An MR loop coil design incorporates a balun into the loop coil. With this approach, some components of the coil may be simultaneously part of the imaging coil and the balun. Further, with this approach the number of components used to build an MR coil may be reduced, which may result in a reduction in cost, weight and size. This MR loop coil design may also be used to build phased array coils from the smaller loop size. Such an approach may use small feeder circuit boards oriented generally perpendicular to the coil elements to reduce interactions between the feeder boards and the coils. Such feeder boards may also be made smaller than conventional feeder circuits because the integrated balun coil design may reduce the number of components needed to create balanced coils in the array.

The present invention relates to an isolation transformer suitable for use in a modulator for generating high voltage pulses for supply across a high voltage load having a thermionic cathode such as a magnetron, the isolation transformer comprising a primary winding formed from a triaxial cable where the triaxial cable comprises a core conductor surrounded by a dielectric insulator, in turn surrounded by a screening conductor, with an outer insulating jacket.

Embodiments of present disclosure relate to an input/output (I/O) module and a control system. The I/O module includes at least two coreless communication transformers arranged in parallel, each coreless communication transformer which includes a printed circuit board. The I/O module also includes a primary winding and a secondary winding disposed on opposite sides of the PCB, and at least two closed wires disposed coaxially on the PCB and arranged around the primary winding or inside the primary winding. The crosstalk of the I/O module is reduced and the communication robustness of the I/O module is improved.

A filter circuit includes: a first coil electromagnetically coupled to a current-carrying coil inserted into a current flow path; and a parallel circuit of a second coil and a capacitor, the parallel circuit being connecting across the first coil. The element constants of the second coil and the capacitor are set such that parallel resonance occurs at a frequency at which an impedance between the terminals of the current-carrying coil is equivalent to an impedance of the current-carrying coil alone.

A coil device of solenoid type includes a coil portion having a bobbin and a conductive wire wound around the bobbin, a housing for accommodating the coil portion, and at least one fastener for fastening the bobbin and the housing. The conductive wire includes a plurality of extending portions extending along a wound wire direction on the bobbin and having gaps in a winding axis direction. The fastener is provided between the plurality of extending portions and is obliquely disposed with respect to a plane orthogonal to the winding axis direction.

An Isolating Transmission Line Transformer (ITLT) for use in a data communications system is provided, the transformer comprising: a substantially planar substrate formed of electrically insulative material having opposed first and second surfaces; a first port formed of two separate terminals provided at one part of the substrate; a second port formed of two separate terminals provided at a second part of the substrate; a first conductor connected in series to the first port and arranged as a single loop; a second conductor which is electrically isolated from the first conductor and connected in series to the second port, the second conductor being arranged as a single loop in a substantially opposite orientation to the first conductor; wherein the first and second ports and at least part of the first and second conductors are provided on the substrate surface(s); and a core arranged between the first and second ports to cover the majority of the first and second conductors.

A transformer and method of forming is disclosed. A set of windings including a coaxial cable portion and a printed circuit board (PCB) trace portion are wound around a magnetic core. The coaxial cable portion defines a portion of the primary windings and a portion of the secondary windings. The PCB trace portion includes a set of first PCB traces and a set of second PCB traces to define another portion of the primary windings, and a set of third PCB traces and fourth PCB traces define another portion of the secondary windings. The set of third PCB traces and fourth PCB traces are electrically coupled by a set of conductive vias. The third PCB traces, fourth PCB traces and the set of conductive vias circumferentially surround at least a portion of the first PCB trace and a second PCB trace.

Described herein are apparatuses and methods for applying high voltage, sub-microsecond (e.g., nanosecond range) pulsed output to a biological material, e.g., tissues, cells, etc., using a high voltage (e.g., MOSFET) gate driver circuit having a high voltage isolation and a low inductance. In particular, described herein are multi-core pulse transformers comprising independent transformer cores arranged in parallel on opposite sides of a substrate. The transformer cores may have coaxial primary and secondary windings. Also describe are pulse generators including multi-core pulse transformers arranged in parallel (e.g., on opposite sides of a PCB) to reduce MOSFET driver gate inductance.