Abstract: The converter comprises an output transformer (T1) through which pass trapezoidal current waves. The primary winding (A0) is supplied under the control of two control circuits (P1, P2), each comprising a transistor (Q1, Q2) and a diode (D1, D2) which are connected in anti-parallel. The two transistors are controlled by two oppositely-poled secondary windings (W1, W2) of a second transformer (T2), the primary winding (W3) of which is controlled by the first transformer (T1). Associated with each control circuit (P1, P2) is a capacitor (C1, C2) such as to accumulate energy during one phase of operation and to discharge it during a subsequent phase. Another winding (Wc) of the second transformer (T2) permits the latter to be biased, stabilizing the output voltages by means of closed-loop feedback control of one thereof.

Abstract: The stabilization of all of the output voltages of a switching power supply is obtained by varying the time of flow of the current in a semiconductor interrupter circuit with a constant interruption repetition cycle, by controlling the interrupter through a magnetic amplifier. The power supply includes a voltage converting circuit comprising an automatic balancing circuit, magnetic amplifiers and a saturable reactor for limiting the dissipation of power in conditions of overload through an increase of the frequency of operation of the discharge stabilizing circuit.