Conductive coupling passes the full spectrum of frequencies including direct current.
2.
The advantage of the inductive approach is that there is no possibility of ground fault detectors can make conductive coupling nearly as safe.
3.
In electronics, "'direct coupling "'or "'DC coupling "'( also called "'conductive coupling "') is the transfer of electrical energy by means of physical contact via a conductive medium, in contrast to inductive coupling and capacitive coupling.
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