摘要:
A method and apparatus for reducing or eliminating crosstalk between a plurality of electron beams is described. The plurality of electron beams may produce test areas on a large area substrate that are adjacent wherein secondary electrons from one test area may be detected in an adjacent test area. In one embodiment, the timing of a primary beam emission and detection of secondary electrons from that primary beam is controlled to eliminate or reduce the possibility of detection of secondary electrons from another primary beam.
摘要:
The invention is a process to facilitate contacting of one or several power electronics components (10) with strip conductors (14, 15) on a substrate (12, 18) with the aid of a contact device (1) with several flat contact elements (6, 8) that are connected to each other by means of bridges (4, 5), including the following steps: (a) the contact device (1) is set on the upper side of the component (10); (b) the underside of a contact element (6, 8) is electrically connected both with a contact surface (S, G) on the upper side of a component (10) and with a strip conductor (14, 15); (c) at least one of the bridges (4, 5) between the individual contact elements (6, 8) is severed by means of thermal gouging. The invention also includes an assembly (16, 16′) produced with the process as well as a contact device (1) with several flat contact elements (6, 7) to facilitate contacting of power electronics components (10).
摘要:
A crash apparatus, in particular a crash box in a motor vehicle, has a deformation body for absorbing energy in the event of a crash, which body is assembled from two half shells having beads running transversely to the main deformation direction. The two half shells each have outwardly projecting flanges with beads also running transversely to the main deformation direction. The two half shells exclusively press against one another via the contact surfaces lying between the beads of the flanges and are connected to one another in these areas.
摘要:
To make holes in ceramic green sheets that are needed to create feedthroughs, it is proposed to make the holes by using a gas that is under a higher pressure than atmospheric pressure and that is expelled in a pulsed manner from a pressure vessel and thereby acts on a principal surface of a ceramic green sheet, at at least one location at which a hole is to be made, in such a way that material is shot out of the ceramic green sheet at that location. This eliminates the disadvantages associated with the use of punches to punch holes.
摘要:
A method and apparatus localize weak points within an electrical circuit. The electrical circuit is covered with a liquid crystal and is heated to a temperature just below the clearing point of the liquid crystal. The liquid crystal converts into its unordered condition given a temperature increase and leakage channel within the integrated circuit are completely localized. By irradiating a three-dimensional region, at least one current is induced in the region by generating electron-hole pairs within the electrical circuit, this at least one current causing a temperature increase at at least one weak point of the electrical circuit.
摘要:
A device for the reinforcement of large-surface-area lateral sections of a rear bumper covering is effected by a supporting holder which is arranged pivotably on a load-bearing structure, is folded-in in a delivery position, is folded up in an assembly position and can be fastened with its free end to the vehicle body.
摘要:
A method and apparatus for reducing or eliminating crosstalk between a plurality of electron beams is described. The plurality of electron beams may produce test areas on a large area substrate that are adjacent wherein secondary electrons from one test area may be detected in an adjacent test area. In one embodiment, the timing of a primary beam emission and detection of secondary electrons from that primary beam is controlled to eliminate or reduce the possibility of detection of secondary electrons from another primary beam.
摘要:
A method for cleaning vehicle windows by means of a wiper with a wiper strip (12), whose wiper lip (16) rests against the vehicle window. The wiper strip (12) is set into oscillations lateral to its longitudinal direction (20) during the wiping operation and/or shortly before it is begun.
摘要:
An electronic power circuit includes several power modules (1) and is especially for controlling an electrical machine. Each power module (1) includes a plate-shaped integrated electronic circuit arrangement (2) having several electrical terminals. A perpendicular bent-over electrically conducting side leg (3) is arranged on each of two opposite-lying sides of the plate-shaped circuit arrangement (2). The side leg (3) forms an electrical contact and, in this way, the power module (1) has a U-shaped cross section. Each side leg (3) is provided with connecting elements via which two or several power modules (1) can be electrically and mechanically fixedly connected to each other while forming a mutual spacing between the plate-shaped circuit arrangement (2) via the side legs (3) for forming the electronic power circuit.