Operating device preferably for machines for controlling and inspecting containers and/or their contents, and corresponding machine

Operating device (1, 100, 200) comprising means (2) suited to move at least one support (3) with an alternating motion (A) around a first axis (4), wherein said means (2) comprise one or more permanent magnets (5) arranged along at least one section of a circumference that is concentric with said axis (4) and at least one winding (6), said at least one winding (6) being controlled by a control unit (7) wherein said control unit (7) properly varies the voltage and/or current in said at least one winding (6) in order to vary the direction of motion of said at least one support (3) wherein said at least one support is integral either with said at least one winding (6) or with said one or more permanent magnets (5) characterized in that said at least one support (3) is arrangeable around a rotating pin (10), wherein said first axis (4) and the axis (11) of said pin (10) are parallel to each other and coincident, and wherein said pin (10) is set rotating by separate power means (12) and is able to rotate independently from said at least one support (3);

• in that said device also comprises means (9) suited to record the rotation speed of said rotating pin (10) and cooperating with said control unit (7), and in that said control unit (7) controls said means (2) suited to move said at least one support (3) in such a way as to maintain a relative speed equal to zero between said at least one support (3) and said rotating pin (10) for a given interval of time and/or a given angle (B).