摘要:
The invention relates to a distribution cabinet (1) for communications and data technology, comprising a rack (2), at least one roof module (30), side walls (32), at least one rear wall (31) and at least one door (33) being fastened on the rack (2), the rack (2) having vertical struts (3) and lower and upper horizontal struts (8-11, 4-7), the roof module (30) being fastened on the upper horizontal struts (4-7), at least one side wall, a rear wall and/or a door being in the form of a double wall (31-33), an air flow being capable of flowing in the double wall (31-33), which air flow is flow-connected to an air flow in the roof module (30), wherein the upper horizontal strut (4-7) on which the double wall (31-33) is fastened has a cross section in terms of flow technology which allows for an at least partial horizontal air flow from the double wall (31-33) and an at least partial vertical air flow to at least one opening (30a) in the roof module (30), the opening (30a) in the roof module (30) being arranged so as to be offset inward with respect to the opening (34) of the double wall.
摘要:
The invention relates to a housing (1) for installation in the open air in order to accommodate electrical devices, in particular components for communication and/or data technology, having an inner housing (2) in which a hermetically sealed functional area is provided for accommodation of the electrical devices, and an outer housing (3), which is arranged around the inner housing (2) in such a way that a cavity (4) is formed between the inner housing (2) and the outer housing (3), with side walls (6) of the inner housing (2) also being the side walls (6) of the functional area, wherein the side walls (6) of the inner housing (2) are metal sheets (20), with at least one of the metal sheets (20) being shaped with structuring (13) such that the area in the region of the structuring (13) is greater than that of a smooth surface.
摘要:
A hydrostatic drive system (1) has a load-sensing pump (2) with an adjustable discharge volume and at least one consumer connected to the pump (2). The discharge volume of the pump (2) can be set by a discharge volume control device (6) that sets the delivery pressure of the pump available in a delivery line (4) of the pump (2) so that it is higher by a pilot control pressure difference than the load pressure of the consumer. The discharge volume control device (6) can be actuated by an electronic control device (7) functionally connected with a sensor device (9) for measuring the load pressure of the consumer and with a sensor device (8) for measuring the delivery pressure available in the delivery line (4). A circulation device (15) is associated with the delivery line (4) to control the connection of the delivery line (4) with a reservoir (3).
摘要:
A monolithic integrated circuit is formed having semiconductor components disposed in surface regions of a semiconductor body, said regions being electrically isolated from the remaining semiconductor body by a pn-junction plane. The regions into which the semiconductor components are formed are electrically isolated by heavily doping surface areas of a substrate with phosphorus, antimony and/or arsenic impurities which are of the opposite conductivity from the substrate. After said doping, an epitaxial layer having a conductivity opposite to that of the substrate is formed over the entire substrate surface with a doping concentration lower than that of the substrate so that during subsequent high temperature processing steps, the substrate impurity out-diffuses into the epitaxial layer and the phosphorus of the heavily doped surface areas diffuses downwardly into the substrate to form a step-like pn-junction surface alternately extending into the substrate and into the epitaxial layer. During subsequent processing operations, an impurity of the same conductivity type as used in the substrate is diffused downwardly from the surface of the epitaxial layer to meet the out-diffused substrate impurity to complete the isolation of surface regions of the semiconductor body into which the semiconductor components are formed.
摘要:
A device for cleaning gas mixtures that contain particles, in particular for cleaning soot-laden exhaust gases of internal combustion engines, is described in which the device is embodied as a filter that has a porous surface of a sintered-metal-containing filter-supporting material that is exposed to the gas mixture to be cleaned. The sintered-metal-containing filter-supporting material has a catalytically active material component.
摘要:
A process is described for manufacturing integrated insulated-gate field-effect transistors comprising contacts on both the source region and the drain region which are self-aligned with respect to the gate electrode. In this process the gate area and the areas of the aforementioned regions are defined by means of an oxidation masking layer, and on these regions by employing the oxidation masking layer, there are produced insulator layers which are relatively thick compared to the gate insulator layer.
摘要:
An object identification system comprises a transceiver (1) and a transponder (30) including memories (33,34) for storing an identification code identifying the transponder. Circuits (35, 36, 37, 38) generate an identification signal representative of the identification code such that the identification signal is modulated by bits of the identification code. Circuits (8, 9, 10, 11, 12) of the transceiver receive and interpret the identification signal. The transponder includes a variable code generator (32) and a controller (31) for controlling the writing of the variable code into memory (33) so that the variable code constitutes part of the identification code. The variable code may be a random or pseudo-random code.
摘要:
A switching field for electromechanically switching electrical signal lines with crosspoints. The parts forming the crosspoints comprising membranes, at and between which further parts of the circuit are disposed. The switching field is particularly for communication and data transfer applications. The cross points are disposed matrix-shaped manner and signal lines assigned to the individual crosspoints. The crosspoints are composed of at least two contact surfaces which are movable relative to each other, to the one contact surface, a permanent magnet, and to the other contact surface, a ferromagnetic material with a coil assigned thereto.
摘要:
The invention relates to a fiber-optic connection arrangement, with the connection arrangement (21) comprising a fiber-optic adapter (2), with the fiber-optic adapter (2) having a first connecting device (38) for a first connecting plug (11) and a second connecting device (6) for a second connecting plug (17), with the first and the second connecting devices (38, 6) being different, with the fiber-optic adapter (2) having at least one first adapter-side attachment means, with the first adapter-side attachment means being in the form of an external thread (8) with a first adapter-side nominal diameter, wherein the connection arrangement (21) furthermore comprises an adapter sleeve (26), with the adapter sleeve (26) having a first end section (27) with a first opening (28), and a second end section (29) with a second opening (30), with the first end section (27) having a first sleeve-side attachment means, with the first sleeve-side attachment means being in the form of a first internal thread (36), with the first internal thread (36) having a first sleeve-side nominal diameter,with the first sleeve-side nominal diameter corresponding to the first adapter-side nominal diameter, with the adapter sleeve (26) being screwed onto the adapter-side external thread (8) such that at least the second connecting device (6) is arranged in an internal volume (47) in the adapter sleeve (26). The invention also relates to an adapter sleeve (26).
摘要:
A control valve device (1) for the control of a consumer (2), in particular of a dual-action consumer, includes a control valve (3) that controls the connection of an admission side of the consumer (2) with a pump and a return side of the consumer (2) with a reservoir. The control valve device (1) has a regeneration function by means of which the return side of the consumer (2) can be connected with the admission side of the consumer (2). The regeneration function has a short circuit device (10) located between the consumer (2) and the control valve (3) and provides a connection of the return side of the consumer (2) with the admission side of the consumer (2). For the regeneration function, the connection of the return side of the consumer (2) with the reservoir can be shut off by the control valve (3).