Editing Capacitive coupling (section)

{{Short description|Transfer of energy between circuits}}
{{Redirect-distinguish|Coupling capacitor|Decoupling capacitor}}
{{Redirect-distinguish|DC blocking capacitor|Bypass capacitor}}
{{More footnotes needed|date=August 2023}}
'''Capacitive [[coupling (electronics)|coupling]]''' is the transfer of energy within an [[electrical network]] or between distant networks by means of [[displacement current]] between circuit(s) [[node (circuits) | nodes]], induced by the electric field. This coupling can have an intentional or accidental effect.

[[File:Fluorescent tube under electric line.jpg|thumb|upright|alt=Capacitive coupling from high-voltage power lines can light a lamp continuously at low intensity.|Capacitive coupling from high-voltage power lines can light a lamp continuously at low intensity.]]

In its simplest implementation, capacitive coupling is achieved by placing a [[capacitor]] between two nodes.<ref name="J279">{{cite book|last=Joffe, Elya|title=Grounds for Grounding:A Circuit to System Handbook|year=2010|publisher=Wiley-IEEE|isbn=978-0-471-66008-8|pages=277}}</ref>  Where analysis of many points in a circuit is carried out, the capacitance at each point and between points can be described in a [[Capacitance#Capacitance matrix|matrix form]].