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Special high-voltage power supply of zinc element hollow cathode lamp

A hollow cathode lamp, high-voltage power supply technology, applied in electric light sources, light sources, electrical components, etc., can solve the problems of reducing power conversion efficiency, service life, stability and reliability, and load effective power reduction, etc. The effect of high steady flow accuracy and small size

Active Publication Date: 2010-06-16
东文高压电源(天津)股份有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the zinc lamp load has a large load dynamic range from ignition to steady-state operation, this single control method will cause a decrease in the effective power of the load, and at the same time reduce the conversion efficiency of the power supply and the service life of the lamp. Increase the loss of the whole machine, increase the volume, and affect the stability and reliability of long-term work

Method used

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  • Special high-voltage power supply of zinc element hollow cathode lamp
  • Special high-voltage power supply of zinc element hollow cathode lamp
  • Special high-voltage power supply of zinc element hollow cathode lamp

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Embodiment Construction

[0015] Such as figure 1 , 2 As shown in , 3 and 4, the high-voltage power supply dedicated to zinc element hollow cathode lamps includes a power supply circuit installed in the housing, and is characterized in that: the power supply circuit is welded with connector 1, connector 2, and connector 3 status indicators 4; The power supply circuit consists of an auxiliary circuit, a pre-stable control circuit, a pre-stable drive circuit, an output control and feedback circuit, an output drive and an output circuit to form a closed-loop circuit, and the pre-stable control circuit is connected to the pre-stable drive circuit;

[0016] The pre-stabilized output part of the power supply uses a fixed-frequency current-mode switch control chip, and the pre-stabilized output is regulated by feedback control of its output duty cycle. The response time of this circuit is fast, and the current sensing and limiting circuit is simple and flexible, and can effectively suppress noise interferenc...

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PUM

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Abstract

The invention relates to a special high-voltage power supply of a zinc element hollow cathode lamp, which comprises a power supply circuit, wherein the power supply circuit is installed in a shell, and connectors and a connector state indicating lamp are welded on the power supply circuit; the power supply circuit forms a closed loop circuit by an auxiliary circuit, a prestabilizing control circuit, a prestabilizing drive circuit, an output control and feedback circuit and an output drive and output circuit; and the prestabilizing control circuit is connected with the prestabilizing drive circuit. The overall unit has the internal adjustment and external monitoring function on an anode current (a lamp current), good long-term stability, small temperature drift, high reliability, compact structure, small overall dimension relative to similar units, lighter weight and easy installation; and the output anode current has small ripple wave and high stabilized current precision.

Description

technical field [0001] The invention relates to a special high-voltage power supply for zinc element hollow cathode lamps widely used in atomic absorption spectrometers, atomic absorption spectrophotometers and atomic fluorescence analyzers. Background technique [0002] Existing special power supply products for zinc element hollow cathode lamps, most of the control parts use pulse width modulation (PWM) to control and adjust the output voltage and current. Since the zinc lamp load has a large load dynamic range from ignition to steady-state operation, this single control method will cause a decrease in the effective power of the load, and at the same time reduce the conversion efficiency of the power supply and the service life of the lamp. The loss of the whole machine is increased, the volume is increased, and the stability and reliability of long-term work are affected. Contents of the invention [0003] In view of the deficiencies in the prior art, the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/282
Inventor 刘云滨殷生鸣于亮
Owner 东文高压电源(天津)股份有限公司
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