SECONDARY POWER SUPPLY Russian patent published in 2016 - IPC H02M7/219 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and electronics, particularly to secondary converters of AC into DC voltage. Secondary power supply comprises a current transformer with secondary winding, primary winding of which is connected to power take-off circuit, transistors with connected resistors in gate circuit, and sources of transistors are joined and are connected to lead of load and first lead of smoothing capacitor. Second lead of load is connected to second lead of smoothing capacitor, also secondary power supply is equipped with two diodes, cathodes of which are joined and connected to second lead of load and smoothing capacitor. Control system is connected in parallel to load and smoothing capacitor. One of outputs of control system is connected to first output of secondary winding of current transformer and resistor connected in gate circuit of transistor, drain of which is connected to anode one diode and second output of secondary winding of current transformer, which is connected to other output of control system and to a resistor connected in gate circuit of other transistor, drain of which is connected to first output secondary winding of current transformer and to anode of other diode.

EFFECT: simplified design and higher efficiency with increased reliability of operation of device in a wide range of current in power takeoff circuit.

1 cl, 1 dwg