<P> Capacitive coupling is the transfer of energy within an electrical network or between distant networks by means of displacement current between circuit (s) nodes, induced by the electric field . This coupling can have an intentional or accidental effect . </P> <P> In its simplest implementation, capacitive coupling is achieved by placing a capacitor between two nodes . Where analysis of many points in a circuit is carried out, the capacitance at each point and between points can be described in a matrix form . </P> <P> In analog circuits, a coupling capacitor is used to connect two circuits such that only the AC signal from the first circuit can pass through to the next while DC is blocked . This technique helps to isolate the DC bias settings of the two coupled circuits . Capacitive coupling is also known as AC coupling and the capacitor used for the purpose is also known as a DC - blocking capacitor . </P> <P> A coupling capacitor's ability to prevent a DC load from interfering with an AC source is particularly useful in Class A amplifier circuits by preventing a 0 volt input being passed to a transistor with additional resistor biasing; creating continuous amplification . </P>

A capacitor that transfers an ac signal from one stage to another is called a
find me the text answering this question