Abstract: A system for detecting tampering with a product includes a capacitor in or attached to the product, an integrated circuit configured to inject a current the capacitor and to detect a corresponding voltage slope on the capacitor. The integrated circuit is further configured to divide the voltage slope into a plurality of slope segments, discard a first set of slope segments, whose slope value falls outside a predefined range of slope values, and use a second set of slope segments, whose slope value falls within said predefined range, for determining a capacitance on the capacitor. A corresponding method for detecting tampering with a product is conceived, and a corresponding computer program is provided.

Abstract: An electric circuit for generating a pulse width modulated output signal is provided. The electric circuit includes at least one power supply signal input and a first circuitry configured to generate and output an intermediate signal based on the power supply signal input. Further, the electric circuit includes a second circuitry configured to generate the pulse width modulated output signal based on the intermediate signal. The second circuitry includes an energy storage element and a charging/discharging circuitry configured to charge and discharge the energy storage element using the intermediate signal to modify an energy state of the energy storage element. The second circuitry is configured to generate the pulse width modulated output signal based on the energy state of the energy storage element.

Abstract: A system for detecting tampering with a product includes a capacitor in or attached to the product, an integrated circuit configured to inject a current the capacitor and to detect a corresponding voltage slope on the capacitor. The integrated circuit is further configured to divide the voltage slope into a plurality of slope segments, discard a first set of slope segments, whose slope value falls outside a predefined range of slope values, and use a second set of slope segments, whose slope value falls within said predefined range, for determining a capacitance on the capacitor. A corresponding method for detecting tampering with a product is conceived, and a corresponding computer program is provided.

Abstract: A reference voltage generator circuit (100) is disclosed, comprising a first transistor (101) having a first channel type and a second transistor (102) having a second channel type. A current source (104) is connected to a source terminal of the first transistor (101). A drain terminal of the second transistor (102) is connected to a drain terminal of the first transistor (101). The reference voltage generator circuit (100) further comprises a third transistor (103) having the second channel type, wherein a drain terminal of the third transistor (103) is connected to a source terminal of the second transistor (102). A node between the source terminal of the second transistor (102) and the drain terminal of the third transistor (103) is connected to a gate terminal of the first transistor (101). A connection for a reference voltage (Vrc) is provided between the current source (104) and the source terminal of the first transistor (101).

Abstract: According to a first aspect of the present disclosure, an electronic tamper detection device is provided, comprising a radio frequency antenna, a tamper loop, a power level determination unit and a tamper measurement unit, wherein: the power level determination unit is configured to determine a power level of the tamper detection device; the tamper measurement unit is configured to generate a measurement signal and to transmit said measurement signal through the tamper loop; the tamper measurement unit is further configured to adapt the measurement signal in dependence on the power level. According to a second aspect of the present disclosure, a corresponding tamper detection method is conceived. According to a third aspect of the present disclosure, a corresponding non-transitory computer-readable storage medium comprising instructions is provided.

Abstract: A drag torque reduction device for an automatic transmission includes a hydraulic controller with a radiator. In one embodiment, the drag torque reduction device also includes a parallel connection of a pressure relief valve, a constant aperture and a temperature-dependent, switchable aperture positioned upstream of the radiator. In another embodiment, the drag torque reduction device includes an overflow cooling oil diversion with a temperature-dependent, switchable aperture and a pressure relief valve that is positioned upstream of the radiator.

Abstract: A reference voltage generator circuit (100) is disclosed, comprising a first transistor (101) having a first channel type and a second transistor (102) having a second channel type. A current source (104) is connected to a source terminal of the first transistor (101). A drain terminal of the second transistor (102) is connected to a drain terminal of the first transistor (101). The reference voltage generator circuit (100) further comprises a third transistor (103) having the second channel type, wherein a drain terminal of the third transistor (103) is connected to a source terminal of the second transistor (102). A node between the source terminal of the second transistor (102) and the drain terminal of the third transistor (103) is connected to a gate terminal of the first transistor (101). A connection for a reference voltage (Vrc) is provided between the current source (104) and the source terminal of the first transistor (101).

Abstract: According to a first aspect of the present disclosure, an electronic tamper detection device is provided, comprising a radio frequency antenna, a tamper loop, a power level determination unit and a tamper measurement unit, wherein: the power level determination unit is configured to determine a power level of the tamper detection device; the tamper measurement unit is configured to generate a measurement signal and to transmit said measurement signal through the tamper loop; the tamper measurement unit is further configured to adapt the measurement signal in dependence on the power level. According to a second aspect of the present disclosure, a corresponding tamper detection method is conceived. According to a third aspect of the present disclosure, a corresponding non-transitory computer-readable storage medium comprising instructions is provided.

Abstract: A drag torque reduction device for an automatic transmission includes a hydraulic controller with a parallel connection of a pressure relief valve, a constant aperture and a temperature-dependent, switchable aperture that is positioned upstream of a radiator relative to a flow of fluid to the radiator. The parallel connection is disposed between a first control edge of a converter switching valve and a first line. The first line leads to both to the radiator and through a check valve to the converter ring. The first control edge of the converter switching valve is open and lubricating oil flows through the parallel connection when the converter switching valve is in a first switching position. The first control edge of the converter switching valve is closed and lubricating oil does not flow through the parallel connection when the converter switching valve is in a second switching position.

Abstract: A drag torque reduction device for an automatic transmission includes a hydraulic controller with a diversion for excess cooling oil into an oil sump that is positioned upstream of a radiator relative to a flow of fluid to the radiator. The diversion includes a temperature-dependent, switchable aperture and a switching valve. The temperature-dependent, switchable aperture is configured to close above a temperature threshold. The switching valve is configured to close above a threshold pressure.

Abstract: A drag torque reduction device for an automatic transmission includes a hydraulic controller with a radiator. In one embodiment, the drag torque reduction device also includes a parallel connection of a pressure relief valve, a constant aperture and a temperature-dependent, switchable aperture positioned upstream of the radiator. In another embodiment, the drag torque reduction device includes an overflow cooling oil diversion with a temperature-dependent, switchable aperture and a pressure relief valve that is positioned upstream of the radiator.

Abstract: The automatic transmission, which is intended for motor vehicles in particular, has an internal gear pump for supplying a hydrodynamic converter, a lubricating device and control and actuation devices of the automatic transmission, via a main pressure valve. An excess flow returns from the main pressure valve back to the internal gear pump via a feed channel (18). The feed channel (18) has a cross section which is steadily reduced in the direction toward the internal gear pump and has a feed nozzle (20) on its end facing the internal gear wheel pump. The feed channel (18) with its feed nozzle (20) terminates near the suction zone of the internal gear pump in a suction channel (14) connected with a reservoir. To simplify manufacture and to improve the function, the latter, in particular with a view to an advantageous charging of the internal gear pump, the feed channel (18) and the feed channel (20), are cast in the pump housing (1) by the lost-wax method.

Abstract: A multi-component extruder for producing a multi-component profiled member has at least two individual extruders for extruding a single-component profiled member. Each individual extruder has a housing with a chamber for receiving the extrudable material and an extruder shaft rotatably supported in the chamber. Each individual extruders has an extruder mold nozzle for continuously extruding the single-component profiled member. The individual extruders are equipped with devices for measuring pressure and temperature. A common extruder head has a confluence zone in which the extruder nozzles are arranged to combine the single component profiled members to the multi-component profiled member. A device for measuring the multi-component profiled member is provided.

Abstract: A method for reverse degassing a melt of thermoplastic plastics material and an extrusion device therefor. Thermoplastic plastics materials are fed into the extrusion device either in the form a melt or as a granulated, which latter is fused to form a melt. A portion of the melt is separated from the main melt stream. The extrusion device includes, in a downstream direction, a return-blocking zone, a degassing zone, a feed zone and a conveying zone. The separated portion is removed from the feed zone, the conveying zone or even a feed conduit leading into the feed zone if the material is already molten. The extrusion device also includes screw means rotating in a barrel. The screw has at least two different flight portions, one in the returning-blocking zone and the other in at least the degassing zone.

Abstract: A method of extruding a foamed thermoplastic plastics material wherein the thermoplastic plastics material, together with a pore regulating agent, is introduced into an extruder and is fused. Gaseous nitrogen, in an amount of 0.2% to 0.5% by weight, and an incompletely halo-substituted hydrocarbon, in an amount of from 0.5% to 2% by weight, are sequentially injected into the fused mixture. The injected material then enters an extrusion head in which the mixture is maintained at a pressure in excess of 55 bar and the temperature thereof is maintained above a temperature pre-determined in dependence upon the nature of the plastics material. The material foams as it leaves the extrusion head.

Abstract: A screw extruder for processing thermoplastic materials wherein a vacuum is applied to the feed opening for the material and/or to a filling section of the cylinder for the purpose of reverse degasification, said extruder having a simultaneously rotating pressure piece between a screw and a back pressure bearing and having a stationary end piece disposed on the screw side in front of the rotating pressure piece and sealing means comprising at least two axially spaced radial sealing rings and a vacuum source to apply vacuum to an annular interspace formed between the sealing rings.

Abstract: 1-(4-nitrophenyl)-2-methyl-4-nitroimidazole has been found to be highly useful as an alcohol deterrent.

Abstract: A process for the production of novel polyimide polymers and copolymers which comprises reacting a cyclooctadiene-1,2,5,6-tetracarboxylic acid bisanhydride, or a derivative of same, with an amine, or mixture of amines, of the formula H.sub.2 N--A--NH.sub.2 wherein A designates an aliphatic, an aromatic, an araliphatic or a heterocyclic group, which may be substituted. Novel polyimides obtained by such process.

Abstract: Aliphatic alcohols are producted by reducing the corresponding aldehydes and ketones by contact with a molecular sieve zeolite having adsorbed therein a secondary alcohol which acts as a hydrogen donor agent.

Abstract: Dentifrice composition containing a monofluorophosphate and polishing agent containing calcium carbonate and insoluble alkali metal metaphosphate, alumina or mixture thereof. The ratio of calcium carbonate to insoluble alkali metal metaphosphate and to alumina is about 3:1 to about 1000:1. This dentifrice retains a desirable level of soluble fluoride upon aging and when insoluble alkali metal metaphosphate is present, does not cause substantial corrosion of unlined aluminum containers.