FIELD: microelectronics; control of electric devices incorporating filament, including electric lamps, or those incorporating electric motor, including fans. SUBSTANCE: to control power transmitted to resistive or inductive loads, base-collector junctions of first and second p-n-p transistors are connected into diode bridge in series with first and second diodes; transistor bases are connected to diode anodes, collectors are connected, respectively, to first and second power leads and emitters, to thyristor control inputs. EFFECT: enlarged functional capabilities, improved reliability of power control. 4 dwg
