Abstract: A test device to localize a partial discharge in or at an electrical component may include at least one antenna to capture an electromagnetic wave caused by a partial discharge in the electrical component. The test device includes multiple microphones arranged in an environment around the electrical component. The microphones capture sound waves caused by the partial discharge. It is examined if an intensity of the electromagnetic wave exceeds a first limit value and/or the intensity of the sound wave captured by one of the multiple microphones exceeds a second limit value. Depending on the captured sound wave and/or the electromagnetic wave and on the examination relating to the first and/or second limit value, a location of the partial discharge can be determined.

Abstract: A test device to localize a partial discharge in or at an electrical component may include at least one antenna to capture an electromagnetic wave caused by a partial discharge in the electrical component. The test device includes multiple microphones arranged in an environment around the electrical component. The microphones capture sound waves caused by the partial discharge. It is examined if an intensity of the electromagnetic wave exceeds a first limit value and/or the intensity of the sound wave captured by one of the multiple microphones exceeds a second limit value. Depending on the captured sound wave and/or the electromagnetic wave and on the examination relating to the first and/or second limit value, a location of the partial discharge can be determined.

Abstract: A compressor apparatus for the turbocharger of a piston engine is provided. The compressor apparatus includes a compressor for compressing a flowing medium to produce a compressed medium and a return device by which at least a partial stream of the compressed medium is fed anew to the compressor.

Abstract: A system for simple nucleic acid analysis is described in which the amplification space contains at least a part of the binding space. An additional improvement is achieved by the design of the binding or/and amplification space which is optionally surrounded by a heatable metal layer.

Abstract: The present invention concerns a method for the detection of nucleic acids on an analytical element which contains a sample application zone and a detection zone, the analytical element enabling liquid transport from the sample application zone to the detection zone, wherein a sample is applied to the sample application zone of the analytical element and the nucleic acids contained in the sample are denatured and can be detected qualitatively in the detection zone by hybridization with a detection probe and also quantitatively, preferably by means of marker groups. In addition new analytical elements and reagent kits for the detection of nucleic acids are provided.

Abstract: A system for simple nucleic acid analysis is described in which the amplification space contains at least a part of the binding space. An additional improvement is achieved by the design of the binding or/and amplification space which is optionally surrounded by a heatable metal layer.