The solid state switches are energized by a power supply comprising capacitors. A persistent challenge is the rating of these power supply capacitors: Especially for low frequency output signals down to DC the flyback energy due to the inductive components of low pass filter and load can charge the power supply capacitors up to voltages much greater than specified. To overcome rating problems the power supply capacitors are sometimes shunted by zener diodes. However, besides the additional circuitry efforts this measure causes additional heat losses. Thus, a more consequent solution would be desirable. Invention - Such a solution was recently developed at the Faculty of Process Engineering, Energy and Mechanical Systems at Cologne University of Applied Sciences. The innovative noCap technology not longer relies on power supply capacitors. The output stage switches moreover are immediately energized by an AC supply. With its novel power stage control method noCap maintains the outstanding power efficiency known from other Class-D designs.
email@example.com | TechnologieAllianz e.V.
Safety binding system for ski touring and telemarking
20.10.2016 | TechnologieAllianz e.V.
Enantiomerically pure chiral N-acyl-a-aminonitriles - Method for chemical production avoiding the need of toxic reagents
19.10.2016 | TechnologieAllianz e.V.
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
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Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
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Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
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