E.V. Mamontov - Dr. Sc. (Phys.-Math.), Professor, Department «Industrial Electronics», Ryazan State Radio Engineering University E-mail: mamontov.evgeny@mail.ru V.V. Zhuravlev - Ph. D. (Eng.), Associate Professor, Department «Industrial Electronics», Ryazan State Radio Engineering University E-mail: vladimir.rgrtu@mail.ru V.N. Dvoinin - Leading Engineer, Department «Industrial Electronics», Ryazan State Radio Engineering University A.A. Salikov - Post-graduate Student, Department «Industrial Electronics», Ryazan State Radio Engineering University E-mail: joker92-elektro@mail.ru