Secondary resonant circuit

Abstract

Secondary resonant circuit The invention relates to a secondary resonant circuit (5) for carrying out, in a recharging mode, a contactless power transmission by resonant inductive coupling, with a primary resonant circuit (3) comprising at least a first capacitance (Cp) and a first inductance (Lp), this power transmission being directed towards the resistive load (2) coupled to the secondary resonant circuit (5), this resistive load having an equivalent impedance, this secondary resonant circuit (2) comprising: a second capacitance (Cs) of value Cs and a second inductance (Ls) of value Ls, magnetically and partially coupled to the first capacitance (Cp) and the first inductance (Lp), a controlled variable inductance Le(t) arranged to be controlled so as to activate a parametric amplification effect of the current in the secondary circuit, a decoupling assembly (10). Abstract figure: figure 1.