FIELD: electrical engineering. SUBSTANCE: device provides possibility to control stepping-up voltage, which is produced by rectifier and inverters, in six bands. In each band, device controls amplitude regulation as function of mains voltage deviation. By-phase pulse-width regulation is designed as function of phase voltage deviation at primary winding of main transformer. Stabilizer uses mixed regulation and provides symmetry of power supply voltage of main transformer. EFFECT: improved power rate, increased efficiency, improved load voltage shape. 2 dwg
