The current economic situation of our country requires a reduction in the cost of production, one of the directions of this process is to increase welding productivity through the use of high-quality welding machines. Currently, the welding speed cannot be increased due to the use of existing equipment in production, which can be used to protect welding devices from current sources, plasma currents, etc. The structure is related to the features. Basically, the welded joints of the parts of the nodes can be made by joining (contact), electron beam, laser and argon arc welding, plasmatron welding. All these methods have begun to be used in industry, of which resistance welding is the most widely used in welding thin parts. The method that provides the required quality of welded points is characterized by reliability and ease of use of such equipment and ease of use in industry, everyday life, economic activity. The paper describes the principles of resistance welding, the current state and prospects of welding methods for joining metals and alloys using electrical and thermal energy. It should be noted that in mechanical engineering and instrumentation, an urgent problem is the connection of parts of small thickness with a smaller size or dimension. Therefore, we recommend the type of welding device that is manufactured by assembling elements of existing electronics