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Why are cores coated and what coatings are available?

April 26, 2017Coated coatings cores

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Why are cores coated and what coatings are available?

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In some cases, toroids and cores are coated to provide a smoother winding surface. However, coating such as nylon and polyester also provide a voltage breakd own guarantee up to 500 volts. Smaller cores are often coated with parylene that offers a voltage break down of 600 volts minimum.