Abstract
Eddy current testing (ECT) probe consisted of spin‐valve giant magneto‐resistance (SV‐GMR) sensor and meander type exciter coil applied to printed circuited board (PCB) conductor dimension and alignment inspection is proposed in this paper. High‐frequency excitation up to 18 MHz is allowed to inspect the thin PCB conductor, less than 10 μm. The proposed ECT probe characteristics and configuration were presented. The inspection results were shown that the proposed ECT probe will provide an accurate inspection.
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