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    AI Overview
    Tape Wound Toroidal Cores - Magnetic Metals Corporation
    Tape Wound Mu Metal Toroidal Cores are high-permeability magnetic components manufactured by winding thin mu-metal alloy tape (often
    0.008
    in
     /
    0.20
    mm
     thickness) into a ring shape, followed by controlled hydrogen atmosphere annealing. These cores provide exceptional low-field magnetic performance, making them ideal for high-accuracy current transformers, GFCI sensors, and sensitive measurement devices, commonly featuring inner/outer diameters ranging from
    0.5
    to
    3.0
    inches
    . 
    Key Characteristics and Benefits 
    • High Permeability: Mu-metal offers extreme magnetic permeability, allowing for high sensitivity in low-level magnetic fields.
    • Low Losses: Tape winding combined with precise annealing minimizes magnetic losses and distortion.
    • High Accuracy: Widely used in metering current transformers (CTs) and ground fault circuit interrupters (GFCIs).
    • Manufacturing Excellence: Fabricated on specialized machines and annealed in specialized furnaces to achieve optimal magnetic properties. 
    Applications 
    • Summation current transformers
    • Instrument transformers and transducers
    • Ground fault protection (GFCI) and leakage current sensors
    • Energy metering devices
    • Sensitive magnetic shielding applications 
    Specifications and Availability 
    • Sizes: Diameters typically range from
      0.5
      inches
       (
      12.7
      mm
      ) to
      3.0
      inches
       (
      76.2
      mm
      ).
    • Materials: Apart from high-nickel mu-metal, cores are available in silicon-iron, cobalt-iron, and amorphous/nanocrystalline alloys.
    • Customization: Manufacturers offer custom winding and annealing services to meet specific permeability and size requirements. 
    • Custom MuMETAL® Toroidal Cores | Magnetic Shield Corporation
      MuMETAL® toroidal cores are custom tape-wound cores that are used in industries that require high metering accuracy current transf...
      Magnetic Shield Corporation
    • Tape Wound Mu Metal Toroidal Core Suppliers,Manufacturers,Factory
      Tape Wound Mu Metal Toroidal Core. Mu Metal Toroidal Cores are supplied to industries requiring HMA current transformer cores. Mu ...
      Jiangsu Hongyun Precision Industry Co., Ltd.
    • Learn More about Tape Wound Cores - Magnetics
      Nanocrystalline cores are a choice solution for applications such as common mode chokes and current transformers as they exhibit h...
      Mag Inc.
    • Tape Wound Toroidal Cores - Magnetic Metals Corporation
      Tape wound toroidal cores are fabricated on specially designed machines that wind insulated tape onto a mandrel. The cores are the...
      Magnetic Metals Corporation
    • Tape Wound Toroidal & Cut Cores for Industrial Controls
      For more than seven decades, Magnetic Metals has been producing the magnetic components used in increasingly sophisticated voltage...
      Magnetic Metals Corporation
    • Tape wound toroidal cores
      Tape wound toroidal cores are used in a variety of applications, including: * **Summation current transformers** For residual curr...
      VDM-Metals
    • Tape Wound Toroidal Cores for the Electric Vehicle Industry
      We are unique in the industry for carrying all types and thicknesses of nickel-iron, amorphous and nanocrystalline materials used ...
      Magnetic Metals Corporation
    • Mumetal Toroidal Cores - AEM Cores
      When wound into a toroid, this powder physically separates the laminations and reduces the possibility of inter lamination welding...
      AEM Cores
    • Custom MuMETAL® Toroidal Cores | Magnetic Shield Corporation
      MuMETAL® toroidal cores are custom tape-wound cores that are used in industries that require high metering accuracy current transf...
      Magnetic Shield Corporation
    • Tape Wound Mu Metal Toroidal Core Suppliers,Manufacturers,Factory
      Tape Wound Mu Metal Toroidal Core. Mu Metal Toroidal Cores are supplied to industries requiring HMA current transformer cores. Mu ...
      Jiangsu Hongyun Precision Industry Co., Ltd.
    • Learn More about Tape Wound Cores - Magnetics
      Nanocrystalline cores are a choice solution for applications such as common mode chokes and current transformers as they exhibit h...
      Mag Inc.
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    My Ad Center

    Web results

    Custom MuMETAL® Toroidal Cores


    Magnetic Shield Corporation
    https://www.magnetic-shield.com › mumetal-toroidal-c...
    Magnetic Shield Corporation
    https://www.magnetic-shield.com › mumetal-toroidal-c...
    We supply custom tape-wound MuMETAL® Toroidal Cores to industries requiring high metering accuracy (HMA) current transformer cores. MuMETAL® is pre-annealed.

    Tape Wound Toroidal Cores


    Magnetic Metals Corporation
    https://www.magneticmetals.com › products-materials
    Magnetic Metals Corporation
    https://www.magneticmetals.com › products-materials
    Tape wound toroidal cores have a near perfect magnetic circuit configuration and permit the most efficient application of high permeability magnetic alloys.
    Missing: Mu ‎| Show results with: Mu

    Circuit Model of a Tape-Wound Toroid


    Finite Element Method Magnetics
    https://www.femm.info › wiki › TapeWoundToroid
    Finite Element Method Magnetics
    https://www.femm.info › wiki › TapeWoundToroid
    The purpose of this note is to derive a simple circuit model of a tape-wound toroid that brings the additional reluctance due to tape winding clearly into ...Read more
    Missing: Metal ‎| Show results with: Metal

    Tape Wound Mu Metal Toroidal Core Suppliers ...


    Jiangsu Hongyun Precision Industry Co., Ltd.
    https://www.hongertech.com › tape-wound-mu-metal-t...
    Jiangsu Hongyun Precision Industry Co., Ltd.
    https://www.hongertech.com › tape-wound-mu-metal-t...
    Mu Metal Toroidal Cores are supplied to industries requiring HMA current transformer cores. Mu Metal has high permeability, low magnetization in higher ...Read more

    Mumetal Toroidal Cores


    AEM Cores
    https://www.aemcores.com.au › technology › mumetal-...
    AEM Cores
    https://www.aemcores.com.au › technology › mumetal-...
    When wound into a toroid, this powder physically separates the laminations and reduces the possibility of inter lamination welding. It also helps prevent shot ...Read more
    Missing: Tape ‎| Show results with: Tape

    High-Quality Tape Wound Core Manufacturers


    MK Magnetics, Inc.
    https://www.mkmagnetics.com › products › tape-woun...
    MK Magnetics, Inc.
    https://www.mkmagnetics.com › products › tape-woun...
    Compact Design: The toroidal shape of core centers allows for a more compact, space-saving design essential in modern electronic use situations. Magnetic ...Read more
    Missing: Mu ‎| Show results with: Mu

    Magnetic Metals' Tape Wound Cores Optimize The ...


    YouTube · EE Times
    510+ views · 1 month ago
    YouTube · EE Times
    510+ views · 1 month ago
    4:13
    Our tape wound toroidal and cut cores provide the essential magnetic performance and efficiencies that outperform transformer laminations.
    Missing: Mu ‎| Show results with: Mu
    EE Times
    YouTube·
    Mar 9, 2026

    Magnetic Metals' Tape Wound Cores Optimize The ...

    YouTube·EE Times·Mar 9, 2026
    YouTube

    How to make small Toroidal Flyback Transformer using Mu ...


    Electronics Forum (Circuits, Projects and Microcontrollers)
    https://www.electro-tech-online.com › threads › how-to-...
    Electronics Forum (Circuits, Projects and Microcontrollers)
    https://www.electro-tech-online.com › threads › how-to-...
    Nov 15, 2021 — Examples are mu-metal, permalloy, and supermalloy. They can be manufactured as stampings or as long ribbons for tape wound cores. Some ...

    Tape wound toroidal cores


    VDM-Metals
    https://www.vdm-metals.com › tape-wound-toroidal-co...
    VDM-Metals
    https://www.vdm-metals.com › tape-wound-toroidal-co...
    Tape wound toroidal cores from VDM Metals are characterized by their unique material quality with a high degree of purity and optimum microstructure.Read more
    Missing: Mu ‎| Show results with: Mu

    Tape wound cores and application


    CB Technology Industrial Co., Limited
    https://www.custom-magnetics.com › news › wound-co...
    CB Technology Industrial Co., Limited
    https://www.custom-magnetics.com › news › wound-co...
    Tape wound cores are widely used in magnetic amplifiers, converter and inverter transformers, current transformers, and static magnetic devices.
    People also ask
    What is a tape wound core?
    Tape wound cores are magnetic components created by winding a continuous strip of electrical steel, typically nanocrystalline-amorphous or nickel alloy, into a rectangular or circular shape.

    High-Quality Tape Wound Core Manufacturers | MK Magnetics


    MK Magnetics, Inc.
    https://www.mkmagnetics.com › products › tape-woun...
    MK Magnetics, Inc.
    https://www.mkmagnetics.com › products › tape-woun...
    What are the disadvantages of toroidal transformers?
    An error has occurred. Please try again later.
    What is the magnetic permeability of MU metal?
    Mu-metal - Wikipedia
    Mu-metal typically has relative permeability values of 80,000–100,000 compared to several thousand for ordinary steel. It is a "soft" ferromagnetic material; it has low magnetic anisotropy and magnetostriction, giving it a low coercivity so that it saturates at low magnetic fields.

    Mu-metal - Wikipedia


    Wikipedia
    https://en.wikipedia.org › wiki › Mu-metal
    Wikipedia
    https://en.wikipedia.org › wiki › Mu-metal
    Which is better toroidal core or EI core?
    Toroidal cores, due to their circular winding structure, are more prone to distortion under prolonged stress. EI Transformers over Toroidal provide higher durability for heavy machinery, rolling stock, shipboard equipment, and portable power systems.Jul 29, 2025

    When To Choose EI Transformers Over Toroidal For Your Equipment


    Frigate Manufacturing
    https://frigate.ai › transformers › when-to-choose-ei-trans...
    Frigate Manufacturing
    https://frigate.ai › transformers › when-to-choose-ei-trans...
    People also search for
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