Abstract: A vibrating sample magnetometer controls an electromechanical drive using both ac and dc control and a position sensor. Absolute position sensing is used in a feedback loop to control both an alternating current (ac) drive and a direct current (dc) drive to the electromechanical drive. Improved performance and stability results.

Abstract: A vibrating sample magnetometer controls an electromechanical drive using both ac and dc control and a position sensor. Absolute position sensing is used in a feedback loop to control both an alternating current (ac) drive and a direct current (dc) drive to the electromechanical drive. Improved performance and stability results.

Abstract: A multiple terminal connector plug having an outer head pin that defines a first terminal electrically insulated from spaced tubular terminals, the diameters of which correspond generally to that of the head pin, the tubular terminals being secured in electrically insulated spaced relation by a molded plastic material that is applied in a preliminary step, the entire construction including the interconnection of the terminals to conducting wires being fixed in position by a molded body that provides for manipulation and use of the plug and that further encapsulates the connection of the conductor wires to the tubular terminals.

Abstract: A swivel electrical connector having an internal socket conductor for receiving a male plug therein and having an external conductor for receiving a spring contact in engagement therewith, the internal socket conductor and the external conductor being formed of concentric eyelets and encapsulated in a plastic body, the entire connector being constructed without the requirement of screw machine parts.