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An electrical device that interfaces balanced and unbalanced lines without disturbing each line's impedance.

8 votes
3 answers
2k views

What causes common mode currents in a coaxial cable?

I have been messing around with a signal generator, an RF current probe and an open ended coax cable. From about 50 MHz onwards, I can measure a significant common mode current if I attach some wires …
Cyrus Tirband's user avatar