An embedded magnetic component transformer device includes primary, secondary, and auxiliary windings that are defined by conductive vias connected by conductive traces. The conductive traces and vias of the auxiliary winding are arranged between the conductive traces and vias of respective first and second portions of the primary winding, so that the auxiliary winding is provided substantially in the center of the width of the PCB. Power connections are provided at respective opposing edges of the device, and surface mounted transistors are provided close to the primary winding portions between the auxiliary winding and the edge of the device. The device provides an efficient utilization of the surface conductive traces such that large areas of the surface remain for other functions, such as ground plates. The thermal properties of the device are balanced by distributing the transistors and the power connections.

A common mode choke apparatus includes a first bus bar forming a first plurality of loops about a first segment of a ferrite core, the first bus bar having a plurality of first upper surfaces, and a second bus bar forming a second plurality of loops about a second segment of the ferrite core, the second bus bar having a plurality of second upper surfaces.

A high voltage inductive adder is disclosed. An inductive adder may include a plurality of switch boards that each include a plurality of switch boards that include a plurality of solid state switches. These switch boards may be stacked one upon another. The inductive adder may include a transformer comprising a plurality of toroid-shaped transformer cores disposed on a corresponding one of the plurality of switch boards; and a transformer rod that extends through the plurality of switch boards and the plurality of transformer cores. The inductive adder may include an output electrically coupled with the transformer rod. And each of the plurality of circuit boards, for example, may include a tailbiter circuit electrically coupled in parallel with the output.

A pin has a z shape and includes a first notch in a first tip of the pin and a first slot in a first bend in the pin. Alternatively, a pin includes first, second, and third plates; a first bend connecting the first and the second plates; a second bend connecting the second and the third plates. The first plate includes a first notch, and the second bend includes a first slot. A module includes a substrate, a pin mounted to the substrate, and a wire wound around the pin.

A transformer assembly includes a transformer core, a cup that receives the transformer core, a lid that engages with the cup and covers the transformer core, and a winding wound around the cup and the lid. The cup and/or the lid include at least one hole through which the transformer core is exposed to an exterior of the cup and the lid when the lid is engaged with the cup.

An embedded inductance structure includes an insulating layer, an inductance located in the insulating layer, a multi-layer conducting circuit located in the insulating layer and on the upper surface and lower surface of the insulating layer, and a multi-layer conductive copper column layer located in the insulating layer. The inductance and the multi-layer conducting circuit are conductively connected via the multi-layer conductive copper column layer, and the inductance includes a magnet and an inductance coil in direct contact with the magnet, and the inductance coil is composed of a multi-layer conductive coil and a conductive copper column located between adjacent conductive coils. The multi-layer conductive coils are respectively in a ring shape with a notch and are disconnected at the notch, and the positions of the conductive copper columns located on the upper side and lower of each conductive coil are different in the longitudinal direction.

A module includes a wiring board, an insulating layer that is laminated on the bottom surface of the wiring board, a ring-shaped coil core that is embedded in the insulating layer, a coil electrode that is wound around the coil core, electronic components that are disposed in an inner region surrounded by the coil core in the insulating layer, and an electronic component that is mounted on or in the top surface of the wiring board. With this configuration, the areas of main surfaces of the wiring board and main surfaces of the insulating layer are not large, whereas if the electronic components were mounted on or in the top surface of the wiring board, the areas of the main surfaces of the wiring board and the main surfaces of the insulating layer would be large, and a reduction in the size of the module can be facilitated.

Unique systems, methods, techniques and apparatuses for a ZVT ZCT resonant converter with a variable resonant tank are disclosed. One exemplary embodiment is a system comprising a bidirectional resonant converter comprising an input/output terminal, a switching device coupled with the input/output terminal, a resonant circuit coupled with the switching device and including a variable inductor, an output/input terminal coupled with the resonant circuit, and a DC biasing circuit operatively coupled with the variable inductor. The variable inductor comprises a toroidal core, a first winding wound around the toroidal core and coupled with the switching device and the output/input terminal, a second core structured to overlap a portion of the toroidal core, and a second winding wound around the second core and coupled with the DC biasing circuit. The DC biasing circuit is controllable to vary the inductance of the variable inductor by saturating a portion of the toroidal core.

A transformer (100) includes a magnetic core (1), a primary coil (2), and a secondary coil (3) wound around the magnetic core (1), the primary coil including a first enameled wire (21) and a second enameled wire (22), one end of the first enameled wire and one end of the second enameled wire forming a first center tap (23) twisted into a bundle, the secondary coil including a third enameled wire (31) and a fourth enameled wire (32), one end of the third enameled wire and one end of the fourth enameled wire forming a second center tap (33) twisted into another bundle, the transformer (100) having only four enameled wires and the first center tap (23) is cross with the second center tap (33).

A toroidal magnetic element. A plurality of coils is arranged in a toroidal configuration. Each coil may be a hollow cylinder, formed by winding a rectangular wire into a roll. The coils alternate with spacers, each of which may be a wedge. The coils may alternate in winding orientation, and the inner end of each coil may be connected, through a connection pin, to the inner end of an adjacent coil. Small gaps are formed between the coils and the wedges, e.g. as a result of each wedge having, on its two faces, a plurality of raised ribs, against which the coils abut. Cooling fluid flows through the gaps to cool the coils.