Industrial Automatic Control Systems and Controllers Annotation << Back Method of Protecting Power Supply Circuits in Explosive Atmospheres Maykov O.A., G.Ya. Shaidurov, Kozyrev I.A., Devyaterikov I.E. The article presents methods for compensating electrical circuits both inside the source and connected to it loads of the intrinsically safe barrier of the power source, designed for operation in environments hazardous in terms of gas and dust. The relevance of the topic is determined by the need for power supply to high-risk areas with a maximum reduction in the risk of ignition of the atmosphere with fl ammable gases or dust particles. As an alternative to individual modules providing intrinsic safety, the authors propose to modify the quasi-resonant converter of the output voltage for operation in the mode of suppression of output voltage pulsations and spark energy. Keywords: intrinsically safe barrier, high-risk zone, power supply, quasi-resonant converter. DOI: 10.25791/asu.12.2024.1546 Pp. 03-10.