High-voltage power supply capable of automatically changing polarity

Abstract

The invention discloses a high-voltage power supply capable of automatically changing polarity. The high-voltage power supply consists of a direct current power supply circuit, a direct current constant voltage power supply circuit, a filter and energy storage circuit, a timing circuit, a control pulse generator circuit, a pulse transformer, a working indicator circuit, a switching circuit and a high-voltage electrode, wherein the timing circuit generates a first timing signal time interval and a second timing signal time interval; a switch between the pulse transformer and the filter and energy storage circuit is switched when the two time intervals are switched, so that the polarity of output voltage of the pulse transformer is changed; the control pulse generator circuit generates a pulse signal and applies the pulse signal to the switching circuit; the switching circuit is controlled to be connected when pulse comes and cut off when the pulse ends; and thus the corresponding high-voltage pulse voltage signals with reverse polarities in the first timing signal time interval and the second timing signal time interval are formed on the high-voltage electrode.

Description

technical field [0001] The invention relates to the fields of plasma and high-voltage static electricity, in particular to a high-voltage power supply capable of automatically changing poles. Background technique [0002] High-voltage power supply is a key component that must be used in electric dust removal equipment and room temperature plasma equipment, and its performance determines the performance of these two types of equipment. [0003] Electric dust removal equipment has been widely used in the occasion of purifying dusty waste gas. Its working principle is: apply a high-voltage electric field to the dust-containing exhaust gas to charge the dust. Under the action of the electric field force, the positively charged dust is deposited on the high-voltage negative electrode, and the negatively charged dust is deposited on the high-voltage positive electrode. There will be more and more dust deposited on the two high-voltage electrodes. If it is not removed in time, it ...

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Problems solved by technology

When these viscous dust accumulate to a certain extent, the performance of plasma equipment is also seriously affected: the number of high-energy electrons, OH, O3 decreases, and the ability to purify exhaust gas decreases

[0006] In summary, the accumulation of v

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