Device for supplying a voltage to an electronic circuit, in particular to an electronic circuit associated with an intensity sensor placed on an electric line.

摘要

P Device for supplying a supply voltage to an electronic circuit, said device comprising a current transformer having a primary circuit (10) and a secondary circuit (11), a rectifier bridge (12) at the terminals of the secondary circuit, and at the output terminals (P, Q) of the rectifier bridge, a first capacitor (C1) in parallel with a first resistor (R1) at the terminals of which said supply voltage (U) is taken, a first switch (I1) being disposed between the output terminals (P, Q) of the rectifier bridge, characterized in that it comprises, between the output terminals (P, Q) of the rectifier bridge, a branch comprising in series a second capacitor ( C2), a second switch (I2) and a second resistor (R2), the first switch (I1) being controlled by a first threshold detector (DS2) at the terminals of the second capacitor (C2), the second switch (I2) being controlled by a second threshold detector (DS1) aux b the first capacitor (C1). /P