Abstract: In a fluid treatment system includes a housing with fluid inlet and outlet for a process fluid, an irradiation zone disposed between the fluid inlet and fluid outlet, and at least one radiation source module with a radiation source having a discharge vessel with outer and inner wall. The inner wall encloses an internal volume with at least one opening and an internal electrode for igniting and maintaining a discharge. The radiation source module also includes a submersible frame with a guide to guide the process fluid into and out of the internal volume of the radiation source. The dissipation of the heat generated by the discharge in the discharge gap via a fluid flow in the internal volume of the lamp and in contact with the internal electrode is substantially more effective than dissipation via a cooling channel separated from the internal electrode. It is therefore substantially easier to maintain the discharge at an approximately optimal temperature.

Abstract: Transformers (1) for transforming primary signals into secondary signals comprise primary and secondary parts that comprise boards (11-14, 21-23) with turns. By introducing distances larger than zero between for example any pair of neighboring boards (11-14, 21-23), parasitic capacitances of the transformers (1) are reduced, and the secondary signals may comprise relatively fast/high voltage pulses having rise times >1 kV/?sec. To reduce proximity effects and any resulting losses, the primary and secondary boards (11-14, 21-23) may be stacked in interleaved ways. Such sandwich constructions reduce leakage inductances. In a particular direction, distances between subsequent primary boards (11-14, 21-23) and distances between subsequent combinations of primary and secondary boards (11-14, 21-23) are to be increased to further reduce capacitive losses in that particular direction.

Abstract: A dielectric barrier discharge (DBD-) lamp (1) comprising a discharge volume (2) which is delimited by a first and a second wall (4, 5) is disclosed, wherein both walls (4, 5) are exposed to different electrical potentials by means of a power supply (11) for exciting a gas discharge within the discharge volume (2). By providing at least one electrically conductive ignition aid or igniter which extends within the discharge volume (2) and which electrically contacts the first and the second wall (4, 5) with each other, a significant reduction of the initial ignition voltage of the lamp (1) can be obtained, especially after long pauses of operation of the lamp (1).

Abstract: The subject of the present invention is a dielectric barrier discharge (DBD-) lamp (1) for generating and emitting ultraviolet radiation comprising: —a housed discharge gap (3), whereby the housing has at least two walls, whereby at least one of the walls is a dielectric wall and at least one of the walls has an at least partly transparent part, a filling located inside the discharge gap (3), at least two electrical contacting means for electrical contacting associated with at least the two walls, respectively, whereby the discharge gap (3) is formed by at least two discharge sub-volumes (7) and/or discharge sub-areas (8) differing in at least one of their discharge parameters for realizing at least two dominant emission regimes and/or one emission regime with different radiant intensities and a method for producing said DBD-lamp (1).

Abstract: The present invention relates to an inrush current limiter device (4) for limiting inrushing current to a connectable load (3) comprising: at least one switchable IGBT-based limiter unit (5) for selectively limiting the inrushing current, having at least one current limiting conductor element for a limited leading of current and at least an IGBT-based switch (Q2), whereby the IGBT-based switch (Q2) is used as well as a controlled current limiter and as a by-pass element, and at least one control device (7) for controlling the IGBT-based switch (Q2), whereby the control device (7) comprises at least one IGBT-based switch supply (6) and means for realizing (8) a smooth flank of an output signal at the selected conductor element.

Abstract: The present invention relates to an adaptive driver for driving a gas discharge lamp and a method for operating a gas discharge lamp driven by an adaptive driver, especially a capacitive gas discharge lamp and more especially a dielectric barrier discharge (DBD) lamp in a permanent optimized mode comprising the steps: measuring, sensing, and/or detecting a signal representing the key values of the output of the driver (current, power, voltage, frequency), calculating at least one actual reference value for the quality of the discharge of said lamp, comparing said actual reference value to at least one predefined value for an optimized operation mode of said lamp, and adjusting a power supply according to the result of said comparing.

Abstract: The subject of the present invention is a lamp-ballast-system (1), especially a dielectric barrier discharge (DBD-) lamp-ballast-system for generating and/or emitting a radiation of ultraviolet (UV-)-light comprising: a lamp (2) having means for electrical contacting and a ballast (3) having a housing (4) accommodating at least a high-voltage part and a lamp support, connectable to and supplying the DBD-lamp (2) at least with electricity, whereby the electrical connection (5) between the DBD-lamp (2) and the ballast (3) is arranged cable-free.

Abstract: A lamp holder for a dielectric barrier discharge (DBD) lamp (1), especially for use in a treatment system or reactor or housing or in an irradiation apparatus, for radiating a medium like a fluid and/or a gas and/or a solid material by means of the DBD lamp (1) is disclosed. The holder substantially comprises two end caps (21, 31) at the axial ends of the lamp (1) and an inner electrode (23, 24; 33, 34) with a screw fitting (SF) for exerting an axial pressure on both axial ends of the lamp (I) via both end caps (21, 31) and with axial bores (25, 35) into an inner volume (14) for guiding especially a cooling medium and for electrically contacting an inner tube (II) of the lamp (1). The holder has a comparatively simple construction and can easily be assembled. Furthermore, even larger tolerances of the lamp length can be compensated and a reliable sealing of the inner volume (14) against the outside of the lamp (1) is achieved.

Abstract: Transformers (1) for transforming primary signals into secondary signals comprise primary and secondary parts that comprise boards (11-14, 21-23) with turns. By introducing distances larger than zero between for example any pair of neighboring boards (11-14, 21-23), parasitic capacitances of the transformers (1) are reduced, and the secondary signals may comprise relatively fast/high voltage pulses having rise times>1 kV/?sec. To reduce proximity effects and any resulting losses, the primary and secondary boards (11-14, 21-23) may be stacked in interleaved ways. Such sandwich constructions reduce leakage inductances. In a particular direction, distances between subsequent primary boards (11-14, 21-23) and distances between subsequent combinations of primary and secondary boards (11-14, 21-23) are to be increased to further reduce capacitive losses in that particular direction.

Abstract: An electronic circuit topology (1) for driving a predominantly capacitive load (2) with a primary circuit with several components, a secondary circuit with a predominantly capacitive load (2), and a transformer device (4) with a primary side (TX Ia) and a secondary side (TX Ib), connecting the primary circuit with the secondary circuit, the primary circuit components comprise: a source device (3), a drain device (5), and a switching device (6), the transformer device (4) is for transforming an input voltage-current-signal to a suitable output voltage-current signal for supplying the predominantly capacitive load (2), wherein the source device (3) is in serial connection with the transformer device (4), the drain device (5), and the switching device (6), whereby the transformer device (4) comprises means for functioning as a resonant tank circuit, as a transformer device (4) in forward mode, and as a transformer device (4) in flyback mode, so that an single-ended forward-flyback circuit is achieved.

Abstract: A dielectric barrier discharge (DBD-) lamp (1) comprising a discharge volume (2) which is delimited by a first and a second wall (4, 5) is disclosed, wherein both walls (4, 5) are exposed to different electrical potentials by means of a power supply (11) for exciting a gas discharge within the discharge volume (2). By providing at least one electrically conductive ignition aid or igniter which extends within the discharge volume (2) and which electrically contacts the first and the second wall (4, 5) with each other, a significant reduction of the initial ignition voltage of the lamp (1) can be obtained, especially after long pauses of operation of the lamp (1).

Abstract: The subject of the present invention relates to a high efficiently dielectric barrier discharge (DBD)-lamp for generating and/or emitting a radiation of ultraviolet (UV)-light comprising: a discharge gap (1) being at least partly formed and/or surrounded by at least an inner wall (2) and an at least partly transparent (3), each with an inner surface (2a, 3a), facing the discharge gap (1) and an outer surface (2b, 3b) arranged opposite of and directed away from the corresponding inner surface (2a, 3a), a filling located inside the discharge gap (1), at least two electrical contacting means (4), a first electrical contacting means (4a) at the inner wall (2) and a second electrical contacting means (4b) at the outer wall (3), and at least one luminescent coating layer (5) arranged at/on and at least partly covering at least a part of the respective wall's inner surface (3a), arranged such, that at least a part of the generated UV-light of a certain wavelength range can pass the luminescent coating layer (5) from

Abstract: A treatment system or treatment reactor (1) comprising at least one dielectric barrier discharge lamp (2) with a first electrode (20) and a housing (10) for containing a medium (3) like a fluid and/or a gas and/or a solid material which is to be treated by means of the radiation generated by the lamp (2) is disclosed which is especially characterized in that at least one second electrode of at least one lamp (2) is provided in the form of at least one intermediate counter electrode (3, 4) which is positioned within a volume (31) between at least one dielectric barrier discharge lamp (2) and the housing (10). By this, influences of the treated medium on the electrical behavior of the treatment system or reactor (1) and especially power losses in the medium can be avoided or considerably be decreased. Furthermore, losses of the lamp light due to absorption and/or shadowing at an outer electrode surrounding the lamp are avoided as well.

Abstract: The subject of the present invention is a dielectric barrier discharge (DBD-) lamp (1) for generating and emitting an ultraviolet radiation with ignition aid comprising: a discharge gap (2) being at least partly formed and/or surrounded by at least an inner wall (5) and an outer wall (4), whereby at least one of the walls (4, 5) is a dielectric wall and at least one of the walls (4, 5) has an at least partly transparent part, a filling located inside the discharge gap (2), at least two electrical contacting means, a first mean for electrical contacting associated with the outer wall (4) and a second mean for electrical contacting associated with the inner wall (5), whereby at least one multifunctional means (3) is arranged adjacent to the discharge gap (2) functioning as guiding aid and as ignition aid.

Abstract: In a fluid treatment system comprising a housing with a fluid inlet and a fluid outlet for a process fluid, an irradiation zone disposed between the fluid inlet and fluid outlet, and at least one radiation source module comprising at least one radiation source comprising a discharge vessel with an outer wall and an inner wall, the inner wall enclosing an internal volume with at least one opening and means for igniting and maintaining a discharge, the radiation source module also comprising a submersible frame with guiding means to guide the process fluid into and out of the internal volume of the radiation source. The dissipation of the heat generated by the discharge in the discharge gap via a fluid flow in the internal volume of the lamp and in contact with the internal electrodes is substantially more effective than dissipation via a cooling channel separated from the internal electrode. It is therefore substantially easier to maintain the discharge at an approximately optimal temperature.

Abstract: An electronic circuit topology (1) for driving a predominantly capacitive load (2) with a primary circuit with several components, a secondary circuit with a predominantly capacitive load (2), and a transformer device (4) with a primary side (TX 1a) and a secondary side (TX 1b), connecting the primary circuit with the secondary circuit, the primary circuit components comprise: a source device (3), a drain device (5), and a switching device (6), the transformer device (4) is for transforming an input voltage-current-signal to a suitable output voltage-current signal for supplying the predominantly capacitive load (2), wherein the source device (3) is in serial connection with the transformer device (4), the drain device (5), and the switching device (6), whereby the transformer device (4) comprises means for functioning as a resonant tank circuit, as a transformer device (4) in forward mode, and as a transformer device (4) in flyback mode, so that an single-ended forward-flyback circuit is achieved.

Abstract: The subject of the present invention is a lamp-ballast-system (1), especially a dielectric barrier discharge (DBD-) lamp-ballast-system for generating and/or emitting a radiation of ultraviolet (UV-)-light comprising: a lamp (2) having means for electrical contacting and a ballast (3) having a housing (4) accommodating at least a high-voltage part and a lamp support, connectable to and supplying the DBD-lamp (2) at least with electricity, whereby the electrical connection (5) between the DBD-lamp (2) and the ballast (3) is arranged cable-free.

Abstract: A lamp holder for a dielectric barrier discharge (DBD) lamp (1), especially for use in a treatment system or reactor or housing or in an irradiation apparatus, for radiating a medium like a fluid and/or a gas and/or a solid material by means of the DBD lamp (1) is disclosed. The holder substantially comprises two end caps (21, 31) at the axial ends of the lamp (1) and an inner electrode (23, 24; 33, 34) with a screw fitting (SF) for exerting an axial pressure on both axial ends of the lamp (I) via both end caps (21, 31) and with axial b ores (25, 35) into an inner volume (14) for guiding especially a cooling medium and for electrically contacting an inner tube (II) of the lamp (1). The holder has a comparatively simple construction and can easily be assembled. Furthermore, even larger tolerances of the lamp length can be compensated and a reliable sealing of the inner volume (14) against the outside of the lamp (1) is achieved.

Abstract: The present invention relates to an adaptive driver for driving a gas discharge lamp and a method for operating a gas discharge lamp driven by an adaptive driver, especially a capacitive gas discharge lamp and more especially a dielectric barrier discharge (DBD) lamp in a permanent optimized mode comprising the steps: measuring, sensing, and/or detecting a signal representing the key values of the output of the driver (current, power, voltage, frequency), calculating at least one actual reference value for the quality of the discharge of said lamp, comparing said actual reference value to at least one predefined value for an optimized operation mode of said lamp, and adjusting a power supply according to the result of said comparing.

Abstract: The present invention relates to an inrush current limiter device (4) for limiting inrushing current to a connectable load (3) comprising: at least one switchable IGBT-based limiter unit (5) for selectively limiting the inrushing current, having at least one current limiting conductor element for a limited leading of current and at least an IGBT-based switch (Q2), whereby the IGBT-based switch (Q2) is used as well as a controlled current limiter and as a by-pass element, and at least one control device (7) for controlling the IGBT-based switch (Q2), whereby the control device (7) comprises at least one IGBT-based switch supply (6) and means for realizing (8) a smooth flank of an output signal at the selected conductor element.