AC/DC CONVERTER WITH GALVANIC INSULATION AND SIGNAL CORRECTOR

摘要

The invention relates to an AC/DC converter comprising, at the inlet thereof, a rectifier circuit connected in series to a primary winding (5) of an isolating transformer (6) and to a splitting switch (T1) controlled by a control circuit (10) by pulse-width modulation of a signal representing a primary current, the isolating transformer comprising a first secondary winding (7) in the same direction as the primary winding and connected to an output line (8) of the converter via a diode (D4) and a filter coil (L1), and a secondary winding (9) in the opposite direction to the primary winding and directly connected to the output line via a diode (D2), the output line being connected to an output capacitor (Cout). The converter comprises an analog circuit for correction of the primary current, which is connected to the control circuit and to a measuring element (30) that supplies a signal representing the primary current and is arranged so as to transform said signal into a triangular signal able to control the control circuit.