Abstract: An extraction device for removing a connector plug from a disc drive socket including first and second lever plates having a length extending between opposed first and second ends and a width extending between opposed sides and the first and second lever plates being pivotally connected between the first and second ends to form lever handles and lever arms. The lever arms include opposed fingers spaced along the width of the lever plates between opposed sides. The lever arms include a slot between fingers, a width of which is sized to enclose a length of the connector plug. A spring biases the lever arms of the first and second lever plates towards one another and the lever plates being movable against a spring bias to open the lever arms to remove a connector plug. A method for removing a connector from a disc drive socket including aligning an extraction device with the connector plug and operating the device to remove the connector plug.

Abstract: The device is a transformer comprising a magnetic circuit (22) in the form of a closed frame having four parallel columns (23, 24, 25a, 25b) and two primary windings (26a, 26b), each arranged around an inner column of the frame (22). The windings (26a, 26b) are connected at one end to a first phase (P1) and a third phase (P3) respectively and at their other end to a second phase (P2) of the three-phase current source (27). The pipeline (28) comprises a closed circuit consisting of three branched tubular arms (29a, 29b, 29c), each passing through a gap between two columns (23, 24, 25a, 25b) of the frame of the magnetic circuit, the inner columns (25a, 25b) being surrounded by an electrical windings (26a, 26b).