Нестійкість режиму в колі з ємністю і зварювальною електричною і плазмовою дугою, що живиться від джерела постійного струму

The article deals with automatic control at the arc of plasma welding and associated processes and technologies. The article engages mathematical techniques common in the description of automatic control systems. The article presents the results of the analytical study of dynamic processes occurring in the circuit of an electric arc with a capacity. The results of mathematical modeling that allow predicting the instability of the system with an integrated linear or non-linear load are rendered. Accounting for the reference to the object of automatic regulation (arc or plasma), the suggested materials can be of particular interest for a wide range of specialists in the field of welding production, as well as those engaged in the research of automatic control systems in converters.