Abstract: The invention relates to a “push-pull” amplifier, comprising an input (12) and an output (14), which includes: a main amplification branch comprising two amplification transistors (18, 20) connected in opposite series between two supply voltages (V+, V?), the amplifier output (14) being connected between the two transistors (18, 20), and a control circuit (22, 24) for each amplification transistor (18, 20) connected to the input (12) to each receive as an input the signal to be amplified. The main amplification branch comprises, between each transistor (18, 20) and the output (14), a member having a nonlinear response (38, 40) and means (30, 32) for introducing at the input of the control circuit (22, 24) of each transistor (18, 20), a nonlinear compensating signal suitable for bringing about the circulation of a minimum current in the member having a nonlinear response (38, 40).

Abstract: The switched power supply (10) comprises: an input (16) for an AC input current (IPRI) under an input voltage (VPRI); an output (36) for a DC output current (Isec), and successively, from the input to the output, a system of controlled breaker switches (20); a transformer (21) whereof the primary (24) is linked at the output of the system of controlled breaker switches (20); a rectifying circuit (28) connected across the terminals of a secondary circuit (26) of the transformer; and a storage capacitor (32) linked in parallel across the output terminals of the rectifier circuit (28) with interposition of a coil (34), the output (36) being formed across the terminals of the storage capacitor (32).

Abstract: A current-voltage converter with a current reflector, for which the input current includes a fixed component and a variable component, includes an input for the current to be converted, an output for the converted voltage, two constant current sources each connected between the output and a respective reference voltage, at least one MOSFET transistor mounted in series with each constant current source, and a resistor for converting the current into a voltage, arranged between the output and ground. The gate of each MOSFET transistor is connected to one of the reference voltages. The input for the current to be converted is connected to the output through one of the MOSFET transistors. The converted further includes, for each MOSFET transistor, means for re-injecting into at least one of the current sources, a current equal to the current absorbed in the gates of the MOSFET transistors.

Abstract: The switched power supply (10) comprises: an input (16) for an AC input current (IPRI) under an input voltage (VPRI); an output (36) for a DC output current (Isec), and successively, from the input to the output, a system of controlled breaker switches (20); a transformer (21) whereof the primary (24) is linked at the output of the system of controlled breaker switches (20); a rectifying circuit (28) connected across the terminals of a secondary circuit (26) of the transformer; and a storage capacitor (32) linked in parallel across the output terminals of the rectifier circuit (28) with interposition of a coil (34), the output (36) being formed across the terminals of the storage capacitor (32).

Abstract: The invention relates to a “push-pull” amplifier, comprising an input (12) and an output (14), which includes: a main amplification branch comprising two amplification transistors (18, 20) connected in opposite series between two supply voltages (V+, V?), the amplifier output (14) being connected between the two transistors (18, 20), and a control circuit (22, 24) for each amplification transistor (18, 20) connected to the input (12) to each receive as an input the signal to be amplified. The main amplification branch comprises, between each transistor (18, 20) and the output (14), a member having a nonlinear response (38, 40) and means (30, 32) for introducing at the input of the control circuit (22, 24) of each transistor (18, 20), a nonlinear compensating signal suitable for bringing about the circulation of a minimum current in the member having a nonlinear response (38, 40).

Abstract: This current-voltage converter(22) with a current reflector, the input current including a fixed component and a variable component, includes: an input (24) for the current to be converted; an output (26) for the converted voltage; a resistor (36) for current-voltage conversion arranged between the output (26) and the ground, the input (24) being connected to the output (26) for the circulation of the current to be converted in the resistor (36); and a current reflector circuit (38) including two constant current sources (40, 42) , each connected between the output (26) and a respective reference voltage (32, 34). This converter (22) also includes a cascode stage (44, 46) , mounted in series with each constant current generator (40, 42) in order to impose a constant potential difference on the terminals of each constant current generator (40, 42) regardless of the output voltage.