Abstract: A device for converting an electric current signal into a mechanical correcting variable, includes a pneumatic correcting element (1) with slide rod (2), a pneumatic amplifier (3), a compressed-air supply (4) and an electropneumatic signal converter which has a solenoid (5) with coil, iron circuit and air gap, a nozzle/baffle-plate device (6), and a lever (8) which is swingably mounted on a tensioning band (7). One end of the tensioning band (7) is mounted for turning around its longitudinal axis and, perpendicular to the longitudinal axis there is arranged a feedback lever (12) one end of which is attached, fixed in rotation, to the turnable end of the fastening belt (7) while its free end is coupled to the slide rod (2) of the pneumatic correcting element (1).

Abstract: A mounting for installation of electronic apparatus in switchboards or consoles has a shell-like housing 1 with front-side opening 2 which can be closed by a cover panel 3. Approximately parallel to the bottom surface of the housing 1, a first circuit board 7 is arranged in the housing onto which circuit board at least one additional circuit board 9 which extends approximately vertically upward and possibly bears electronic components can be plugged, establishing an electric connection to the first circuit board 7. The first circuit board 7 and the additional circuit boards 9 can be arranged on a circuit-board holder 6. The lines which lead to external units can be connected to plug connections 10 which are connected in electrically conductive manner to the first circuit board 7.