Abstract: In a device for the control of a circuit comprising a resonance inverter power supply for at least one load comprising an inductive component, the inverter power supply comprises at least two switches (Q.sub.1, Q.sub.2) mounted between the terminals of a DC voltage supply. The device has a current transformer (TR) comprising a primary winding (TRp) series-connected between the load and the common junction point between the switches (Q.sub.1, Q.sub.2), the freewheeling rectifiers (D.sub.1, D.sub.2) and the snubber capacitors (C.sub.1, C.sub.2); a first secondary winding (TR.sub.S1) connected between the emitter of one (Q.sub.1) of the two switches and the first terminal of a first DC supply (E.sub.1), the second supply terminal being connected to the base of the switch (Q.sub.1); a second secondary winding (TR.sub.S2) connected between the emitter of the other switch (Q.sub.2)and the first terminal of a second DC supply (E.sub.2), the second supply terminal being connected to the base of this other switch (Q.

Abstract: An induction cooker comprises at least one cooking heater comprising an inductor, a generator delivering a AC current to supply the inductor and an element made of a non-magnetic, electrically conductive material to provide shielding against the disturbances generated by the inductor. The shielding function is improved by electrically connecting the element to the mains by means of a high-frequency filter of the generator. Preferably, the electrical link between the shielding and the filter comprises a capacitor.