Abstract:
Es wird ein Ableiter (30) zum Schutz vor Überspannungen beschrieben aufweisend ein Gehäuse (31), wobei das Gehäuse (31) als Außenelektrode fungiert, eine zentrale Elektrode (33), wobei die zentrale Elektrode (33) vollständig in einem Innenbereich (31a) des Gehäuses (31) angeordnet ist, und wobei zwischen der zentralen Elektrode (33) und dem Gehäuse (31) ein Entladungsbereich ausgebildet ist, einen Keramikkörper (36) zur elektrischen Trennung von Gehäuse (31) und zentraler Elektrode (33), wobei der Keramikkörper (36) versetzt zu dem Entladeraum angeordnet ist, ein Abschirmelement (32), wobei das Abschirmelement (32) an einer Innenseite (31b) des Gehäuses (31) angeordnet ist und wobei sich das Abschirmelement (32) über eine gesamte Längsausdehnung der zentralen Elektrode (33) hinweg entlang der Innenseite (31b) des Gehäuses (31) erstreckt.
Abstract:
The present invention relates to the field of flash tubes for photographic use, in particular to a flash tube adapted to provide a light output adapted to FP-sync, Flat Peak. The flash tube comprises a length of glass tubing 42 enclosing a gas 43 for use in the flash tube 41, a cathode 44 inside a first end part 46 of glass tubing 42 and an anode 44 inside a second end part 47 of glass tubing 42. The cathode 44 comprises an element 50 that helps to ionize the gas 43 that is wound around the cathode 44, such that a spark stream starts from the upper part 48 of the cathode 44 and is prevented from spreading down wards on the cathode 44 and changing the arc length during the light output adapted to FP-sync.
Abstract:
Un éclateur selon l'invention comporte : - un premier corps portant un premier support (12) d'électrode associé à une première électrode (2) présentant une première extrémité (4) d'électrode, - un second corps portant un second support (14) d'électrode associé à une seconde électrode (6) disposée en vis-à-vis de la première extrémité (4) d'électrode, et - un bras de liaison (10) reliant le premier corps au second corps. Le premier corps et le second corps présentent une forme extérieure globalement cylindrique et sont alignés sur un même axe longitudinal (22). La première extrémité (4) d'électrode est décalée par rapport à l'axe longitudinal (22) du côté opposé au bras de liaison (10). L'invention concerne également un dispositif de génération d'arc électrique comportant un tel éclateur.
Abstract:
A high voltage switch is provided, comprising a pair of electrodes housed within a high pressure gas vessel and separated by a nominal distance D. At least one of the electrodes is provided with raised surface features each having a radius of curvature that is significantly smaller than the electrode separation D. Preferably one of the electrodes is flat-faced. Preferred gas pressures within the pressure vessel are in the range 300 psi to 1200 psi. When used to switch voltages of several hundred kilovolts, an operational life for the electrodes of between 400 and 1000 hours has been achieved.
Abstract:
A feedthrough device for protecting a system from an electrical transient may include a housing having a first end and a second end spaced apart from the first end in a longitudinal direction. A conductive line may extend through the housing from the first end to the second end of the housing. The conductive line may define an input end proximate the first end of the housing and an output end proximate the second end of the housing for connecting the feedthrough device with the system to be protected. A filter may be disposed within the housing and coupled with the conductive line at a first location. A gas discharge tube may be disposed within the housing and coupled with the conductive line at a second location on the conductive line that is proximate the filter and between the input end of the conductive line and the first location.
Abstract:
The object of the invention is a gas discharge tube for surge protection of different electronic devices, more precisely a gas discharge tube with a very thin design. The flat gas discharge tube includes a ceramic insulator (1), two metal electrodes (2,3), gas filling and a graphite coating (5) on the ceramic insulator, and is characterized in that the ceramic insulator is cylindrically shaped and has a wider ring (1a), a narrow ring (1b) with metallized layers (6,6') and a wider ring (1d), which is formed into a tip in the direction towards the centre of the ceramic insulator, wherein the distance between the planes with metallization is smaller than or equal to the distance of the inner wall (1d', 1d") of the ceramic tip. The insulation distance on the ceramic insulator between the electrodes is increased with the shape of the ceramic insulator and the shape of electrodes, which enables optimal performance of the gas discharge tube.
Abstract:
The purpose of the present invention is to prevent excessive variations, after application of a load, in the DC priming voltage Uag of gas-filled discharge gaps that include a vitreous-type electrode-activation mass comprising a plurality of components. To this end, the base components of the electrode-activation mass (4) include not only sodium silicate, cesium silicate and titanium, but also potassium silicate and cesium tungstate.
Abstract:
Gas-filled discharge paths such as overvoltage branch circuits and spark arresters can have a short ignition time in a dark space due to the use of a special activation mass. In order to simplify the production of such discharge paths, entirely nickeled electrodes (1, 2; 11) are incorporated. Furthermore, in addition to titan, nickel in metallic form is added to said special activation mass (4).