Voltage amplifier device for spatial low-energy plasma detector

Abstract

The invention discloses a voltage amplifier device for a space low-energy plasma detector. The voltage amplifier device for the space low-energy plasma detector comprises an amplifier control circuit,a optocoupler control circuit and a high-voltage optocoupler device which are connected in sequence, and a voltage sampling circuit which is connected with the optocoupler control circuit and the high-voltage optocoupler devices, wherein the high-voltage optocoupler device is connected between a high-voltage power supply input end and one end of a high-voltage resistor, and the other end of the high-voltage resistor is grounded; the number of the amplifier control circuit and the number of the high-voltage resistor are each one, the number of the high-voltage optocoupler devices, the number of the voltage sampling circuits and the number of the optocoupler control circuits are each at least two, the number of the high-voltage optocoupler devices is equal to the number of the optocoupler control circuits, and the number of the voltage sampling circuits is one more than the number of the high-voltage optocoupler devices. The device is small in size, light in weight, large in output voltage range, high in adjusting speed and suitable for supplying power to the electrode of the low-energy plasma detector.

Description

technical field [0001] The present invention generally relates to the technical field of space environment detection load equipment, and in particular to a voltage amplifier device for space low-energy plasma detectors. Background technique [0002] Low-energy plasma generally refers to plasma with energy lower than 50keV. The low-energy plasma detector is installed on the spacecraft to detect the energy and flux of the space low-energy plasma at the location of the spacecraft during flight. The main components of the instrument include: electrostatic deflection system (deflection pole), energy analysis system (electrostatic analyzer), counting system (microchannel plate) and electronics system, etc. From the perspective of the flight path, the elevation angle of the ions or electrons in the plasma is sequentially measured by the electrostatic deflection system, the energy-to-charge ratio is measured by the energy analysis system, and finally the azimuth and flux are measur...

AI Technical Summary

Problems solved by technology

However, in the existing high-voltage amplifiers, the output voltage is applied to both ends of a single high-voltage optocoupler.

The output voltage range of electronics is limited by the withstand voltage value of a single high-voltage optocoupler. The difference between the upper and lower limits of the output voltage generally does not exceed 8kV, and it is difficult to further increase the output voltage range.

[0005] From the above, in the prior art, the electronic device for powering the electrodes of the plasma detector has a relatively small adjustment range for the output voltage

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