Ultraviolet flash xenon lamp integration module special for analytical instrument
A technology of analytical instruments and integrated modules, which is applied in the design field of integrated modules of ultraviolet flash xenon lamps for analytical instruments, can solve the problems of complex circuit design, high voltage risk, easy generation of electromagnetic radiation, and interference with the normal operation of precision electronic components, etc., to achieve triggering The effect of good precision consistency, compact structure and long service life
Inactive Publication Date: 2011-02-09
中科天融(北京)科技有限公司
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Problems solved by technology
The driving power supply voltage of the flash xenon lamp needs to reach 700-1000V, and the trigger voltage needs to reach 5000-7000V. The circuit design has certain complexity and high-voltage danger; because the analysis instrument requires high stability of the light source, so in the circuit design and device selection Corr
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[0014] Depend on figure 1 It can be seen that the integrated module of ultraviolet flash xenon lamps for analytical instruments is composed of a control circuit 3 , a high-voltage drive power supply 4 , a high-voltage trigger circuit 5 and a flash xenon lamp 8 , and is provided with a lamp holder 7 . Among them, the flash xenon lamp is a component that emits ultraviolet spectrum. The driving power is input by voltage, and a high voltage is applied to both ends of the electrodes of the xenon lamp through boosting. The high-voltage trigger circuit provides high-voltage pulses to trigger arc discharge. The control circuit is used to provide internal trigger signals. External power supply input 1, the other end is external trigger signal input 2, and 6 in the figure is the discharge capacitor.
[0015] Depend on figure 2 It can be seen that the flash xenon lamp is composed of cathode 9, anode 10, cathode side trigger probe A 11 and anode side trigger probe B 12, spark generator ...
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The invention relates to an ultraviolet flash xenon lamp integration module special for an analytical instrument, comprising a flash xenon lamp, a driving power supply and a control circuit. The ultraviolet flash xenon lamp integration module is characterized in that the flash xenon lamp and the driving power supply thereof and the control circuit are integrated into a small-sized module; an imported Hamamatsu flash xenon lamp L4646 is adopted as the flash xenon lamp and has the advantages of high accuracy, good stability, and the like; parts, i.e. an SG3524 power supply chip, a high-frequency transformer, and the like, are adopted as the circuit part of the high-voltage driving power supply and have feedback design so as to ensure that power supply output ripples are less than 0.05 percent; and an imported trigger transformer ZS1052AC of a PerkinElmer company is adopted as a high-voltage trigger circuit and has good trigger accuracy consistency so as to ensure the accuracy of the flash intensity of the flash xenon lamp. The invention has the advantages of small size, long service life, high precision, adjustable internal light intensity and internal/external trigger functions, can be integrated into the analytical instrument and meet the requirements of the analytical instrument (in particular an on-line monitoring instrument) on an ultraviolet light source and is suitable for the ultraviolet flash xenon lamps of various analytical instruments.
Description
technical field [0001] The invention belongs to the technical field of research and analysis instruments, in particular to the design of an integrated module of an ultraviolet flash xenon lamp dedicated to an analysis instrument. It can be applied to ultraviolet light source components in various analytical instruments, especially suitable for online monitoring and analysis instruments of gas concentration in the environmental protection industry. Background technique [0002] At present, in the design of analytical instruments, in order to detect the concentration of some gases with absorption characteristics in the ultraviolet spectrum range, it is necessary to use a light source that can emit ultraviolet spectrum. The general solution is to use a deuterium lamp or a xenon lamp. The advantage of the deuterium lamp is that the light intensity is stable, but due to its high power, high calorific value, and short life, it cannot meet the needs of long-term on-line monitoring ...
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Inventor 王昕竑郭炜胡刚任岩峰刘建鑫
Owner 中科天融(北京)科技有限公司
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