Engineering Physics Annotation << Back Power Supply for Atmospheric Pressure Low-Temperature Plasma Generator Bogachev N.N., Bakshaev A.S., Kolik L.V., Konykova A.S., Stepin V.P., Konchekov E.M. This paper presents a compact power supply for a piezotransformer integrated into an atmospheric pressure low-temperature plasma generator. The article discusses the properties of piezotransformers and the peculiarities of their operation and application for low-temperature plasma generation. Based on a comparative analysis of power supply topologies and feedback circuits for controlling the piezotransformer, an E-class circuit topology was selected. Numerical simulations of the main blocks of the power supply were conducted alongside with the equivalent circuit of the piezotransformer. Schematic diagrams were designed, and printed circuit boards for the device were fabricated. The device's functionality was verified at an output power of 12 W and a voltage of 5.5 kV, resulting in discharges using a piezotransformer powered by the developed power supply. Keywords: power supply, low-temperature plasma, piezoelectric effect, piezotransformer, resonance, frequency, driver, circuit design. DOI: 10.25791/infi zik.6.2025.1484 Pp. 19-30.