Drive circuit of piezoelectric ceramics atomization plate

Abstract

The invention discloses a drive circuit of a piezoelectric ceramics atomization plate. The drive circuit comprises an atomization plate and a high-frequency pulse generating circuit. The high-frequency pulse generating circuit consists of a power supply output terminal, a transformer, a first switching tube, a second switching tube and a switching tube control circuit. The transformer includes a first primary-side winding, a second primary-side winding, a first secondary-side winding and an iron core, wherein the units cooperate with each other; the first primary-side winding and the first switching tube are connected in series and then are connected in parallel to the power supply output terminal; the second primary-side winding and the second switching tube are connected in series and then are connected in parallel to the power supply output terminal; the switching tube control circuit outputs a first control signal and a second control signal; and the first control signal is inputted into the first switching tube and the second control signal is inputted into the second switching tube.

Description

technical field [0001] The invention relates to the technical field of driving atomizers, in particular to a driving circuit for piezoelectric ceramic atomizers. Background technique [0002] Ultrasonic nebulizer uses electronic high-frequency oscillation, through the high-frequency resonance of the ceramic atomizer, breaks up the molecular structure of liquid water to produce natural and elegant water mist, without heating or adding any chemical reagents. Compared with the heating atomization method, the energy saving is 90%. In addition, a large amount of negative ions will be released during the atomization process, which will produce electrostatic reactions with the smoke and dust floating in the air to make them precipitate. At the same time, it can also effectively remove formaldehyde, carbon monoxide, bacteria and other harmful substances to purify the air. Reduce the incidence of disease. [0003] The drive circuits of existing piezoelectric ceramic atomizers mainl...

AI Technical Summary

Problems solved by technology

[0006] The electrical signal waveforms of the above two driving circuits driving the atomizer are asymmetrical, and the difference between the forward and reverse electrical signals is too large, resulting in asymmetrical oscillation of the atomizer, which cannot work at the optimal operating point, resulting in an atomization effect Poor, high energy consumption, extremely low work efficiency

At the same time, it is greatly affected by parasitic parameters and has low controllability

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