Abstract: A generator for providing regulated current signals, to terminals of a load includes: a plurality of secondary stages, including a direct voltage source insulated from those of other stages, connected in series between the midpoint of the second half-bridge of each secondary stage and the midpoint of the first half-bridge of the next secondary stage, the load terminals being respectively connected to the midpoint of the first half-bridge of a first secondary stage, and to the midpoint of the second half-bridge of a last secondary stage; and a control circuit capable of: selecting a group of secondary active stages, and at least one regulating stage; simultaneously controlling each active stage, except the regulating stage, at the frequency of the current slots; controlling the regulating stage according to a frequency higher than the previous one; and controlling the switches of the non-selected secondary stages to insulate their voltage source.

Abstract: A method for generating current pulses and a current generator having a plurality of secondary stages. Each secondary stage has a DC voltage source and a switching circuit having four switches, connected together so as to form a line. One secondary stage being designated as a regulator stage has a regulator circuit having a smoothing inductor, a switch arranged between a terminal of the smoothing inductor and the DC voltage source, and a circuit for connecting the terminal of the smoothing inductor to the switching circuit when the switch of the regulator circuit is in a locked state. A control circuit of the current generator controls the switches of the switching circuits and the switch of the regulator circuit.

Abstract: A generator for providing regulated current signals, to terminals of a load includes: a plurality of secondary stages, including a direct voltage source insulated from those of other stages, connected in series between the midpoint of the second half-bridge of each secondary stage and the midpoint of the first half-bridge of the next secondary stage, the load terminals being respectively connected to the midpoint of the first half-bridge of a first secondary stage, and to the midpoint of the second half-bridge of a last secondary stage; and a control circuit capable of: selecting a group of secondary active stages, and at least one regulating stage; simultaneously controlling each active stage, except the regulating stage, at the frequency of the current slots; controlling the regulating stage according to a frequency higher than the previous one; and controlling the switches of the non-selected secondary stages to insulate their voltage source.

Abstract: A method for generating current pulses and a current generator having a plurality of secondary stages. Each secondary stage has a DC voltage source and a switching circuit having four switches, connected together so as to form a line. One secondary stage being designated as a regulator stage has a regulator circuit having a smoothing inductor, a switch arranged between a terminal of the smoothing inductor and the DC voltage source, and a circuit for connecting the terminal of the smoothing inductor to the switching circuit when the switch of the regulator circuit is in a locked state. A control circuit of the current generator controls the switches of the switching circuits and the switch of the regulator circuit.