Abstract: The present invention relates to a quick and low-stress setting chemical formulation for construction, containing at least one binding agent on the basis of calcium sulfate, at least an ettringite-forming agent, at least one activator, at least one filler, at least one redispersable dispersion powder and optionally additives and to the use of the chemical formulation for construction for producing thin-layered balancing masses, self running and solid fillers, screed binding agents or screed mortars, tile adhesive mortars, jointing mortars and sealing sludges.

Abstract: A resonant converter (100) includes at least two transistor switches (S1-S8), out of which at least two are connected in parallel, and out of which a number of available transistor switches (S1-S8) is available for performing a current switching of the resonant converter (100). A controlling module (101) is configured to determine whether an output power of the resonant converter (100) is below an output power threshold value. A switching module (102) is configured to employ a reduced number of transistor switches out of the number of available transistor switches (S1-S8), if the output power of the resonant converter (100) is below the output power threshold value. The reduced number is at least declined by one compared to the number of available transistor switches (S1-S8). The switching module (102) is configured to permute the employed reduced number of transistor switches over the available transistor switches (S1-S8).

Abstract: The present invention relates to a quick and low-stress setting chemical formulation for construction, containing at least one binding agent on the basis of calcium sulfate, at least an ettringite-forming agent, at least one activator, at least one filler, at least one redispersable dispersion powder and optionally additives and to the use of the chemical formulation for construction for producing thin-layered balancing masses, self running and solid fillers, screed binding agents or screed mortars, tile adhesive mortars, jointing mortars and sealing sludges.

Abstract: The present invention relates to a resonant converter (100) comprising: at least two transistor switches (S1-S8), out of which at least two are connected in parallel, and out of which a number of available transistor switches (S1-S8) is available for performing a current switching of the resonant converter (100); a controlling module (101) configured to determine whether an output power of the resonant converter (100) is below an output power threshold value; and a switching module (102) configured to employ a reduced number of transistor switches out of the number of available transistor switches (S1-S8), if the output power of the resonant converter (100) is below the output power threshold value, wherein the reduced number is at least declined by one compared to the number of available transistor switches (S1-S8), wherein the switching module (102) is configured to permute the employed reduced number of transistor switches over the available transistor switches (S1-S8).

Abstract: The present invention relates to semiconductor technology. In particular, the present invention relates to high-speed, high voltage switching for a high voltage generator for an X-ray system. Switching elements, e.g. IGBTs or MOS-FETs, are employed for high-speed high voltage switching. However, circuit elements or parasitic elements at an input of the switching element limit the switching speed of the switching element. The present invention proposes applying a higher than allowed voltage to the input of the switching element, e.g. a voltage higher than the maximum allowed gate voltage of an IGBT or MOS-FET, to increase switching speed. A feedback loop is provided for save operation.