Talk:Direct coupling

Proposed merger with Conductive coupling
"No" vote. Direct coupling is associated with circuit design and is intended to couple DC as well as AC. Conductive coupling is associated with electromagnetic interference. These are very different topics, even though the basic mechanism is the same. The articles should be linked in the text, or in a See also section. -- Cheers, Steelpillow (Talk) 13:02, 28 January 2009 (UTC)


 * Support There is no link to or discussion of Electromagnetic interference in either article and no citation supporting User:Steelpillow's interpretation of the terms. The one ref cited (http://www.its.bldrdoc.gov/fs-1037/dir-009/_1217.htm) directly states that the two are synonyms. -—Kvng 14:29, 23 February 2013 (UTC)
 * Support: synonyms per ref, Steelpillow is possibly confusing with Capacitive coupling. Widefox ; talk 19:18, 30 April 2013 (UTC)

✅ ~KvnG 22:22, 28 February 2014 (UTC)


 * Oppose : This article is about circuit design, while conductive coupling is about a form of unwanted interference. It's just a definition from a standard and should probably be merged into Electromagnetic interference or something similar 71.167.67.115 (talk) 18:05, 17 December 2014 (UTC)

DC bias
The purpose of direct coupling is not to provide bias as this article seems to think. Direct coupling is used when an application needs to retain the DC component of the signal, such as in instrumentation. Biasing is a secondary issue. In multistage amplifiers, for instance, if direct coupling is used, then the bias provided by the first circuit to the active element of the second needs to be taken into account because it will interact with the biasing received directly. But this is a consequence of using direct coupling, not the reason for it. Direct coupling is nearly always avoided when not an essential part of the signal. SpinningSpark 18:58, 12 December 2021 (UTC)

Galvanic coupling
User:Alej27 has added galvanic coupling as an alias because indeed it says so (without citation) at Coupling (electronics). All instances of "galvanic coupling" elsewhere in the encyclopedia are associated with Galvanic corrosion. Maybe the connection is technically correct but not really on the mark WRT the content of this article. ~Kvng (talk) 15:01, 28 February 2022 (UTC)
 * The term is used in papers concerning connection between sensor devices in the human body.. SpinningSpark 15:39, 28 February 2022 (UTC)
 * Also does not connect well to the current content of this article. ~Kvng (talk) 16:39, 28 February 2022 (UTC)