Large-scope linearly-adjusted high-precision high voltage circuit

Abstract

The invention provides a large-scope linearly-adjusted high-precision high voltage circuit, mainly comprising a transformer, a voltage-doubling rectifier circuit, a reactive circuit, an integral adjuster and a switch circuit. The large-scope linearly-adjusted high-precision high voltage circuit is characterized by also comprising a linear voltage stabilizer circuit; two input terminals of the switch circuit are connected with the control signals of the two MOSFETs; the output terminals of the switch circuit are connected with two ends of the primary coil of the transformer; the positive terminal of the integral adjuster is connected with a high-voltage setting signal that is 1 / 2000 of the high-voltage output voltage; a voltage adjusting pin of the linear voltage stabilizer circuit is connected with the output terminal of the integral adjuster; the output terminal of the linear voltage stabilizer circuit is connected with a middle tap of a primary coil of the transformer; and the output terminal can realize the aim of continuously adjusting the voltage from 0V to 11.25V. The MOSFET adopts the Logic Level type IRLR120N of IR Corporation; the grating driving signal of the MOSFET is directly generated by an external control circuit such as FPGA or singlechip and the like; when the external control circuit does not output the grating driving signal, the high-voltage circuit is arranged in a nonworking state, thus realizing the aim of enabling and forbidding the high-voltage output.

Description

technical field [0001] The invention relates to a large-scale linear adjustable high-precision high-voltage circuit, which can be used for the measurement of space low-energy (tens of eV to tens of keV) ions or electrons, and specifically relates to a large-scale linear adjustable High-precision high-voltage circuit. Background technique [0002] In the measurement of space low energy (tens of eV to tens of keV) ions or electrons, the sensor generally uses an electrostatic analyzer. Electrostatic analyzers are used to select ions or electrons of a specific energy-to-charge ratio (E / q) into the sensor interior. E / q is proportional to the voltage applied by the electrostatic analyzer, so in order to realize the measurement of ions or electrons with energies ranging from tens of eV to tens of keV, the voltage on the electrostatic analyzer is usually required to be continuously available from several volts to several thousand volts. Adjustment, and in order to achieve accurate...

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Problems solved by technology

In this structure, the center tap of the transformer plus a fixed power supply (such as +12V) controls the conduction degree of the two triodes through the output voltage of the integral regulator, thereby controlling the input voltage of the primary coil of the transformer, and finally realizing the control of high-voltage output, but the structure of The disadvantage is that the triode works in the linear region most of the time (it only works in the saturation region when it outputs the highest voltage), so the power consumption is relatively large; in addition, the output voltage of this structure is not stable when the high voltage output is low (such as a few volts) , the specific circuit such as figure 1 shown

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