Abstract: On operation of a printer for a digital tachograph in a motor vehicle, the input of the specification for the desired print is regularly time-consuming and error-prone due to the deep menu structure of the user guide. A solution is provided whereby the print medium (3), in addition to the size format, comprises an additional layout (21) and the print unit (12) of the printer (2) outputs a particular content of the impression on the print medium (3) depending on the embodiment thereof. The user can thus specify the desired content of the impression with selection of a print medium (3) for an advantageous sectional introduction.

Abstract: A display instrument (1), in particular, for a motor vehicle, has a housing (2) retaining a cover disc (3) and a connector element (10), connecting the housing (2) and the cover disc (3) which engages in a housing recess (11), arranged on the housing (2). A secure connection of housing (2) and cover disc (3) for the display instrument (1) may be achieved, whereby the connector element (10) is arranged in the housing recess (11) and a disc recess (12), corresponding to the housing recess (11) on the cover disc (3), under tension. In the method for production of the display instrument (1), the connector element (10) is introduced under tension into the housing recess (11) and the disc recess (12) such as to connect the housing (2) and the cover disc (3) together. The method for disassembly of the display instrument (1) is based on pressing the connector element (10) out of the housing recess (11) and/or the disc recess (12).

Abstract: The invention relates to a display instrument (1), in particular, for a motor vehicle, comprising a housing (2) retaining a cover disc (3) and a connector element (10), connecting the housing (2) and the cover disc (3) which engages in a housing recess (11), arranged on the housing (2). The invention further relates to a method for production of a display instrument (1) and a method for disassembly of a display instrument (1). According to the invention, a secure connection of housing (2) and cover disc (3) for the display instrument (1) may be achieved, whereby the connector element (10) is arranged in the housing recess (11) and a disc recess (12), corresponding to the housing recess (11) on the cover disc (3), under tension. In the method for production of the display instrument (1), the connector element (10) is introduced under tension into the housing recess (11) and the disc recess (12) such as to connect the housing (2) and the cover disc (3) together.

Abstract: The invention relates to a device for the control of fluorescent lamps in a lighting arrangement that comprises at least one such fluorescent lamp, wherein for each fluorescent lamp the device has the following characteristics: a capacitive voltage divider consisting of a first capacitor and a second capacitor that are connected in series to the fluorescent lamp, a switch that is connected in parallel to one of the capacitors, means of measuring the momentary lamp current that flows through the fluorescent lamp and a control circuit to generate an input signal for the semiconductor switch depending on the momentary lamp current.

Abstract: The invention relates to a combined instrument display device for installation in a motor vehicle, and a drive device with which the position of the display device relative to the vehicle can be modified so as to allow for glare-free reading. The position of the display device is modified automatically by an installed electronic circuit that controls the drive device subject to defined parameters. The parameters may be measuring values of light sensors and/or motion sensors mounted on the vehicle and/or values that are determined by an evaluation unit using a database.

Abstract: The invention relates to a device for the control of fluorescent lamps in a lighting arrangement that comprises at least one such fluorescent lamp, wherein for each fluorescent lamp the device has the following characteristics: a capacitive voltage divider consisting of a first capacitor and a second capacitor that are connected in series to the fluorescent lamp, a switch that is connected in parallel to one of the capacitors, means of measuring the momentary lamp current that flows through the fluorescent lamp and a control circuit to generate an input signal for the semiconductor switch depending on the momentary lamp current.

Abstract: A device for displaying pictograms in a vehicle wherein the device comprises a control unit and a display unit, in particular an LCD display unit, the control unit controlling the display unit, and a method for operating the device, wherein a) the display unit is divided into symbol fields (2, 3, 4, 5, 6) which are arranged one next to the other in a row, the control unit only ever displaying one pictogram in each symbol field simultaneously, b) the control unit always displays in a specific symbol field (2) each new pictogram which is to be displayed in the symbol fields (2, 3, 4, 5, 6) which are arranged one next to the other in a row, and displaces by one symbol field the pictograms which have already been displayed, without changing their order, c) a control element (13) is provided with which a coherent section of the pictograms which are arranged one next to the other in a row can be displayed in the symbol fields of the display unit if more pictograms are to be displayed simultaneously than symbol fie

Abstract: The invention relates to a combined instrument display device for installation in a motor vehicle, and a drive device with which the position of the display device relative to the vehicle can be modified so as to allow for glare-free reading. The position of the display device is modified automatically by an installed electronic circuit that controls the drive device subject to defined parameters. The parameters may be measuring values of light sensors and/or motion sensors mounted on the vehicle and/or values that are determined by an evaluation unit using a database.

Abstract: In a combination instrument for a motor vehicle, in particular for a utility vehicle or a bus, having an LC display (1), a light-guiding plate (4) is provided, into which ambient light is injected from inside or from outside the motor vehicle, in which the injected ambient light is guided by total reflection at the side of the LC display (1) facing away from the viewer and which has, at the side of the LC display (1) facing away from the viewer, a coating (11) or a structure (13) for extracting the ambient light out of the light-guiding plate (4) there and for injecting the ambient light into the LC display (1). This measure backlights the LC display (1), leading to a significant increase in the contrast for information displayed on the LC display (1).

Abstract: A circuit arrangement for the controlled return of a pointer driven by a stepping motor in the event of failure of the supply voltage includes a control circuit for actuating the stepping motor. The supply voltage at least for the control circuit for the stepping motor is buffered with at least one buffer capacitor, the capacitance of the at least one buffer capacitor being such that the buffer capacitor supplies the control circuit for the stepping motor with electrical power at least until the control circuit has moved the pointer driven by the stepping motor to a default position. The default position is a zero position in relation to the scale on the display apparatus or to another indicated value which is noncritical in relation to the scaling on the display apparatus.

Abstract: An electromechanical device for mounting an electronic assembly on a mounting rack, in particular for mounting a display instrument recessed in a dashboard. There is at least one conductive Velcro-type connector between the electronic assembly (6) and the mounting rack (7), the conductive Velcro-type connector serving both for the mechanical fastening and the electrical contacting of the assembly (6) on the mounting rack (7).

Abstract: A frequency dividing circuit arrangement is disclosed which comprises a multivibrator or with feedback for dividing frequencies. A current registering means is connected to the output of the multivibrator. The curt registering means registers the output current of the multivibrator and causes the multivibrator to be reset when all overload or fault occurs. As soon as the fault state is eliminated, it is possible to resume normal operation without a cooling down phase. Thermal overloading of an output stage can thus be advantageously avoided. The frequency divider circuit is preferably provided for application in motor vehicles.

Abstract: For an indicating device with a pointer, in which the pointer comprises a rotary pointer spindle 2 and a pointer vane 1 arranged radially on the pointer spindle 2, the pointer vane 1 being deflected according to a rotation of the pointer spindle 2, in addition to its ability to pivot as a result of the rotation of the pointer spindle 2, the pointer vane 1 is also rotatable about the axis 13 of its radial extent and the pointer vane 1 has at least two boundary surfaces 11a, 11b or 12a, 12b and 12c which can be distinguished from one another in their appearance.

Abstract: In order to control the operating voltage of a fan in electrical equipment, the temperature of an output diode (D) of an output circuit of the power supply of the electrical equipment is monitored. The operating voltage of the fan is controlled as a function of the component temperature of this physical element such that up to a limit temperature, which is in the region of the maximum permissible component temperature of a physical element which absolutely becomes the hottest, the operating voltage of the fan is regulated at a constant, minimum level. The operating voltage is then regulated to rise continuously and rapidly up to a maximum operating voltage at which, although the component temperature of the physical element which absolutely becomes the hottest is still above the limit temperature, it is below the maximum permissible component temperature of this physical element, however.