SYNC RECTIFIER Russian patent published in 1994 - IPC

FIELD: secondary electric power supply. SUBSTANCE: device has single-phase power transformer 5, two diodes 11, 12, two rectifying transistors 6, 7, two restricting resistors 8, 13, protective transistor 9 and output voltage divider 10. Functions of emitter-collector of transistors 6, 7 are connected between end outputs of secondary windings of the transformer. Resistor 8 has one output connected to bases of transistors 6, 7, the other output of the resistor is connected with output wire 4 through collector-base junction of transistors 9. Base of transistor 9 is connected with output of voltage divider 10. Diodes 11, 12 are connected with output wire 3 and with collectors of transistors 6, 7 in the same phase of conductivities of transistors 6,7 through resistor 13. Free electrodes of the diodes are connected with corresponding end outputs of secondary winding of the transformer. Medium output of the winding is connected to output wire 4. EFFECT: protection against overloads in short-circuit modes and transient processes. 1 dwg