Abstract: A restraining assembly for use in conjunction with a linear transducer. The restraining assembly comprises a plurality of spaced apart magnets positioned on a stationary frame, where the magnets provide a reverse torque and restrict excessive rotational speed on a spool when a copper disc or equivalent magnetic flux medium is rotated at a close proximity to the face of the magnets. When a cable is suddenly released and allowed to freely return on the rotating spool, the restraining assembly restrains the high rotational speed at which the cable can accelerate when returning or retracting to the spool, such that the restraining assembly prevents the cable from self-destruction and/or damage to the linear transducer.