http://www.hst-journal.com Історія науки і техніки 2020, том 10, випуск 2 History of science and technology, 2020, vol. 10, issue 2 Copyright © 2020 E. Tverytnykova, M. Gutnyk, H. Salata. This is an open access article distributed under the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. DOI:10.32703/2415-7422-2020-10-2-383-399 UDC 621.3.09:621.3.477 Elena Tverytnykova National Technical University “Kharkiv Polytechnic Institute”, 2, Kyrpychova Street, Kharkiv, Ukraine, 61002 e-mail: tveekhpi@ukr.net https://orcid.org/0000-0001-6288-7362 Maryna Gutnyk National Technical University “Kharkiv Polytechnic Institute”, 2, Kyrpychova Street, Kharkiv, Ukraine, 61002 e-mail: marinazoza@gmail.com https://orcid.org/0000-0002-2723-2755 Halyna Salata Kyiv National University of Culture and Arts 36, Konovalca Street, Kyiv, Ukraine, 01601 e-mail: salaty@bigmir.net http://orcid.org/0000-0002-2673-8463 Professors of the Kharkiv Technological Institute: unknown pages of biography Abstract. The purpose of the study is to conduct a comprehensive historical and scientific analysis of the life and scientific and organizational activities of professors of the Kharkiv Technological Institute Oleksii Khinkulov and Pavlo Dedusenko, using the study of scientific literature and involved archival materials. On the basis of the involvement of unknown and little-known archival documents, a historical reconstruction of the creative activity of scientists was conducted; in particular, the little-known period of their life in 1940–1946 was studied in detail. A comprehensive analysis of the scientific activities of Oleksii Khinkulov was carried out, his contribution to the formation of the electrical industry was determined. His role in the development of scientific research in the field of radio engineering in Ukraine was emphasized. He headed one of the largest radio engineering club in Ukraine. The social activities of Oleksii Khinkulov were investigated, it was found that for a long time he worked as deputy chairman, and then as chairman of the All-Ukrainian Association of Engineers, which united the teams of research departments of technical institutions of Ukraine. The scientific and organizational activities of Professor Oleksii Khinkulov certainly contributed to the development of electrical engineering science and education both in Kharkov and in Ukraine. He was one of the organizers and