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Deuterium lamp driving circuit

A technology for driving circuits and deuterium lamps, which is applied in electric light sources, electrical components, lighting devices, etc., and can solve problems such as the inability to meet the application requirements of deuterium lamps emitting ultraviolet light of different intensities

Active Publication Date: 2013-08-28
BEIJING SDL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a deuterium lamp drive circuit to overcome the problem that the drive circuit used by the deuterium lamp in the prior art cannot meet the application requirements that the deuterium lamp emits ultraviolet light of different intensities in different occasions

Method used

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Embodiment Construction

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0059] The embodiment of the present invention discloses a deuterium lamp drive circuit, such as figure 2 As shown, it mainly includes:

[0060] A preheating circuit 101 for preheating the filament of the deuterium lamp before the deuterium lamp 104 is lit.

[0061] After the filament of the deuterium lamp 104 is preheated, the trigger circuit 102 is used to discharge and start the deuterium lamp 104 .

[0062] A pulse constant current drive circuit 103 use...

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Abstract

The invention discloses a deuterium lamp driving circuit, which comprises a preheating circuit, a triggering circuit and a pulse constant current driving circuit, wherein the preheating circuit is used for carrying out preheating on a lamp filament of a deuterium lamp before the deuterium lamp is turned on, the triggering circuit carries out discharging luminance build-up on the deuterium lamp after the preheating of the lamp filament of the deuterium lamp is completed, the pulse constant current driving circuit is used for regulating the luminous intensity of the deuterium lamp after the deuterium lamp carried out the luminance build-up, and the pulse constant current driving circuit comprises a constant current source circuit, a pulse control circuit and a selection circuit. Compared with the prior art, the invention discloses the deuterium lamp driving circuit. The pulse constant current driving mode is adopted in the invention for driving the control circuit, the work current of the deuterium lamp can be regulated at different gears, and the deuterium lamp can be controlled to output light at different intensities, so the application requirements in different occasions can be met.

Description

technical field [0001] The invention relates to the technical field of light emitting devices, in particular to a deuterium lamp driving circuit. Background technique [0002] With the development of science and technology, ultraviolet light is more and more used in materials science, environmental science, medical and health and other fields. A deuterium lamp is a light source that emits ultraviolet light, and the lamp is filled with deuterium gas. The luminescence mechanism of the deuterium lamp is: the thermal electrons emitted by the cathode of the filament are accelerated to the anode under the action of an electric field, and are excited by inelastic collision with deuterium gas molecules, thereby radiating a continuous spectrum of deuterium gas molecules. The deuterium lamp has gradually become an ideal ultraviolet light source because of its good stability, small size and long life. [0003] Most of the existing deuterium lamp driving circuits adopt a constant curr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/38
Inventor 崔厚欣
Owner BEIJING SDL TECH
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