Nanosecond rising edge high-voltage square wave pulse generator

Abstract

The invention discloses a nanosecond rising edge high-voltage square wave pulse generator, which comprises a direct current high-voltage power supply, a resistor, a pulse forming line, a pulse transmission line, a mercury switch and a control circuit, wherein the direct current high-voltage power supply is sequentially connected with the resistor, the pulse forming line, the mercury switch, the pulse transmission line and a load; and the control circuit controls the turning on and turning off of the mercury switch. By the nanosecond rising edge high-voltage square wave pulse generator, the divider ratio and response time of a voltage divider can be accurately calibrated; not only the rise time of output square waves is ensured, but also the output voltage of the direct current high-voltage power supply can be continuously regulated; the low-voltage control circuit and a high-voltage main circuit are electrically isolated; and the adopted mercury switch is inevitably at a broken position when a control end is broken, so that electrical connection is cut off, and the whole device is safer.

Description

Technical field: [0001] The invention relates to the technical field of high voltage and insulation, in particular to a nanosecond rising-edge high-voltage square wave pulse generator. Background technique: [0002] As a calibration signal source, the high-voltage square wave pulse generator is widely used in the high-voltage field, such as for calibrating the voltage division ratio and response time of the voltage divider, and for calibrating the partial discharge detection signal of the VHF method, etc. When calibrating the response time of the voltage divider, the shorter the rise time of the output signal of the high-voltage square wave pulse generator, the more accurate the measurement of the response time of the voltage divider. When calibrating the partial discharge detection signal of the VHF method, the shorter the rise time of the output signal of the high-voltage square wave pulse generator, the more VHF components it contains, and the more accurate the calibratio...

AI Technical Summary

Problems solved by technology

The voltage amplitude of the square wave pulse generated by electronic devices can only reach about 10V at the highest, and the rising edge can only reach the microsecond level at the highest, which cannot meet the requirements of high voltage calibration

Using a Marx generator can generate a pulse signal with a rising edge of ten nanoseconds, but the generated waveform is generally a double-exponential waveform without a flat top part, and the voltage amplitude is too high, which may damage the calibration object when used for calibration

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