A transformer includes a magnetic core, a primary side winding and a plurality of secondary side windings. The magnetic core includes a first outer column, a second outer column, an upper cover and a lower cover. The first outer column and the second outer column are disposed between the upper cover and the lower cover. The primary side winding is disposed on the first outer column and the second outer column, and the plurality of secondary side windings are disposed on the first outer column and the second outer column. Each of the secondary windings has one end passing through a region between the first outer column and the second outer column.

An isolated communications apparatus applied to a transformer. The transformer includes N first rectifier units and a second rectifier unit, and the isolated communications apparatus includes N first control units, a second control unit, and a signal convergence unit. The first control units are connected to the first rectifier units in a one-to-one correspondence. Each first control unit is connected to the signal convergence unit, and the signal convergence unit and the second control unit are connected through an optical fiber. The signal convergence unit is configured to: receive first data packets from the N first control units, send the first data packets to the second control unit, receive at least one second data packet from the second control unit, determine a first control unit corresponding to each second data packet, and send each second data packet to a corresponding first control unit.

A power generating transformer system (PGTS) where the core of the transformer has one of the generalized configurations is presented. Also, a power factor correction method in a power generating transformer system (PGTS) and a PGTS functioning also as power supply are presented. A PGTS generates an AC voltage with the frequency which lets the desired relative phase which is the difference between the phase of the flux at the primary coil and that of the flux at the secondary coil be in a specified range. And by controlling the reactive power at the primary coil of the transformer of the transformer circuit or at the location where the AC voltage is generated, the power factor correction is done using one or more components in the transformer circuit (TC). Finally, block diagrams of PGTS are presented.

Embodiments for a multifilar inductor with at least three windings that are switchable, having a power assigned winding denoted as P1, a suppression assigned winding denoted as B, a containment assigned winding denoted as T, a switching apparatus to switch assignments between the P1, B and T windings; and a capacitor bank, wherein B suppresses the back EMF generated by a pulse power, T contains field emitted EMF generated by the pulse power, and wherein the input pulse power input is converted to a constant current output into the capacitor bank such that its time duration is extended by the combination of the inductor windings plus the capacitor bank to thereby minimize the peak inductance below the inductor's saturation point.

A direct-current voltage conversion circuit having on/off control with a dead-time period performed alternately on a first switch and a second switch included in a direct-current voltage conversion circuit. When alternating current flows in a series circuit part including two transformers magnetically independent, current flows in an output circuit including a secondary side of one transformer, and energy is accumulated in the other transformer. The permeabilities of the magnetic cores in the first and second transformers is between 15 and 120.

Variation in inductance is reduced with a secondary-side coil substrate on which a plurality of wiring layers are superimposedly disposed, and a plurality of coils provided in the secondary-side coil substrate. On the wiring layer, coil patterns corresponding to parts of one circumferences of the coils are formed. On the wiring layer, coil patterns corresponding to remaining parts of the one circumferences of the coils are formed. The coil patterns, and the coil patterns that are provided on the different wiring layers are connected to each other via conduction points in a superimposition direction of the wiring layers, and the one circumferences of the respective coils are formed.

An electronic component including: a coil portion that includes a base that includes a conductive metal, a first terminal portion connected to a circuit board on which a rectifier circuit is mounted, and a second terminal portion that outputs a direct current rectified by the rectifier circuit.

A flat, electrically and thermally conductive flat surface group is formed in the common connection region 32 of the secondary coil 13. The flat conductive surface group is directly and mechanically joined to the connecting surfaces of the first conductor plate 42, the second conductor plate 44, and the third conductor plate 46, respectively. The first conductor plate 42, the second conductor plate 44, and the third conductor plate 46 cover the entire common connection region 32. The annular first conductor plate 42 occupies the maximum area. The refrigerant can be circulated in the annular cavity provided inside the first conductor plate 42 to efficiently cool the whole.

Power module includes transformer unit including primary and secondary windings and magnetic core; first and second capacitor units coupled to first terminal of primary winding of transformer unit through first node; first and second external pins respectively coupled to first terminal of first capacitor unit and second terminal of second capacitor unit; first and second switch units coupled to second terminal of primary winding of transformer unit thorough second node; third and fourth external pins respectively coupled to first terminal of first switch unit and second terminal of second switch unit; secondary-side circuit coupled to secondary winding; and fifth and sixth external pins electrically coupled to first and second output terminals of secondary-side circuit, respectively. First external pin is coupled to one of third and fourth external pins selectively.

A direct-current voltage conversion circuit having on/off control with a dead-time period performed alternately on a first switch and a second switch included in a direct-current voltage conversion circuit. When alternating current flows in a series circuit part including two transformers magnetically independent, current flows in an output circuit including a secondary side of one transformer, and energy is accumulated in the other transformer. The permeabilities of the magnetic cores in the first and second transformers is between 15 and 120.