High-voltage floating high-frequency direct-current filament power supply

Abstract

The invention provides a high-voltage floating high-frequency direct-current filament power supply, which comprises an inversion part, a power transformer, a sampling part and a power supply control part, wherein the power supply control part, the inversion part, the power transformer and the sampling part are connected in sequence, and the power supply control part is also connected with the sampling part; the inversion part is used for converting direct current into high-frequency alternating current; the power transformer is used for converting the high-frequency alternating-current voltage output by the inversion part into a specified voltage value and then outputting a secondary alternating-current voltage; the sampling part is used for rectifying the secondary alternating-current voltage output by the power transformer into direct-current voltage, outputting the direct-current voltage to a magnetron filament and sampling output parameters of a filament power supply; and the power supply control part is used for converting the pulse frequency signal output by the sampling part into a voltage signal, and adjusting the output voltage and the output current of the filament power supply through the voltage signal to realize closed-loop control. The high-voltage floating high-frequency direct-current filament power supply has the advantages of small size and high frequency spectrum quality.

Description

technical field [0001] The invention belongs to the technical field of magnetrons, in particular to a high-voltage floating high-frequency DC filament power supply. Background technique [0002] The magnetron is a self-oscillating tube. After being heated by the filament, it can freely oscillate microwave signals of a certain frequency. [0003] The power supply of traditional microwave generators at home and abroad is basically in the form of power frequency AC filaments. Generally, power frequency transformers are used to isolate high voltages, which are generally large in size, and large inrush currents will be generated when they are turned on, shortening the life of the magnetron. The quality of the generated spectrum is poor and unstable, and cannot meet the standards for using microwave generator equipment in high-end industries such as synthetic diamond, material drying, thawing, and sewage treatment. [0004] The power frequency AC filament power supply of foreign ...

AI Technical Summary

Problems solved by technology

[0006] In view of the above problems, the present invention solves the technical problem of poor frequency spectrum produced by the power frequency AC filament, reduces the spectrum width, improves the spectrum quality, and simultaneously solves the problem of large volume of the power frequency filament

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