondary Voltage 200V ■ Capacity: 2000VA ■ Applicable Standards: IEC60601-1 ■ Insulation Type: Class F ■ Remarks: Inrush Current below 180A ■ Product Used: Medical Equipment *For more details, please refer to the PDF document or feel free to contact us.

  • transformer

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High quality and custom options available! Transformer and reactor product catalog.

High quality and custom options available! Transformer and reactor product catalog.

One-stop support from design to mass production! Technical information such as key material data and winding techniques (edgewise winding of rectangular wire, litz wire) is also included! Please take a look!

This catalog is a product catalog for the products handled by Musashino Doko Co., Ltd. It includes a variety of items such as "power transformers," "control transformers for distribution boards," "reactors," and "switching transformers." ■ Looking for a transformer and reactor manufacturer that can handle bulk orders... ■ Wanting custom solutions with short lead times instead of existing products... We have the know-how and technology to solve many of your concerns. We provide high-quality transformers backed by reliable technology, from design to mass production, all in a one-stop service, so please feel free to contact us. *For those interested, we will send a comprehensive catalog by mail, so please feel free to download it or contact us! [Contents] <Power Transformers> ■ Board-mounted transformers ■ Equipment installation transformers ■ NCW transformers ■ OI transformers ■ Cut core transformers *For more details, please refer to the PDF materials or feel free to contact us.

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Suitable for medical devices! Medical standard compliant NCW transformer - compact boost transformer.

Suitable for medical devices! Medical standard compliant NCW transformer - compact boost transformer.

IEC standard compliant! Numerous achievements in the introduction of medical devices! Custom-made, one-stop support for design development, standard acquisition, and mass production!

Are you having trouble selecting transformers that meet various standards? - Unable to obtain transformers compliant with IEC standards for medical devices - Cannot find a manufacturer that can handle everything from design to certification - Unsure which transformers to choose for medical devices - Need transformers with low leakage current - Want to make products more compact ★ The NCW transformers from Musashino Tsukou are ideal for medical device power supplies, as they are 'compliant with IEC standards 60601-1 and 61558-1, featuring low leakage current, compact, lightweight, and thin space-saving designs,' solving your concerns! ★ Numerous successful implementations as compact step-up transformers for medical X-ray generators! We can provide transformers suitable for Cockcroft-Walton circuits for high-voltage power supplies! 'Musashino Tsukou offers one-stop in-house support from design to mass production!' ■ We propose solutions to our customers through hearings at the design stage. ■ With the technical expertise cultivated over 60 years, we realize your ideal products. ■ Our in-house mass production allows us to deliver products to you in a short lead time. If you have any questions, please feel free to contact us.

  • transformer

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Numerous successful implementations! Custom transformers for LLC power resonant converters.

Numerous successful implementations! Custom transformers for LLC power resonant converters.

The low leakage inductance design with tight tolerances is ideal for energy-saving and high-efficiency LLC power supplies! We offer one-stop support from design to mass production!

"Are you having trouble selecting a transformer for your LLC power resonant circuit?" ◆ The variation in the transformer's leakage inductance is large. ◆ The variation in the transformer's magnetizing inductance is large. ◆ The output is not as expected under heavy load. "Musashino Electric has various know-how to solve your concerns!" ★ Based on abundant experimental data obtained from many implementation results, we will commit the transformer's parameters to meet your specifications! ★ With our unique winding method, we can achieve low tolerance for leakage inductance, magnetizing inductance, and switching frequency to your specified values. ★ Thanks to our extensive inventory of custom winding materials such as litz wire and copper foil, we can provide quick responses from prototyping to delivery. ◎ We will design and develop custom transformers suitable for converters for LLC power supplies that clear various challenges! If you have any questions, please feel free to contact us.

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OI Trans

OI Trans

OI Transformers are custom products of Musashino Tsukou, engaged in the design, manufacturing, and sales of various transformers and reactors.

By combining a rectangular-shaped core and a strip-shaped core, we have achieved a slim design with excellent leakage and temperature characteristics. It also has an advantage in installation space compared to the EI type. 【Products Available】 ■ Compact VA Series *For more details, please refer to the PDF document or feel free to contact us.

  • transformer
  • Transformers

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Medical transformer for X-ray generator high-voltage transformer.

Medical transformer for X-ray generator high-voltage transformer.

Our high-voltage transformer for X-ray generators has a proven track record as a special transformer made from original bobbins.

We have a proven track record of delivering various products, including dental equipment and pet X-ray devices, to many users.

  • X-ray inspection equipment

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Notice of Participation in the "New Manufacturing and New Services Exhibition for Small and Medium-sized Enterprises"

Notice of Participation in the "New Manufacturing and New Services Exhibition for Small and Medium-sized Enterprises"

One-stop support from design to mass production, from power transformers to high current high frequency reactors.

We will be exhibiting at the "New Manufacturing and New Services Exhibition for Small and Medium Enterprises." Date and Time: December 7 (Mon) 11:00-17:00 December 8 (Tue) 10:00-17:00 December 9 (Wed) 10:00-16:00 Location: Tokyo Big Sight, A Hall, Aomi Exhibition Building Booth: M41 [Introduction of Main Exhibits] Through the development of a super high-precision ferrite core automatic grinding device, we have made it possible to achieve an inductance tolerance of ±5% in mass production. [Product Introduction] ■ High-frequency transformers, reactors for harmonic countermeasures Compatible with large current and high-frequency power supply equipment Many products using litz wire and copper foil winding have been delivered. ■ OI Transformers Thin transformers with excellent leakage characteristics and temperature characteristics They have an advantage in installation space compared to conventional EI types. ■ NCW Transformers Significantly reduce iron loss through our unique no-cut core winding technology and the use of oriented silicon steel sheets Greatly contribute to reducing operating costs for energy-efficient operation Compliant with medical standards and international safety standards. *For more details, please refer to the PDF materials or feel free to contact us.

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[Presenting Basic Knowledge Materials!] Collection of Basic Technical Materials on Transformers

[Presenting Basic Knowledge Materials!] Collection of Basic Technical Materials on Transformers

We are offering a technical document summarizing essential basic knowledge for considering transformers (voltage converters) for free!

This document introduces the basic technology of transformers. It explains the types of transformers, types of reactors, classification based on transformer structure, types of insulation for transformers, constituent materials of transformers, main types of transformers and their characteristics, and various inspection methods. For any inquiries regarding transformers, please contact Musashino Tsukou, which has been in business for 60 years. 【Contents (excerpt)】 ■ What is a transformer ■ Types ■ Principles ■ Classification based on transformer structure ■ Types of insulation for transformers *For more details, please refer to the PDF document or feel free to contact us.

  • transformer
  • Transformers

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Principle of transformers

Principle of transformers

Composed of two windings independent of the iron core! Here is an introduction to the principles of transformers!

I will introduce the principles of a transformer. A transformer consists of a core made of iron and two independent windings. The winding connected to the power source is called the primary winding, and the winding connected to the load is called the secondary winding. When an alternating voltage is applied to the primary winding (P), a current flows through it (referred to as the excitation current), which generates a magnetic flux within the core. This change in magnetic flux induces a voltage in the secondary winding (S), and the induced voltages V1 and V2 in the primary and secondary windings are determined by the ratio of the number of turns in the primary winding N1 to the number of turns in the secondary winding N2. When a voltage is applied to the primary winding, a voltage proportional to the number of turns is induced in the secondary winding, and by changing N1 and N2, the ratio of the primary voltage to the secondary voltage can be arbitrarily altered. *For more details, please refer to the PDF document or feel free to contact us.*

  • transformer

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