Abstract: The present invention refers to a power supply unit for operating an electronic device in an explosion-proof area, comprising: a means (2) for providing a rectified input voltage (UE); a DC link capacitance (5) for buffering a DC link voltage; a phase section control (4) controlled to apply the rectified input voltage to the DC link capacitance (5) during a time period in which the rectified input voltage (UE) increases and is between a lower (Uu) and upper voltage threshold (Uo), and to disconnect the rectified input voltage from the DC link capacitance (5) in the remaining time periods; a converter circuit (7) configured to convert the DC link voltage (UZ) into an output voltage.

Abstract: The invention relates to an optical sensor according to the time-of-flight principle for detecting objects in a monitored region, having a first transmitter for transmitting first light pulses into the monitored region, a first receiver for detecting first light pulses radiated back by a first object to be detected in the monitored region, a second transmitter for transmitting second light pulses into the monitored region, a second receiver for detecting second light pulses radiated back by the first object or by a further object in the monitored region, a control and evaluation unit which is designed to control the first transmitter and to evaluate the first light pulses detected by the first receiver and to control the second transmitter and to evaluate the second light pulses detected by the second receiver, characterised in that between the first transmitter and the second receiver a first optical reference path is formed, between the second transmitter and the first receiver a second optical reference pa

Abstract: An inertial measurement device for providing output sensor data according to a force or motion applied on the inertial measurement device includes a sensor unit including one or more sensor elements for detecting motion and being configured to continuously provide motion sensor data samples for each of the sensor elements. A processing unit is configured to filter data depending on or corresponding to the motion sensor data samples obtained by the sensor elements in order to provide the output sensor data. The processing unit is configured to select one or multiple filter parameter sets determined by at least one predetermined rule applied on the sensor data samples and to filter the data based on the selected filter parameter set.

Abstract: An apparatus for the presentation of a code (1), in particular code tape or code strip, with a carrier (2) and at least one code (1) assigned to the carrier (2), is, with regard to a safe installation of several carriers (2) relative to one another, designed and further developed with structurally simple means in such a way that the carrier (2) has a coupling device (3) for coupling the carrier (2) to a further carrier (2).

Abstract: A limiting circuit, particularly for a power supply, includes a first reverse-polarized Zener diode connected and configured to limit a voltage between two output terminals depending on a first breakdown voltage, a second reverse-polarized Zener connected and configured to limit a voltage between two output terminals depending on a second breakdown voltage, a semiconductor switch coupled in series with the second Zener diode to open or close depending on a switching signal, a first shunt resistor coupled in a load path and with the first and second Zener diodes to carry the load current and the currents flowing through the first and second Zener diodes, and a comparating device configured to generate the switching signal depending on a voltage drop over the first shunt resistor.

Abstract: The invention relates to a crowbar circuit (1), in particular for use in a voltage transformer, comprising: a triggering device (P1) for triggering a short circuit via input terminals (E1, E2) depending on a control voltage a comparator (IC1), which is configured to trigger the triggering device for triggering the short circuit depending on a comparator voltage at a comparator input of the comparator and depending on a predetermined reference voltage threshold value, a Zener diode (NZ1) with a predetermined breakdown voltage in series with a fifth resistor (R5), which are connected between one of the input terminals and the comparator input, such that when the applied input voltage exceeds the breakdown voltage, the comparator voltage exceeds or falls under the reference voltage threshold value, thus triggering the short circuit; a series connection of a seventh resistor (R7), an eighth resistor (R8), the fifth resistor (R5) and a sixth resistor (R6), wherein a load current at an output of the crowbar circ

Abstract: A protection circuit for a power converter, particularly for explosion protection applications, includes a series connection of a reverse-polarized Zener diode and a resistor to be coupled between a high and a low potential supply line of the power converter. A semiconductor switch is directly coupled between the high and low potential supply line with its conduction path. A control terminal of the semiconductor switch is coupled with or controlled by a node between the Zener diode and the resistor.

Abstract: A 1D ultrasonic transducer unit for material detection, comprising a housing having securing device for securing to a surface and having at least three discrete ultrasonic transducers designed to decouple sound waves with a consistent operating frequency between 20 kHz and 400 kHz in a gaseous medium, and a control unit designed to control each ultrasonic transducer individually, wherein two ultrasonic transducers, directly adjacent to one another, are spaced apart by a distance, the 1D ultrasonic transducer unit has a sound channel per ultrasonic transducer with an input opening, associated with exactly one respective ultrasonic transducer, and an output opening, the output openings are arranged along a straight line, a distance from the directly adjacent output opening corresponds at most to the full or half the wavelength in the gaseous medium and is smaller than the corresponding distance.

Abstract: A 1D ultrasonic transducer unit for area monitoring, having a housing having a securing device for securing to a surface and having at least three discrete ultrasonic transducers designed to decouple sound waves with a consistent operating frequency between 20 kHz and 400 kHz in a gaseous medium, and a control unit designed to control each ultrasonic transducer individually, wherein two ultrasonic transducers, directly adjacent to one another, are spaced apart by a distance, the 1D ultrasonic transducer unit has a sound channel per ultrasonic transducer with an input opening, associated with exactly one respective ultrasonic transducer, and an output opening, the output openings are arranged along a straight line, a distance from the directly adjacent output opening corresponds at most to the full or half the wavelength in the gaseous medium and is smaller than the corresponding distance.

Abstract: A 1D ultrasonic converter unit having at least three ultrasonic converters and a control unit for individually controlling each ultrasonic converter, wherein each ultrasonic converter has a housing, a piezoelectric body, and a sound decoupling layer for decoupling sound waves in a gaseous medium, is embedded in a common carrier structure, and emits and/or receives the same frequency between 20 kHz and 400 kHz. Each ultrasonic converter has one sound channel having an input opening associated with one sound decoupling layer, and an output opening. The output openings are arranged along a line, a distance between two adjacent output openings corresponds at most to the whole or half the wavelength of the sound frequency and is smaller than the distance of the input openings.

Abstract: An inertial measurement unit for providing output sensor data according to a force or motion applied on the inertial measurement unit. The inertial measurement unit includes a sensor unit including one or more sensor elements for detecting motion. A filter unit includes one or more filter elements. The filter unit is configured to apply one or more filter elements on the sensor data according to filter parameters. A filter parameter unit includes a data-driven filter parameter model for providing filter parameters to the filter unit in response to the sensor data obtained from the sensor elements.

Abstract: A 1D ultrasonic transducer unit for detecting danger for a vehicle, comprising a housing mounted on the vehicle, which includes at least three discrete ultrasonic transducers, designed to decouple sound waves at a corresponding working frequency between 20 kHz and 400 kHz into a gaseous medium, and a control unit, designed to control each ultrasonic transducer individually, two ultrasonic transducers directly adjacent to each other in each case having a distance, the 1D ultrasonic transducer unit having one sound channel per ultrasonic transducer, each with one inlet opening assigned to exactly one ultrasonic transducer and one outlet opening (26), the outlet openings being arranged along a straight line, a distance from directly adjacent outlet openings corresponding to no more than the full or half wavelength in the gaseous medium and being shorter than the corresponding distance.

Abstract: Systems and methods are provided for performing operations comprising: accessing, by a transmitter physical layer (PHY) controller, data for transmission to a receiver PHY controller over a network connection; randomizing a delimiter independently of randomizing the data; selecting a disparity reset value based on the randomized delimiter to generate an initial miming disparity; encoding the randomized data based on the initial running disparity; generating a frame that includes the encoded randomized data and the randomized delimiter; and transmitting the frame from the transmitter PHY controller to the receiver PHY controller.

Abstract: Agricultural detection device, having a sensor unit, an evaluation unit and a control unit. The sensor unit includes a first sensor with a first directivity and is configured to emit a first transmission signal and to receive a first reflection signal. The first sensor has a second directivity and emits a second sensor signal with the second directivity and receives a second reflection signal, or the sensor unit has a second sensor with a second directivity arranged adjacent to the first sensor for emitting the second transmission signal and for receiving the second reflection signal. The evaluation unit is configured to ascertain at least the structure of plants and a height value from the first reflection signal and the second reflection signal.

Abstract: An explosion-protected device (1) comprises a deformable interior body (20) that comprises at least one line channel (30, 31) extending along a longitudinal axis (L) through the interior body (20) for a line. The line extends through the at least one line channel (30, 31). The interior body (20) is encompassed by a housing (2). The housing (2) is divided into an incoming section (3), an outgoing section (4) as well as a middle section (5) disposed between the incoming section (3) and the outgoing section (4). A spring element (25) is provided which is disposed in the middle section (5) and exerts pressure onto the interior body (20).

Abstract: A 1D ultrasonic transducer unit for material detection, comprising a housing having securing device for securing to a surface and having at least three discrete ultrasonic transducers designed to decouple sound waves with a consistent operating frequency between 20 kHz and 400 kHz in a gaseous medium, and a control unit designed to control each ultrasonic transducer individually, wherein two ultrasonic transducers, directly adjacent to one another, are spaced apart by a distance, the 1D ultrasonic transducer unit has a sound channel per ultrasonic transducer with an input opening, associated with exactly one respective ultrasonic transducer, and an output opening, the output openings are arranged along a straight line, a distance from the directly adjacent output opening corresponds at most to the full or half the wavelength in the gaseous medium and is smaller than the corresponding distance.

Abstract: There is provided a power conditioning circuit including positive and negative power input nodes. An inductor includes a first terminal connected to a positive power input node and a second terminal connected to a positive power output node, the inductor allowing the voltage at the positive power output node to be modulated by data that is sent through a communication interface. A first node is present between the second terminal of the inductor and the positive power output node, and a clamping circuit is connected at the first node to a second node. The clamping circuit is configured to clamp a voltage increase across the inductor to less than a maximum increase. The second node is configured to be continuously held at a voltage higher than the voltage of the first terminal of the inductor.

Abstract: An inductive sensor, particularly for a proximity sensor, includes a resonance circuit including a sensing coil and an amplifier comprising a first gain stage and a second gain stage each coupled via respective adjusting elements with the resonance circuit to inject energy for maintaining an oscillation of the resonance circuit. The first gain stage provides a substantially linear amplification and the second gain stage provides a comparator characteristics.

Abstract: A current output apparatus adapted for electrical connection to a load to output an electrical current thereto. The apparatus comprises a current output terminal for connecting to a first terminal of the load to pass an electrical current thereto. A current input terminal is provided for connecting to a second terminal of the load to receive said electrical current returned from the load. A voltage regulator is operable to supply to the current output terminal an electrical voltage regulated to differ from an electrical voltage applied to the current input terminal by an amount sufficient to cause said electrical current to flow from the current output terminal to the current input terminal via the load.

Abstract: A clamping device with a housing, with a piston with piston rod running in the housing, and with a monitoring unit arranged at least partially in the housing, wherein the monitoring unit includes at least two sensor units. The sensor units are spaced apart from one another along a longitudinal axis of the piston rod, and are arranged at a distance from the piston rod. The piston and the piston rod, and a metallic signal transmitter arranged on the piston or on the piston rod, are movable in a positively driven manner between a first end position and a second end position. The first sensor unit is arranged at the first end position of the signal transmitter, and the second sensor unit is arranged at the second end position of the signal transmitter. Each sensor unit has a first and second sensor and includes an induction coil and an oscillator.