Abstract: A process and apparatus for guiding and keeping a material web spread out uses a spreading roll and with contact pressure elements and a control member controlled by a control system monitors the control path in a way such that the spacing of the contact pressure elements from the spreading roll is varied. Because of the advantages that the control path has in the present case, a rapid and stable control of the position of the material web is assured. This is advantageous especially in connection with highly sensitive material webs such as, for example, wide-meshed textile webs.

Abstract: An electronic control and regulation device for a machine or like apparatus has a plurality of printed circuit boards in a housing, each of the printed circuit boards having interconnected analog and digital circuitry with respective analog and digital terminals. The analog and digital terminals of all of the boards are interconnected respectively by analog and digital conductor bundles, the analog conductor bundle running to the machine or apparatus to be controlled, and serving as well to supply the electric current to the analog part of each printed circuit board.