Abstract: A device for generating a magnetic field, the device comprises a coil configured to respond to an electric current, a magnetic core comprising poles configured to generate a magnetic field close to the poles, wherein the magnetic field makes a paramagnetic gas component vibrate and emit an acoustic signal, wherein the magnetic core is surrounded at least partly by the coil, and a substrate at least partly covered by the magnetic core and the coil.

Abstract: A device for generating a magnetic field, the device comprises a coil configured to respond to an electric current, a magnetic core comprising poles configured to generate a magnetic field close to the poles, wherein the magnetic field makes a paramagnetic gas component vibrate and emit an acoustic signal, wherein the magnetic core is surrounded at least partly by the coil, and a substrate at least partly covered by the magnetic core and the coil.

Abstract: A radiation source assembly for optical transducers used for the analysis of material components of media, whereby the radiation source assembly comprises: two thermal radiation sources (1, 2), of which the first radiation source (1) is located, in relation to the second radiation source, in such a position that it emits through the second radiation source (2); a band-stop filter (10) located between the first and the second radiation sources, so that the radiation (6) emitted by the first radiation source passes through it. Both thermal radiation sources (1, 2) comprise a substrate (3, 11) made of silicon, of a silicon mixture or of a silicon compound, and a recess (53) made in the substrate, and micro-filaments (4, 5), which are fastened at their ends to the outer surface (51, 52) of the substrate, their radiation (6, 8) emitting regions being at a distance (H) from the bottom surface (54) of the recess.