The Design And Experimental Research Of A High Voltage Xe-flash Lamp Power Supply

With the rapid development of analytical instruments and analysis technologies, the demands of improved light source are also growing up. Because of high energy, high UV irradiance, and lower power disposal, short-arc spherical xenon lamp plays a more and more important role in the field of modern instrumental analysis. But the key technologies including lamp manufacture and the power supply are under the control of the advanced countries such as Japan and the United States. It is hard to buy the components of the lamp for for the domestic consumers with the difficult of long term to order, high cost, and not easy to use. Therefore, this paper presents a novel design of the power supply based on the theoretical principle, it is capable of driver the pulsed xenon lamp and have a specical function of digital interface, with which the digital communication is built, the function is much implemented At the last of this study, many experiments had completed to study the relationship between the output spectrum and our power supply.First, based on the theory of gas discharge progress of pulsed xenon lamp, the normal conditions required by flash is proposed. Moreever, according to the principles of switching power supply, a new topology of the key components of the power supply is finished by comparing multiple different topologies, which is made up of flyback topology and taken as the most suitable mode.Secondly, after actual testing, this design with the combination of the standard work condition and the flyback topology can drive the pulsed xenon lamp from Hamamatsu. And also, in the digital control mode, it can be controled by the host computor to precise adjust the main voltage and frequency pulsed.Finally, the experiment was developmented to verify the impact of the current sense resistor on the power working, as well as the output spectrum was tested when the man voltage and trigger voltage changed on the platform of flash spectrum testing, by which the design is modified further.Above all, this thesis designed a new power supply to drive the short arc xenon lamp.After the truly tested on the Japanese flash lamp, our work is of high stability, flexity to adjust main voltage, flexity to change the pulse frequency. On the basis of the supply, we study the relationships between the light output and the main voltage, the trigger signal andso on. This work is not only to meet the demands of the flash lamp’s driving, but also is sophasicated for the new creative structure development of analysis instrument.