The book includes descriptions of inventions and projects of the outstanding Russian inventor N.N. Benardos. The main attention is paid to the invention of N.N. Benardos - electric arc welding, its distribution in Russia and abroad. Original developments and inventions in the field of electrical engineering, agriculture, military affairs, transport, etc. are given. Scientific analysis of the main works is given. Photos, diagrams and drawings of inventions and developments are given. Presented materials on the life and scientific activity of N.N. Benardos.