EMC Question of the Week: December 16, 2024

magnetic field lines from a motor passing through a mult-layer circuit board generating eddy currents

An 8-layer circuit board has solid half-ounce copper planes on Layers 2, 3, 5 and 7. At 10 kHz, magnetic field lines passing through the circuit board induce eddy currents primarily in which layer(s)?  

  1. Layer 2
  2. Layers 2 and 7
  3. Layers 2, 3, 5 and 7
  4. Layers 1 - 8

Reveal Question of the Week - Answer 241216