Abstract: A zero-current switching DC to DC full-wave mode converter, having a controllable DC to AC converter including electronic switches for selectively coupling a source of voltage across a primary winding of a power transformer circuit when the current flow through the switches is substantially negligible, AC to DC converter connected to secondary windings of the power transformer circuit, two charging and energy storing circuits each including a storage capacitor connected in series with one of the secondary windings and further including an inductor unit connected in circuit between the input of the DC to AC converter and the storage capacitor and at least one discharging circuit connected across the storage capacitors and being connectable via a first and a second terminal to a load, the discharging circuit including at least one discharging inductor connected between one side of the storage capacitor and the first terminal, wherein the charging period of the storage capacitor is smaller than the discharging p