The invention provides a sheet metal joint and a method for forming a sheet metal joint. The sheet metal joint includes first and second metal sheets disposed in parallel relation to one another. Each of the first and second metal sheets has a plurality of perforations with a tang extending from each perforation. The tangs of the second sheet and the tangs of the second metal sheet are curled together in opposite rotational directions. The tangs of the first metal sheet space the first and second metal sheets from one another and the tangs of the second metal sheet substantially fixedly engage the first and second metal sheets with respect to one another.

Sheet metal joint

The present invention relates to an integrated magnetics component comprising a magnetically permeable core comprising a base member extending in a horizontal plane and first, second, third and fourth legs protruding substantially perpendicularly from the base member. First, second, third and fourth output inductor windings are wound around the first, second, third and fourth legs, respectively. A first input conductor of the integrated magnetics component has a first conductor axis and extends in-between the first, second, third and fourth legs to induce a first magnetic flux through a first flux path of the magnetically permeable core. A second input conductor of the integrated magnetics component has a second coil axis extending substantially perpendicularly to the first conductor axis to induce a second magnetic flux through a second flux path of the magnetically permeable core extending substantially orthogonally to the first flux path. Another aspect of the invention relates to a multiple-input isolated power converter comprising the integrated magnetics component.

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An integrated magnetics component

A method for generating a fast rise-time X-ray pulse includes the steps of providing an n-phase x-ray generator, the x-ray generator including an n-phase transformer having at least one primary winding and at least one secondary winding per phase, and providing n sections of rectifiers, each rectifier having at least a fast pulse rise-time mode and a n-phase ripple flat-top mode. According to the method, at least a first capacitor is charged in each of the n sections of rectifiers at a ripple of less than n-phases to create a fast leading edge of the fast rise-time pulse, and at least a second capacitor is charged in each of the n sections or rectifiers at an n-phase ripple to create a substantially flat-top of the fast rise-time pulse.

Rise/fall time control for X-ray pulses

A three dimensional (3D) poly-phase transformer includes a plurality of transformer ribs mechanically and magnetically coupled such that each transformer rib forms a leg of a polygon. A plurality of the polygons forms a 3D polyhedron structure. At least two base planes of the 3D poly-phase transformer including a polygon have a plurality of base ribs. At least four side ribs of the 3D poly-phase transformer are disposed between the base planes. The 3D poly-phase transformer includes a plurality of primary and secondary transformer windings. Another 3D poly-phase transformer includes at least two base planes having a closed curve. Each closed curve includes a plurality of curved base ribs, and at least four side ribs of the 3D poly-phase transformer disposed between the base planes. Methods of manufacturing three dimensional (3D) poly-phase transformers are also described.

3d poly-phase transformer

PURPOSE:Forcible rotation of disk which forms a gap for passing the yarn through facilitates removal of sericin or foreign matters sticking to the gap and increases the accuracy of yarn fineness sensing. CONSTITUTION:A couple of disks 7, 8 are set to the shaft 1 at a certain space and the yarn 18 is passed through the gap 12 to sense the yarn fineness where a device is furnished to rotate the disks 7, 8 forcibly and intermittently. For example, the shaft is provided with a washer 10 with a recessed edge and a spinning rod 26 which connects to the washer 10 intermittently. The intermittent connection and rotation of the spinning rod 26 is effected using pressurized air.

Rotation of gap in yarn fineness sensor

PURPOSE:To control the operating point of a core by a method wherein a magnetic core having a nonlinear region is provided with No.1 and No.2 coil and further No.3 coil which is arranged perpendicular to these coils, and when power is supplied to No.1 coil, and the output voltage of No.2 coil is supplied to No.3 coil. CONSTITUTION:A transformer 10 consists of a pair of magntic cores 11, 12 made of ferrite. These cores 11, 12 consist of a square plate-shaped core base 10E and magnetic legs 10A-10D, which extend from the four corners of the base at right angles to it and have the same cross section. Magnetic legs 10A-10D are placed opposite one another so that they come in contact with one another with their ends. As a whole, they from a cube or a rectangular parallepiped. Next, extending over to the respective magnetic legs, excitation coil N1 is wound on 10B and 10C, parametric oscillation coil N2 on 10A and 10D, and control coil NC on 10A and 10B. By this, the output voltage of coil N2 produced when power is supplied to coil N1 is applied to coil NC, and thereby the maximum magnetic flux density of transformer 10 is controlled and the output voltage is stabilized.

Yasumura Masayuki

Papers

Power supply device