Patent ID: 6654267
Filing Date: 2003-11-25
Classification: H02M,Y02B

Abstract:
A power supply apparatus comprising:an input for receiving an input electric current; first and second outputs for providing first and second electric power supply currents each having specific characteristics; and means for conversion of the electric current connected between said input and said first and second outputs, said conversion means comprising a transformer comprising a primary winding supplied by said input electric current and first and second secondary windings respectively feeding said first and second outputs by way of first and second shaping circuits, said primary winding and said first and second secondary windings being disposed on the same magnetic circuit, said first shaping circuit comprising regulating means adapted to act on the electric current supplying said primary winding, said regulating means being adapted to ensure regulation in dependence on a signal from said first shaping circuit, said second shaping circuit comprising autonomous regulation means, comprising a regulation loop connected to said second output, for regulation of the current produced by said second output, said second shaping circuit being adapted to provide an alternating current, and said second shaping circuit comprising a rectification stage producing a voltage and, at the output of said rectification stage, modifying means for modifying the voltage in accordance with a variable division ratio.