History of Science and Engineering Annotation << Back History of the laboratory of excitation of turbo- and hydrogenerators V.A. Sharlot The paper deals history establishment and development of one scientific direction of semiconductor transducers for excitation turbo and hydro generators in All-Russian Electrotechnical Institute. There are information about scientists who has worked here, scientific and technical solutions in field of semiconductor transducers in initial stage of development, their features and problems, main introductions of semiconductor transducers for excitation turbo and hydro generators and list of manufacturers. Key words: laboratory; excitation; semiconductor; diode; thyristor; fuse; exciter; turbo generator; hydro generator. Pp. 45-50