Switching regulator

Claim 1

A switching regulator comprising: (a) a DC voltage source means; (b) first switching means supplied with the output of said DC voltage source means and producing a first pulse signal; (c) a pulse width modulator means for applying a pulse width modulation signal to said first switching means; (d) a low pass filter means supplied with said first pulse signal and for producing a first DC voltage across first and second connection points; (e) an inverter at least including a driving transformer having a primary winding, a pair of secondary windings, and a magnetic core, an output transformer having a primary winding, a secondary winding and a further separate winding, first and second transistors each having base, emitter and collector, the collector-emitter circuits of which are series connected together between the first and second connection points, a junction between the first and second transistors connecting to the primary winding of the output transformer, and the base-emitter circuits of which are connected across the corresponding secondary windings of said driving transformer, respectively, and the secondary winding of said output transformer producing a second pulse signal; (f) first circuit means for connecting the further separate winding of said output transformer to the primary winding of said driving transformer so as to supply a feedback signal thereto; (g) second circuit means for connecting the further separate winding of said output transformer to said pulse width modulator means so as to supply a synchronizing control signal thereto; and (h) a rectifier circuit supplied with said second pulse signal and producing a second DC voltage.