High efficiency push-pull saturation converter

Claim 2

A push-pull saturation converter, comprising: a transformer having a primary winding, a base winding, and a secondary winding; two switching transistors connected to alternately charge the primary circuit of the transformer with a DC voltage; bases of said switching transistors being linked via the common base winding of the primary circuit; a choke with a diode connected in parallel being disposed in a common emitter circuit of the switching transistors; and a center leg of a core of the transformer bearing the winding of the transformer having at least one notch-like shaping restricting a cross section of a center leg of the core.

Claim 3

A push-pull saturation converter according to claim 1, wherein an acceleration element comprising a series connection of a resistor with a following capacitor has one end connected to a base circuit associated with the switching transistors through the base winding and the other end is connected to a reference terminal.

Claim 4

A converter according to claim 2 wherein the base circuit comprises a voltage divider, an output of the voltage divider having said resistor and capacitor series connected in parallel thereacross, said output connecting to the base winding.

Claim 5

A push-pull saturation converter, comprising: a switching transformer having two primary windings and a secondary winding; a switching transistor connected at each end of a first of the primary windings by its collector; a common emitter connection of the two switching transistors connecting through a choke and diode to one input terminal of a DC input for the converter; a base of each switching transistor connecting to respective ends of the secondary primary winding; a second input terminal of said DC input connecting to the first primary winding and also through a voltage divider to the second primary winding; the output of the voltage divider having a series connected resistor and capacitor connected thereacross; and a center leg of a core of the switching transformer having a flux restriction therein.

Claim 6

A push-pull saturation converter, comprising: a switching transformer having two primary windings and a secondary winding; a switching transistor connected at each end of a first of the primary windings by its collector; a common emitter connection of the two switching transistors connecting through a choke and diode to one input terminal of a DC input for the converter; a base of each switching transistor connecting to respective ends of the secondary primary winding; a second input terminal of said DC input connecting to the first primary winding and also through a voltage divider to the second primary winding; the output of the voltage divider having a series connected resistor and capacitor connected thereacross; and a center leg of a core of the switching transformer having a flux restriction therein.