Abstract: A converter (145) is described comprising: a first input terminal (150) and a second input terminal (155), a first output terminal (165) and a second output terminal (170) connectable to opposite ends of the electrical load (110), a first electric branch (201) adapted to connect the first input terminal (150) with a first intermediate electrical node (202), a second electric branch (203) adapted to connect the first intermediate electrical node (202) with the second input terminal (155), a third electric branch (205) adapted to connect the first output terminal (165) with a second intermediate electrical node (206), a fourth electric branch (207) adapted to connect the second intermediate electrical node (206) with the second output terminal (170), a first active switch (180) placed on the second electric branch (203) and having a first conduction terminal (185) and a resonant circuit (200) sized to reduce the electric voltage and/or electric current applied to said first active switch at least in the moments

Abstract: A method of operating a flyback converter is provided. The flyback converter comprises a transformer having a primary side winding and a secondary side winding, a primary switch at the primary side of the transformer and a secondary switch at the secondary side of the transformer, and a control unit. At the end of a switching cycle, before turning on the primary side switch: the control unit generates a Zero Voltage Switching (ZVS) pulse in the secondary side winding, such that the parasitic capacitor of the primary side switch is discharged. Consequently, the primary side switch is turned on in ZVS or near ZVS conditions.

Abstract: An insulator for a gas-insulated device is provided, including an injection-molded insulator disc and a conductor, wherein the insulator disc includes a first circumferential surface, a second circumferential surface disposed radially outwards from the first circumferential surface, and a web portion connecting the first circumferential surface and the second circumferential surface, characterized in that the web portion includes a wave structure, the web portion having an inner wave profile at the first circumferential surface and an outer wave profile at the second circumferential surface, and the inner wave profile and the outer wave profile have a radius of curvature of 2 mm or more and 10,000 mm or less.

Abstract: An insulator for a gas-insulated device is provided, including an injection-molded insulator disc and a conductor, wherein the insulator disc includes a first circumferential surface, a second circumferential surface disposed radially outwards from the first circumferential surface, and a web portion connecting the first circumferential surface and the second circumferential surface, characterized in that the web portion includes a wave structure, the web portion having an inner wave profile at the first circumferential surface and an outer wave profile at the second circumferential surface, and the inner wave profile and the outer wave profile have a radius of curvature of 2 mm or more and 10,000 mm or less.