High-pressure discharge lamp comprising a high-voltage impulse generator and method for producing a high-voltage impulse generator
A technology for pulse generators and high-pressure discharge lamps, applied in electric pulse generator circuits, parts of gas discharge lamps, discharge lamps, etc., can solve problems such as expensive, insufficient advantages, and elevated damaged lamps, and achieve easy breakdown , the effect of large time width and high capacitance
Inactive Publication Date: 2010-03-24
OSRAM GMBH
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Problems solved by technology
However, these devices cannot be implemented because on the one hand they are too expensive and, on the other hand, the advantages of installing these devices in the lamp cap are not sufficient, since there are still problems of delivering high voltages in the bulb
Therefore, the probability of damaging the lamp (such as insulation problems or breakdowns in the lamp cap) is strongly increased
Method used
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[0040] figure 1 The structure of the helical pulse generator 1 is shown in plan view. It consists of a ceramic cylinder 2 into which two different metallic conductors 3 and 4 are wound helically as film strips. The cylinder 2 is hollow inside and has a given inner diameter ID. The two inner contacts 6 and 7 of the two conductors 3 and 4 lie approximately opposite each other and are connected to one another via a spark gap 5 .
[0041] Only the outer conductor of the two conductors has a further contact 8 at the very edge of the cylinder. The other conductor ends open. These two conductors thus together form a waveguide in the dielectric medium (ceramic).
[0042] Helical pulse generators are wound from two ceramic membranes coated with a metal paste or constructed from two metal foils and two ceramic membranes. An important characteristic quantity here is the number of turns n, which should preferably be in the order of 5 to 100. The winding arrangement is then laminated a...
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Abstract
The invention relates to a compact high-voltage impulse generator based on a spiral impulse generator which is entirely or partially surrounded by a ferritic material. The invention also relates to acoating method for coating a spiral impulse generator with a ferritic layer, according to which the spiral impulse generator is either immersed into a low-viscosity slurry, and sintered at temperatures of between 500 DEG C and 900 DEG C once the slurry has been dried, or is surrounded by a ferritic casting compound which is then hardened thermally or by UV radiation. The invention also relates toa high-pressure discharge lamp comprising a discharge vessel which is received in an outer piston. An ignition device generating high-voltage impulses in the lamp is built into the lamp and is a spiral impulse generator received in the outer piston and acting as an ignition transformer due to the fact that it is entirely or partially surrounded by a ferritic material.
Description
technical field [0001] The invention is based on a high-voltage pulse generator according to the preamble of claim 1 . Such generators can be used in particular for lighting high-pressure discharge lamps for general lighting or for photographic purposes or for vehicles. Furthermore, the invention relates to a high-pressure discharge lamp with such a generator and a method for its production. Background technique [0002] The problem of starting high-pressure discharge lamps is currently solved by integrating the starting device into the ballast. This has the disadvantage that the feeder must be designed to withstand high voltages. [0003] In the past, repeated attempts have been made to integrate the ignition unit into the lamp. An attempt was made here to integrate the ignition unit into the lamp base. A particularly efficient and high-pulse ignition is achieved by means of so-called helical pulse generators, see US Pat. No. 3,289,015. Earlier, such arrangements were ...
Claims
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IPC IPC(8): H01J61/54H05B41/04F21Y101/00
CPCH01J61/547H03K3/53H01J61/34H01J61/82H05B41/04
Inventor 安德烈亚斯·克洛斯斯特芬·沃尔特
Owner OSRAM GMBH