Abstract: A method for manufacturing a sensor. The sensor includes a sensing element and a housing, the housing including an interior space, which is accessible through a housing opening, and the sensing element being situated in the interior space and being designed to detect a property and/or a composition of an ambient medium of the sensor. The method includes filling the interior space with a protective medium through the housing opening, the protective medium being designed to transfer the property and/or the composition of the ambient medium to the sensing element; fixing a preferably flexible diaphragm at or in the housing opening preferably for sealing the housing opening, the diaphragm including at least one diaphragm opening; and sealing the at least one diaphragm opening. A sensor, which is manufactured according to this method, is also described.

Abstract: A circuit arrangement for processing an input video signal (V) is described, which video signal has a fixed black level (SP), a given white peak value (WW) as well as a black peak value (SW) dependent on the picture contents (during tb), in which a correct display of the blackest and brightest parts of the picture contents of the video signal (V) is rendered possible without many components and without interference.

Abstract: A multiplying digital-to-analog converter which includes an R-2R chain network is characterized in that, for partial or complete potential equalization, the chain network for an n-bit-wide digital signal applied to the converter comprises (n+m) connection points, where n,m are natural integers greater than zero, the connection point (n+m) produces the output signal of the converter. A first current mirror is provided which produces a constant first current that can be switched to the individual connection points (1+m) to (n+m). The least significant bit of the digital signal is allocated to the connection point (1+m) and the most significant bit to the connection point (n+m) and the first current is switched only to those connection points whose allocated bit has a first state.

Abstract: A circuit for the compensation of a control current of a first transistor whose main current path is arranged in series with a main current path of a second transistor between two supply voltage terminals. The arrangement includes a current mirror circuit including two transistors having a common terminal connected to the one supply voltage terminal which is coupled to the second transistor. The input terminal of the current mirror is connected to a control terminal of the second transistor and its output terminal is arranged to supply a compensation current to a control terminal of the first transistor.

Abstract: The invention relates to a quartz oscillator comprising two transistors to whose base terminals the collector voltage of each one of the other transistors is applied, a two-terminal network incorporating a quartz resonator being connected to the emitter of one of the transistors. The collector voltage is applied to the corresponding base via a semiconductor junction. The oscillator further includes respective emitter and collector impedances for the transistors in which the product of the emitter impedances is greater than the product of the collector impedances. When the supply voltage is sufficiently low so that the collector-base diodes of the transistors are always in the non-conducting state, the oscillator frequency is independent, to a very large degree, of saturation phenomena of the two transistors. When manufactured in integrated circuit form, only one additional exterior terminal is required for the connection of a quartz resonator.

Abstract: In magnetic video-tape equipment of the helical-scan type the vertical synchronizing information is situated at the beginning of a track near the edge of the magnetic tape. When the edge portion of the magnetic tape does not cooperate correctly with the head in the case of a faulty magnetic tape or apparatus, the vertical synchronizing information is not scanned and the resulting picture will roll in a vertical direction. However, since the beginning of a track coincides with the edges of the head-change signal, the vertical synchronizing information, in accordance with the invention, is always derived from the head-change signal, i.e. even during normal undisturbed operation, and is added to the CVBS signal, the signal scanned from the magnetic tape being blocked during this time.

Abstract: Field synchronizing circuit arrangement for a television device, in a television receiver or a video magnetic tape reproduction, a frequency divider circuit coupled to the line oscillator producing a field control signal defined by the standard in the absence of an incoming synchronizing signal (indirect synchronization), the frequency divider circuit being rest when said incoming synchronizing signal is present again.

Abstract: A container for holding in an orderly assembly objects such as writing instruments, tools, cigarettes and other similar objects, has a pair of substantially identically shaped covers provided with opposed peripheral rims, a cover pivoting means adjacent each pair of opposing rims of said covers to mount the covers pivotally together onto a receptacle to form said container to fold or close and to unfold or open. The rims have a combined depth at least equal to the width of the receptacle to accommodate it in the closed position of the covers. The container has at least one pivotable receptacle for holding at least one of said objects, said receptacle having part of said pivoting means and a bottom surface adjoining said pivoting means, said receptacle being mounted between the rims of the said covers to said pivoting means. On opening the container the receptacle is automatically erected and exposed for ease of handling of the articles and visual inspection.

Abstract: A switch for a varicap tuner has a differential amplifier. A feedback circuit comprising a current mirror and a feedback amplifier ensures equal current flow in the difference amplifier transistors, and thereby ensures temperature compensation.

Abstract: A great limitation of the tolerance in the touch sensitivity is obtained by a special touch control arrangement.