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Fronius International Gmbh patents


Recent patent applications related to Fronius International Gmbh. Fronius International Gmbh is listed as an Agent/Assignee. Note: Fronius International Gmbh may have other listings under different names/spellings. We're not affiliated with Fronius International Gmbh, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "F" | Fronius International Gmbh-related inventors


Circuit arrangement for controlling a transistor

A circuit arrangement for controlling a transistor with an insulated gate, a gate driver for generating a driver signal, and a capacitor parallel to the gate-source path of the transistor, wherein the gate driver is designed for generating a driver signal greater than or equal to zero volts, an inductor is provided for forming a resonant circuit with the capacitor, and a switching element is provided in the resonant circuit, which is designed for interrupting the resonant circuit after recharging the capacitor. The part of the circuit arrangement downstream of the gate driver is designed for exclusive voltage supply using the driver signal of the gate driver, and the switching element is formed by an additional transistor, a first freewheeling diode is arranged parallel to the switching element, and the inductor of the resonant circuit is arranged between the additional transistor and the gate of the transistor.. ... Fronius International Gmbh

Power supply unit for a resistance welding apparatus

A power supply unit for a resistance welding apparatus, said power supply unit comprising a converter circuit adapted to convert an alternating power supply current, ac, applied via a residual current protection circuit to an input of said converter circuit into a pulsed electrical current supplied from an output of said converter circuit to a primary coil of a transformer of said resistance welding apparatus, and at least one switching element provided between the output of said converter circuit and protective earth.. . ... Fronius International Gmbh

Welding device with a laser preheater for filler wire

The invention relates to a welding device (1) having a welding torch (2), a feeder (3) for feeding a melting filler material (4) at a feed rate (v) to a weld (s), where the filler material (4) is melted with the aid of an electric arc (l), and a pre-heater (9) for heating the filler material (4) upstream of the weld (s) by means of a laser beam (7) having a laser power (p) and generated in a laser device (6). For space-saving and safe heating of the filler material (4) upstream of the weld (s), the pre-heater (9) includes a feed channel (5) for the filler material (4), and at least one deflector (8) is attached to the pre-heater (9) for deflecting the laser beam (7) to the filler material (4) in such a way that the laser beam (7) strikes the filler material (4) inside the feed channel (5) of the pre-heater (9).. ... Fronius International Gmbh

Resonant converter having a transformer with central point tap

In order to set the output voltage of a resonant converter to a desired value by means of a simple additional circuit while the resonant converter is in open circuit operation, it is intended that at least one capacitor each (c1, c2) is connected in parallel to the electrical switching elements (s1, s2) of the secondary side of the resonant converter (1).. . ... Fronius International Gmbh

Power transmission system

Power transmission system (1) for power transmission of electric power (p) from a power source (2a) to a power sink (4a) which is connected to the power source (2a) via a power transfer cable (3), wherein the power source (2a) has a first pole with a first electric potential, which is connected via parallel current lines of a first conducting pair of the power transfer cable (3) to a first pole of the power sink (4a), and a second pole with a second electric potential, which is connected via further parallel current lines of a second conducting pair of the power transfer cable (3) to a second pole of the power sink (4a), wherein, during the power transmission via the current lines, a user data signal can be transmitted between the power source (2a) and the power sink (4a) via at least one conducting pair with current lines of the same electric potential, uninfluenced by the power transmission.. . ... Fronius International Gmbh

Welding wire cartridge with moisture protection

In order to reduce the accumulation of moisture on a welding wire (2, 2′, 2″) arranged in a welding wire cartridge (1, 1a, 1b) or to remove existing moisture in a simple and reliable manner, it is provided that a flow (d1) of purging air supplied to the welding wire cartridge (1, 1a, 1b) is adjusted by a flow control unit (14), the purging air is supplied to the flow control unit (14) at a first pressure (p) and is discharged at a purging air discharge (24) of the welding wire cartridge (1, 1a, 1b) at a third pressure (pat), and at a purging air feed (15) of the welding wire cartridge (1, 1a, 1b) a second pressure (p1) at the purging air feed (15) that is lower than the first pressure (p) results from the adjusted flow (d1), the third flow (pat) and a flow resistance between the purging air feed (15) and the purging air discharge (24), the relative humidity (rf1) of the purging air being reduced by the relief of pressure from the first pressure (p) to the second pressure (p1).. . ... Fronius International Gmbh








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