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Based on two-probe inductive coupling and two-port cascade network theorem, in-circuit impedance extraction of primary of operational transformer has been discussed and validated. The importance of this approach is to overcome drawbacks in existing on-line Frequency Response Analysis (FRA) which is used to monitor impedance of the transformer winding to detect movement or deformation of transformer...
The performance of the electromagnetic interference (EMI) filter under the condition without the Une impedance stabilization network (LISN) are revealed and analyzed from the perspective of the common mode (CM) and differential mode (DM) impedances of the switched-mode power supply (SMPS), AC mains, and LISN. The in-circuit CM and DM impedances of the SMPS, AC mains, and LISN are extracted with an...
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