: Energy transfer
achieved by means of physical contact, i.e., coupling
other than inductive or capacitive coupling
Note 1: Conductive coupling may be achieved by wire, resistor, or common terminal, such as a binding post or metallic bonding.
Note 2: Conductive coupling passes the full spectrum of frequencies, including dc. Synonym direct coupling.
Source: from Federal Standard 1037C and from MIL-STD-188
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