It is extremely effective for countermeasures against conducted noise below 150 kHz! A large size has also been added to the lineup, making it compatible with large-diameter cables.
Product Outline and Features It has excellent impedance characteristics below 150kHz. High permeability contributes to the miniaturization of the core. It ensures stable impedance characteristics over a wide temperature range. A larger size has been added to the lineup, making it compatible with large diameter cables.
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basic information
We offer ferrite cores as a noise countermeasure. We have various types available, such as ring type, split type, and flat type, to meet our customers' needs.
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Applications/Examples of results
It is highly effective against conducted noise waves below 150 kHz. Impedance based on the number of cable turns and ferrite cores If the impedance is insufficient with one turn, increasing the number of turns to two or three can significantly increase the impedance. The impedance increases by the square of the number of turns. If you are adding a ferrite core later, using a split type allows for easy installation. The cut surface of our split type is processed to prevent gaps from forming. For the ferrite core characteristic diagram (Z-f characteristics), please refer to our website. http://www.seiwa.co.jp/index.html
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Company information
Hoshia Electric has established itself as a top manufacturer in various business fields, including information display systems such as road information boards, industrial lighting known for its waterproof and explosion-proof features under the name "Water Pearl," tunnel lighting that began with the full-scale installation in the Kanmon Tunnel, and resin products represented by "Cutting Duct." As a new business, we started the electromagnetic noise countermeasure (EMC) product business in 1997 to address electromagnetic noise issues arising from digital devices. In the LED business, we successfully developed a blue light-emitting diode in April 2002 and a white light-emitting diode in December of the same year. Based on these technologies, we are actively expanding our business in the field of LED lighting fixtures, ranging from roads and tunnels to industrial lighting. On March 9, 2018, Hoshia Electric Co., Ltd. was listed on the First Section of the Tokyo Stock Exchange. In April 2022, we transitioned to the Tokyo Stock Exchange Standard Market. Moving forward, we will continue to leverage our unique creativity and technological capabilities cultivated over the years to develop even more innovative products and strive for business expansion. Back to the roots of manufacturing "From the Kyoto to the world"