オータマ List of Products and Services

●Current Sensor Current clamp cores (clamp meters) measure by clamping around the power line, and for applications requiring high sensitivity, permalloy is sometimes used. Additionally, gap cores, which are cut from round or square laminated iron cores, detect magnetic fields by inserting Hall elements into the cut sections. Permalloy, which can detect even slight magnetic fields, plays an important role in controlling the batteries of hybrid and electric vehicles. ●CT (Current Transformer) Core Current transformers are devices that step up or down current values, and they are effective for reducing large primary currents to manageable levels on the secondary side. One example is the ZCT (Zero Sequence Current Transformer) used in distribution panels for leakage circuit breakers, which employs highly sensitive permalloy to reliably detect even minor electrical leaks. ●EI Core This is a core shaped literally like an "E" or "I." Permalloy cores have a higher permeability compared to other magnetic materials and are used in small power transformers and current transformers. *For inquiries or consultations regarding our products, please use the contact form on our website. 【Contact Us】https://www.ohtama.co.jp/contact.html

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▼Features of Magnetic Shield Rooms and Magnetic Shield Cases▼ ●Magnetic Shield Room A magnetic shield room is constructed by attaching magnetic shielding materials to the walls and ceiling of a building. This method primarily involves on-site work and is used for relatively large rooms. It is also possible to create new wall surfaces by erecting partitions in areas where there are no walls in the building. ●Magnetic Shield Case This is a smaller, box-shaped shield compared to the room. It is mainly used for measuring devices that utilize electron beams, such as electron microscopes, and is installed to completely cover the device, protecting it from external magnetic fields. It is self-supporting with an aluminum or stainless steel frame, and a permalloy magnetic shield is constructed. The position and size of doors and openings can be designed according to your requirements. *For inquiries or consultations regarding our products, please use the contact form on our website.* 【Contact Us】https://www.ohtama.co.jp/contact.html

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▼Characteristics of Magnetic Shielding Material Permalloy▼ ●High Permeability - Permalloy PC (Nickel content 78-80%) Permalloy PC (Fe-Ni alloy) has a very high permeability and is often used to protect beams in electronic optical products from environmental magnetic fields. - Permalloy PB (Nickel content 45%) Permalloy PB (Fe-Ni alloy) has high saturation and is mainly used in products with relatively strong magnetic fields, such as cores. ●Excellent Workability Like other metals, it can be processed in almost all ways, including laser cutting, bending, welding, press forming, deep drawing, and rolling. We also provide consistent heat treatment to enhance magnetic properties, allowing us to deliver products tailored to your needs. ●Wide Variety of Plates We offer plate thicknesses starting from 0.1 mm. We cut and heat-treat to your desired size before selling. *For inquiries or consultations regarding our products, please use the contact form on our website. 【Contact Us】https://www.ohtama.co.jp/contact.html

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●High Performance By using materials developed with our unique technology and conducting all processes in-house—from simulation and manufacturing to magnetic annealing and performance measurement—we achieve high performance. We will provide a report on the performance evaluation along with the delivery. ●Three Types of Lineup We offer three products with different performance characteristics. By selecting according to your needs, you can eliminate the time required for specification consideration. For specifications, please refer to the materials available for download on our website. The materials also include data from measurements of the products' magnetic shielding performance. ●Resin Breadboard A resin breadboard with 289 M4 screw holes has been installed inside the magnetic shielding box. You can start using it immediately after purchase by installing coils and sensors. *For inquiries or consultations regarding our products, please use the material download page or the contact form on our website. 【Contact Us】https://www.ohtama.co.jp/contact.html 【Download Materials】https://www.ohtama.co.jp/download.html

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