Abstract: A totem pole output stage including first and second control modules cross coupled to first and second switching modules for measuring the charge on the gate of a FET contained in the opposing switching module to determine the condition of the opposing switching module, so as to avoid mutual conductivity events without the use of a fixed timing delay while maximizing switching performance.

Abstract: An electronic device for inserting an electronic card. The device has a fixed housing with a slot at the back for a connector and a slot at the front for engaging the card. A gripping device carries the electronic card. The gripping device includes a receptacle into which the card is inserted at its front end, with the back of the receptacle covering the card insertion slot. The gripping device also cooperates with an extraction device placed along the card. The extraction device includes a shoulder that comes into contact with the back end of the card to extract the card.

Abstract: Modular type subrack, in particular for programmable automatic controllers, which includes a plurality of modular compartments. Each part of the modular compartment that is not equipped with a functional module houses a dummy module that is, for example, snap-fastenable via a resilient tang to a locking member on a vertical partition of the subrack.

Abstract: A keypad dialog terminal in particular for dialog with a programmable automatic controller, comprising a casing (1) carrying a dialog screen (12) and a set of contacts (32) associated with a keypad (22), characterised in that the casing (1) comprises a casing body (11) carrying the fixed contacts and a removable dialog module (2) comprising a frame (21) closed by a visible top membrane (22) which forms various projecting keys and carries the mobile contacts (26), this frame (21) having removable locking apparatus (24, 25) adapted to cooperate with conjugate locking apparatus (14, 15) on the lateral sides of the casing body (11).

Abstract: Modular automation device including a compartmented chassis which delimits an internal volume and accommodates a plurality of interface modules. Each module can be locked by a lateral pivoting lever which is journaled on one of its side walls and which cooperates with a fixed locking member on a vertical partition of its compartment. Alternatively, the lever can be journaled on a side wall of the vertical partition with the locking member located on the module.

Abstract: Automation equipment includes at least one removable interface module containing processor electronics on at least one printed circuit electrically connected to an interconnect printed circuit carried by a support via respective connectors. The printed circuit is accommodated in a casing of the module fixed to the support and electrically connected to a conductive part of the latter by a frame ground connection device which has connecting members fastened to the support and to the module, whereby mutual electrical contact is established between the module and the support. The connection members include a male member and a female member adapted to cooperate plug-and-socket fashion, and the interconnect printed circuit includes an opening through which at least one of the connecting members passes when the module is mounted on the support. This connecting member is insulated from the interconnect printed circuit where it passes through the opening.

Abstract: A battery holder (25) holds a battery (27) in spaced relation to a printed circuit board (30), sufficient space (43) being provided between the printed circuit board (30) and the battery (27) for mounting of circuit components (47,49) on the printed circuit board (30) between the battery holder and the printed circuit board. A connection is provided between a connector (85) mounted on the printed circuit board (30) and a connector (82) mounted on leads (78) which are attached to the battery (27), the connection providing for the electrical connection and disconnection of the battery (27) and the printed circuit board (30). A housing (10) is provided for mounting the printed circuit board (30), battery holder (25) and battery (27) therein. The battery holder (25) is provided with a deformable retention clip (56) for retention of the battery (27) within a chamber (50,51) the holder (25), and in response to actuation by an operator, removal of the battery from the holder.

Abstract: Output control circuit for a programmable logic controller, comprising a control unit (13) and a circuit (14) for controlling and checking output channels (11), including a deserializing section (16). The output circuit receives descending frames (T1) and ascending frames (T2) and, according to its configuration, it returns ascending frames (T3) to the control unit produced from frames (T1) and/or (T2).

Abstract: A combination input/output (I/O) module for a microprocessor based device is disclosed. The combination I/O module includes a combination point which is operable as either an input point adapted for coupling to an input device, an output point adapted for coupling to an output device, or both. The combination I/O module provides continuous sensing of the presence or absence of the output device. The combination I/O module includes a triac and provides for continuous sensing of the conductive state of the triac.