Mains unit With the bridge circuit with double winding and a wide control range

摘要

FIELD: electricity.;SUBSTANCE: invention relates to unit of supply from the circuit, consisting of at least one transformer (TR1), at least one bridge circuit, with the help of which primary winding of transformer (TR1) is connected to input voltage of direct current (UE) and secondary winding, by means of which via bridge rectifier circuit and also output throttling coil (1, 2) and output capacitor (C2), output circuit is loaded with output DC voltage (UA), and unloading circuit consisting of diode (D5), capacitor (C4) and resistance (R1) to reduce maximum voltages on secondary side, at the same time another secondary winding is provided, as well as another bridge rectifier circuit with double winding and another unloading circuit, by means of which with the help of output throttling coil (1, 2) and output capacitor (C2), output circuit is loaded with part of output DC voltage (UA).;EFFECT: less losses occur in resistances, and supply unit efficiency increases.;5 cl, 3 dwg