An integrated transformer and an electronic device are provided. An integrated transformer includes at least one substrate defining a plurality of annular accommodating grooves. Each annular accommodating groove divides a corresponding substrate into a central part surrounded by the each annular accommodating groove and a peripheral part arranged around the each annular accommodating groove. The central parts and the peripheral parts, magnetic cores received in the annular accommodating grooves and conductive connectors assembled on the at least one substrate, and transmission wire layers on both sides of the at least one substrate cooperatively constitute a plurality of transformers and filters arranged according to preset arrangement manners. At least one of the transformers and at least one of the filters are electrically connected to form a group of electromagnetic assemblies, and any two groups of electromagnetic assemblies are not electrically connected with each other on the at least one substrate.

An electronic circuitry module and a method of potting an electronic circuit are provided. The electronic circuit module includes at least one heat generating electronic component and is potted in a potting material. Additionally, a cooling circuit is potted in the potting material. The cooling circuit includes an inlet and an outlet for flow of cooling liquid therebetween.

A surge voltage reducing member includes: a magnetic body including a long-side portion and short-side portions continuously formed at both ends of the long-side portion in a longitudinal direction; and a plurality of conductive paths wound around the long-side portion. Each of the conductive paths is wound in parallel along the longitudinal direction of the long-side portion.

A surge voltage reducing member includes: a magnetic body including a long-side portion and short-side portions continuously formed at both ends of the long-side portion in a longitudinal direction; and a plurality of conductive paths wound around the long-side portion. Each of the conductive paths is wound in parallel along the longitudinal direction of the long-side portion.

A ceramic dielectric including: a bulk dielectric including barium (Ba) and titanium (Ti); a ceramic nanosheet; and a composite dielectric of the bulk dielectric and the ceramic nanosheet.

A ceramic dielectric including: a bulk dielectric including barium (Ba) and titanium (Ti); a ceramic nanosheet; and a composite dielectric of the bulk dielectric and the ceramic nanosheet.

A transformer assembly and method(s) of use thereof is described. Embodiments of the transformer assembly can include, but are not limited to, a transformer, a plurality of secondary bushings located on a secondary side of the transformer, a plurality of secondary probe blocks, and a plurality of secondary parking ports. The plurality of secondary probe blocks are each configured to be inserted into either one of the plurality of secondary bushings or one of the plurality of secondary parking ports. When inserted into the secondary bushing, the secondary probe block and associated service wires can be energized at a secondary voltage. When inserted into the secondary parking port, the secondary probe block and associated service wires will be de-energized.

A coil having a coil body and a plurality of concentric cross-section windings of wire disposed around the coil body, the wire having a spacing between adjacent turns of about 0.25 to 1.0 of the radius of the wire. Also, a coil for a plasma processing device, the coil having a coil body and a plurality of concentric cylindrical cross-section windings of wire disposed around the coil body, the wire having a spacing between adjacent turns of about 0.25 to 1.0 of the radius of the wire and a diameter to length ratio of between about 2:1 and about 3:1.

A tunable inductor arrangement includes a first winding part connected at one end to a first input of the inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the inductor arrangement, and a fourth winding part connected at one end to the other end of the third winding part. For tuning, the inductor arrangement includes a switch arrangement switchable between a first setting series-connecting the first and third winding parts between the inputs, and a second setting series-connecting the first, second, fourth and third winding parts between the inputs. The first and third winding parts are arranged on a chip or substrate with essentially common magnetic fields, and the second and fourth winding parts are arranged to cancel electro-magnetic coupling with the first and third winding parts.

The present invention provides a method of diagnosing an oil-immersed electrical apparatus by an assessment of a state of deterioration of the oil-immersed electrical apparatus including an insulating oil. The insulating oil has been subjected to changing from mineral oil to vegetable oil. The method comprises: performing a first analysis before the changing, by analyzing the insulating oil; performing a second analysis after the changing, by analyzing the insulating oil; performing a first assessment by assessing the state of deterioration of the oil-immersed electrical apparatus before the changing, based on the first analysis results; performing a second assessment by assessing the state of deterioration of the oil-immersed electrical apparatus after the changing, based on the second analysis results; and performing a third assessment by assessing the state of deterioration of the oil-immersed electrical apparatus based on assessment results from the first assessment and assessment results from the second assessment.