Abstract: An arrangement for retaining a printed circuit board on a frame is disclosed. Connectors are mounted on the printed circuit board and have electrical connection pins connected to electrical conductors in the printed circuit board. The connectors are elongate and have end portions bearing against the front of the printed circuit board. The frame has holders coacting with the end portions, and these holders retain the connectors and the printed circuit board. The frame has a tongue engaging against the front of the end portion, and a movable support is kept in engagement against the back of the printed circuit board behind the tongue with the aid of a screw. The forces occurring when a means complementary to the connector is connected to the connector are transferred to the frame by the connector, and the printed circuit board can thus be made thin.

Abstract: The invention relates to a pin (21) for connecting an electrical conductor (2) to a PCB (4). The pin has a first part (24) thrust into a hole in the PCB and a second part (26), to which the electrical conductor (2) is connected by a sliding contact (8). The cross-sectional dimension (d2) of the second part (26) is greater than the cross-sectional dimension (d1) of the first part (24), and between these parts the pin (21) has a shoulder (27) with sharp edges. The hole in the circuit board is coated with a metal which is connected via tabs (22) to electrical conductors (3) of the PCB(4). The pin (21) is soldered in the hole with the aid of soldering metal (25) and flux. When the flux is heated it creeps along the surface of the pin. During soldering, the shoulder (27) with the edges prevents the flux reaching the second part (26) of the pin (21 ), the second part having contact surfaces (29) on the pin (21) against the sliding contact (8) and where the flux would be a contact resistance.

Abstract: The present invention relates to a printed circuit board provided with electrical contact devices (7) and intended to be mounted in the back plane of a card frame (2) such as to form a magazine (1) in which printed circuit cards (6) having electrical contact devices (8) corresponding to the contact devices (7) on the board can be inserted at right angles to the back plane. The circuit board (3) forms an electrical connecting unit for the circuit cards in the back plane of the magazine. In accordance with the invention, the circuit board is configured to provide a self-supporting and stiffening structure in the form of a sandwich element (10).