Copper-wire toroidal coil labeled “21” mounted on a square base.
Copper-wound toroidal inductor attached to a pale green circuit board on a white background.
Copper-wire toroidal inductor mounted on a rectangular base against a white background.
Copper-wire toroidal coil labeled “21” mounted on a square base.
Copper-wire toroidal coil labeled “21” mounted on a square base.
Copper-wound toroidal inductor attached to a pale green circuit board on a white background.
Copper-wire toroidal inductor mounted on a rectangular base against a white background.

Flat wire circular common mode inductor

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