Device for measuring high-voltage pulse power supply of xenon lamp of laser device

Abstract

The invention relates to a device for measuring a high-voltage pulse power supply of a xenon lamp of a laser device, belonging to the technical field of measuring instruments. In the device, a peak value detection circuit is provided, wherein the peak value detection circuit comprises a voltage dividing circuit consisting of a high-voltage resistant mica electric capacitor and two sample-hold circuits consisting of two-stage operational amplifiers; when in use, a fast high-voltage pulse triggered by the high-voltage pulse power supply of the laser device xenon light is in sampling and holding, and the peak value of the fast high-voltage pulse is enabled to keep invariant for a period of time; the two sample-hold circuits play different roles, in particular the post level of operational amplifier which can prevent a sampled electrical level from falling for a long time and waits for an analog digital conversion of the post level. In a space between two pulses, when a first output voltage of the operational amplifier descends, two diodes can prevent the input voltage of the post level of operational amplifier from descending, thereby the post voltage output is more stable. The invention has high precision, favorable dynamic response specialty, small size, light weight, convenient and simple use and high practicality, and is suitable for measuring the high-voltage pulse power supply of the xenon lamp of a high repetition frequency laser device.

Description

technical field [0001] The invention relates to a measuring device for a laser xenon lamp high-voltage pulse power supply, which belongs to the technical field of measuring instruments. Background technique [0002] The xenon lamp of the high repetition rate laser needs a pulse voltage of 10-20KV to ignite it. Therefore, the laser xenon lamp has a high-voltage pulse power supply that can output a pulse voltage of 10-20KV. The high-voltage pulse of the technical index becomes the key to the quality of the product. Since the trigger voltage of the laser is a fast high-voltage pulse, it cannot be directly measured. At present, the detection of the pulse voltage parameters has been using the electrostatic voltage detection instrument or the method of cooperating with the high-voltage probe and the oscilloscope. The existing electrostatic voltage detection instrument is bulky and heavy, and has poor stability. Measuring with an oscilloscope is not only expensive, but also compl...

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Problems solved by technology

[0003] The object of the present invention is to provide a measuring device for a laser xenon lamp high-voltage pulse power supply, which solves the problems of large volume, poor stability and high cost in the current detection of electrostatic voltage detection instruments or high-voltage probes and oscilloscopes. Through the present invention, 5- 20KV, 0.2-5uS, 40Hz-2KHz high-voltage pulse for measurement, high precision, good dynamic response characteristics, small size, light weight, easy to use

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