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Power supply of deuterium lamp

A deuterium lamp and power supply technology, applied in the field of light-emitting devices, can solve the problems of high price and complicated power supply, and achieve the effects of high current stability, small size and high efficiency

Active Publication Date: 2015-05-13
浙江嘉科电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commercialized intelligent deuterium lamp power supply is mainly imported from abroad, which is expensive
The deuterium lamp power supply is relatively complicated, and the filament needs to be preheated and glowed

Method used

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  • Power supply of deuterium lamp
  • Power supply of deuterium lamp
  • Power supply of deuterium lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] like figure 2 As shown, a deuterium lamp power supply, including:

[0033] Before the deuterium lamp is lit, the deuterium lamp filament preheating circuit is used to preheat the filament of the deuterium lamp;

[0034] After the filament preheating of the deuterium lamp is completed, the deuterium lamp ignition trigger circuit for discharging and starting the deuterium lamp;

[0035] After the deuterium lamp is ignited, the deuterium lamp constant current circuit stabilizes the luminous intensity of the deuterium lamp;

[0036] During the operation of the deuterium lamp, the single-chip microcomputer control circuit that plays a controlling role.

[0037] like image 3 As shown, a multi-output switching power supply of a deuterium lamp power supply, the AC voltage at the input end is filtered by the filter EMI, the rectifier bridge V1, and the capacitor C3 to form a DC high voltage; the integrated circuit N1 includes PWM and MOSFETs, and chops the DC high voltage i...

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PUM

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Abstract

The invention discloses a power supply of a deuterium lamp. The power supply of the deuterium lamp solves the problems that a traditional deuterium lamp is complex in circuit, low in efficiency and poor in reliability. The power supply of the deuterium lamp comprises a deuterium lamp filament preheat circuit used for pre-heating the filament of the deuterium lamp before the deuterium lamp is lighted, a deuterium lamp igniting trigger circuit used for discharge-ignition of the deuterium lamp after the filament of the deuterium lamp is pre-heated, a deuterium lamp constant current circuit used for stabilizing the light intensity of the deuterium lamp after the deuterium lamp is ignited, and a single chip microcomputer control circuit playing a role of controlling during the operation of the deuterium lamp. The power supply of the deuterium lamp has the advantages that the size is small, efficiency is high, ignition can be achieved easily and a deuterium lamp which can not be ignited by a traditional deuterium lamp power supply can be lightened with the power supply of the deuterium lamp, the current of the deuterium lamp is high in stability and low in noise, and the protection function is good and automatic shutdown is achieved when the deuterium lamp is aged or fails.

Description

technical field [0001] The invention relates to the technical field of light emitting devices, in particular to a deuterium lamp power supply. Background technique [0002] Deuterium lamp is an ideal ultraviolet light source for photometric analysis instruments, and is widely used in biochemical analysis instruments. Its spectrum is continuous, with a wavelength of 190nm to 400nm. At present, the commercialized smart deuterium lamp power supply is mainly imported from abroad, which is expensive. The deuterium lamp power supply is relatively complicated, and the filament needs to be preheated and glowed. After glowing, keep a voltage of 70V~80V between the anode and cathode of the deuterium lamp, so that the deuterium lamp can be lit and emit ultraviolet light. In order to maintain the stability of the brightness of the deuterium lamp and prolong the life of the deuterium lamp, the deuterium lamp should maintain a high-precision current of 300mA after ignition. [0003] M...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/14
Inventor 钱跃国李惺沈兴炎
Owner 浙江嘉科电子有限公司
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