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Updating Circuit Theory: The Multi-Potential Ground

Series

By Ian Darney

Here, a technique is described which defines the current and voltage distribution in the ground conductor of a cable assembly. It uses this data to create a circuit model which simulates cross-coupling of interference. The structure can be used to propagate interference far and wide, or to act as a shield. The choice lies with the designer.

Full details are provided of the Mathcad Worksheet which performs this task. The results are more meaningful than any full field simulation. The technique can be adopted by any electronic system designer.

[Image credit: Nenad Grujic for Unsplash]

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