摘要:
A mounting frame for a switchgear cabinet or a rack includes mounting pieces which are arranged, as corner pieces, in the four corner sections of a rectangle or square that extends in an x-y plane, the mounting pieces being produced in a respective shaping process and having outer first and second mounting faces which extend in the x direction and in the y direction at a right angle thereto and which extend in a space direction z at a right angle to the x-y plane, and are provided with hollow spaces which are at least partially surrounded by wall parts and/or bores that are oriented in the z direction. The mounting frame further includes intermediate elements which extend between the mounting pieces in the x direction and in the y direction and the end sections of which are fastened to the mounting pieces. The mounting pieces have wall sections which extend in parallel to the x-y plane, thus making assembly easier.
摘要:
A base or a mounting frame for an electrical enclosure or a rack, includes mounting pieces which are arranged, as corner pieces, in the corner regions of a rectangle or square that extends in an x-y plane. The mounting pieces are produced in a respective shaping process and include first and second mounting faces which lie outside with respect to the rectangle or square, which extend in the x direction and in the y direction at a right angle thereto and which extend in a space direction z at a right angle to the x-y plane. Sections of a system of covers are brought into contact with the mounting faces, where the covers having lateral covers with cover walls that are flat on the exterior and that have reinforcing ribs extending longitudinally on the interior, and are fastened to receiving structures of the mounting pieces by connecting structure.
摘要:
The invention relates to a mounting frame for a switchgear cabinet or a rack, comprising mounting pieces which are arranged, as corner pieces, in the four corner sections of a rectangle or square that extends in an x-y plane, said mounting pieces being produced in a respective shaping process and having outer first and second mounting faces which extend in the x direction and in the y direction at a right angle thereto and which extend in a space direction z at a right angle to the x-y plane, and are provided with hollow spaces which are at least partially surrounded by wall parts and/or bores that are oriented in the z direction. The mounting frame further comprises intermediate elements which extend between the mounting pieces in the x direction and in the y direction and the end sections of which are fastened to the mounting pieces. The mounting pieces have wall sections which extend in parallel to the x-y plane, thus making assembly easier.
摘要:
In order to create a noise elimination device for the detection of the vertical sync pulse in video signals, which has a very fast locking behavior and in which additional components can be integrated easily, which components can measure fundamental parameters of the underlying composite video signal, it is proposed that the device comprises a vertical pulse detector (12), which detects successive vertical sync pulses in the composite video signal and a VPLL (vertical phase locked loop), which comprises at least a phase detector (18) that produces a phase error, at least a loop filter (20), at least an oscillator (16) on which the output signal of the vertical pulse detector is present as an input signal and which oscillator produces a clock signal phase-synchronized with the input signal, whereas the oscillator (16) is a counter which counts with an approximately constant clock frequency, while the length of an oscillation period of the oscillator (16) is determined by the change in its count due to a correction value produced by the loop filter.
摘要:
The invention relates to a base or a mounting frame for an electrical enclosure or a rack, comprising mounting pieces which are arranged, as corner pieces, in the corner regions of a rectangle or square that extends in an x-y plane, said mounting pieces being produced in a respective shaping process and comprising first and second mounting faces which lie outside with respect to the rectangle or square, which extend in the x direction and in the y direction at a right angle thereto and which extend in a space direction z at a right angle to the x-y plane, wherein sections of a system of covers are brought into contact with the mounting faces, said covers having lateral covers with cover walls that are flat on the exterior and that have reinforcing ribs extending longitudinally on the interior, and being fastened to receiving structures of the mounting pieces by connecting means. Benefits in the installation process are achieved in that the lateral covers have cover fastening elements formed onto the interior of the lateral covers and are fastened directly or indirectly to the receiving structures of the mounting pieces by means of said cover fastening elements.