DEVICE AND METHOD FOR ERASING RECORDED DATA OF MAGNETIC STORAGE

摘要

A recorded data erasing device of a magnetic storage for erasing data of the magnetic storage M with a magnetic field generated from a coil (3) by discharging a charge in a capacitor (5) to the coil (3), wherein the inductance H and the internal resistance R of the coil (3) and the applying voltage V of the capacitor (5) are set such that a rebound phenomenon, where the orientation of the magnetic field is switched by a current flowing reversely through the coil due to polarity change of a transient voltage at the time of discharge, occurs at least once. Recorded data can thereby be erased completely or substantially completely from the storage medium of the magnetic storage M.