Abstract:
The invention relates to a device (10) for producing a seal between a first part (12) and a second part (14), especially a first housing part (12a) and a second housing part (14a). The seal can be produced according to a physical property of an electroactive plastic material which can be modified. The invention also relates to a device for receiving an electrical circuit and/or a device comprising electrical switching means, having at least one first and one second housing part (12a, 14a) operating as a first part and a second part (12, 14), with an above-mentioned device (10). The invention further relates to a method for producing a seal between a first part (12) and a second part (14), especially a first housing part (12a) and a second housing part (14a), by means of such a device (10), a first electrical voltage being applied to create the seal, and a second electrical voltage being applied to lift the seal.
Abstract:
The invention specifies a current-sensing apparatus and a method for its operation which is based on the current sensor provided being a GMR sensor in the form of a gradient sensor (32) and on the gradient sensor (32), or a component (12) which comprises this gradient sensor (32), itself comprising a conductor section (14) of a compensating circuit (16), which means that the current in the measurement circuit can be compensated for by a current in the compensating circuit (16) and the compensating current can be evaluated as a measure of the electrical variable to be detected for the measurement circuit (10).
Abstract:
The invention relates to a method for the starting up of at least one first field instrument (104), wherein the method comprises the step of signaling a first demand for electrical power output (146) of the first field instrument over a first port (120) to a supply unit (102). According to this method, the first field instrument is previously connected to the supply unit over the first port by means of a first communication connection (144). In addition, the reception of the power output is effected according to the first demand for power output by the first field instrument over the first communication connection and the first port, by which the first field instrument is activated. In an additional step, a power usage unit (124) of the first field instrument is assigned to the first port, wherein the power usage unit is provided as consumer load for the power output. In addition, the allocation of a power supply unit (126) of the first field instrument is effected to a second port (122), with the power supply unit provided for the supply of an additional second power output (152) over the second port. In a different aspect, the invention relates to a field instrument and a supply unit. The invention is particularly suited for the supply of field instruments over an Ethernet connection (power over Ethernet), wherein several inline switched Ethernet field instruments according to the invention can be supplied with electrical power by one upstream supply unit such as a PoE switch.
Abstract:
Magnetic field sensors made of magnetoresistive elements are known, wherein four such elements are used in a bridge circuit. As is known, such magnetoresistive elements, in which a measuring current can be detected as the magnetic field signal, have a characteristic curve affected by hysteresis. In order to reduce or minimize hysteresis, at least one high frequency end magnetization pulse is superimposed on the measuring current, thus significantly improving the measuring properties. For this purpose, a conductor loop (45), preferably with magnetoresistive sensor elements (41m -44) switched in a bridge circuit, is connected into the sensor (40).
Abstract:
A photovoltaic installation (PVA) for feeding an electric grid (SN) comprises a plurality of solar inverters (M1-M4) whose outputs feed the electric grid, and a plurality of photovoltaic generators (SM1-SM4) connected each to an input of a solar inverter. A communication bus (BUS) interconnects the solar inverters so as to permit data exchange. A central control and monitoring device (MAS) is also connected to the communication bus for controlling and monitoring the solar inverters and has a network monitoring system (ENS) which switches off the solar inverters at least temporarily when predeterminable grid monitoring criteria are not complied with. The great advantage is that a central control and monitoring device takes on exclusively grid monitoring functions, so as to prevent the otherwise modular solar inverters fitted with their own grid monitoring systems from influencing one another, and also preventing the unnecessary switching-off of individual solar inverters.
Abstract:
In plasma deposition processes for producing an optical preform according to the POD method, a cladding glass layer composed of fluorine-doped quartz glass is produced by means of a plasma torch on a cylindrical substrate body composed of quartz glass, said substrate body rotating about the longitudinal axis thereof. In this case, the plasma torch performs a reversing relative movement between two turning points (A; B) along the substrate body. In order, proceeding therefrom, to achieve a high fluorine doping in conjunction with a dopant distribution that is as uniform as possible axially, the invention proposes that a heat element has a heating effect on the region of one turning point (A; B) when the plasma torch is situated in the region of the other turning point (B; A).
Abstract:
The present invention relates to new saponins for increasing the immune response in mammals and finds application in the field of immunology, supplying in particular new adjuvants, obtained by hemi-synthesis, starting from terpene sources. It also embraces the methods for the use of the new saponins as adjuvants to increase the immune response to an antigen in a mammal. The saponins of the present invention are suitable for veterinary and human pharmaceutical compositions which include one or more antigens, in particular those of synthetic origin, and one or more diluents, in pharmaceutically acceptable vehicles. These compositions can be used as immunopotenciators and/or immunomodulators in animals and human beings. The present invention further constitutes a vaccination method that includes the administration of one or more antigens and one or optionally more than one hemi-synthetic saponin of the invention.
Abstract:
A vehicle air bag electrical system including an air bag control module; electrical conductors connected to the control module; an electrical connector connected to the electrical conductors; and a filter circuit coupled to the electrical conductors. The filter circuit comprises a plurality of capacitors provided as a module. The electrical connector is adapted to be connected to an air bag gas initiator.
Abstract:
In a known process for the manufacture of a preform for optical fibres of quartz glass using a plasma burner (1), this is operated in a deposition phase and a smoothing phase, a silicon-containing starting substance being supplied to the plasma burner during the deposition phase, SiO 2 being formed therefrom in a plasma flame allocated to the plasma burner and this SiO 2 being deposited in layers on the cylinder jacket surface (9) of a substrate body (3) rotating around its own longitudinal axis by reversing movement of the plasma burner along the substrate body and being vitrified directly during this process into quartz glass of the preform and the preform surface being treated during the smoothing phase, by the plasma flame moving at least once along the preform, with a temperature which is higher in comparison with deposition phase such that smoothing of the preform surface and melting of the near-surface bubbles are effected. In order to indicate an economic process on this basis which allows the manufacture of low bubble content or bubble-free preforms with an acceptable time and material expenditure, it is suggested according to the invention that the deposition phase comprises a multiplicity of successive deposition sub-phases in the course of which a quartz glass layer is produced in a thickness of less than 400 µm, successive deposition sub-phases being interrupted by a smoothing phase.
Abstract:
An electrical filter assembly including a housing; at least one electrical wire extending into the housing; and a filter subassembly on the housing, the filter subassembly comprising a lead frame and a filter circuit connected to the lead frame. The filter circuit has a plurality of capacitors attached to the lead frame as a modular block. The lead frame comprises at least one insulation displacement contact section which makes electrical connection with the at least one electrical wire.