sourcing map 4 pieces ferrite ring iron powder toroid cores 19.3 x 33.7 x 11.3 mm black grey de sold2026 can work all equipment for

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sourcing map 4 pieces ferrite ring iron powder toroid cores 19.3 x 33.7 x 11.3 mm black grey de sold2026 can work all equipment forsourcing map 4 pieces ferrite ring iron powder toroid cores 19. 3 x 33. 7 x 11. 3 mm black grey de Descriptions: This is a ferrite ring, not a magnet. It has no magnetism. The iron powder core is generally stored near location signals. It has the property of isolating eddy current, has low permeability and suppress interference. Widely used in power transformers, current transformers, measuring transformers, inductors, chokes, ballasts, voltage