Magnetic memory disc purge erase apparatus

Details Magnetic memory disc purge erase apparatus Magnetic memory disc purge erase apparatus

1986-12-15

1989-07-11

Hix, L. T.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

H01F 1300

Patent

active

048477273

ABSTRACT:
A purge erase apparatus is presented to erase information stored on a magnetic disc. A multiplicity of coils are connected in parallel and are arranged around the disc to create a magnetic field having a region of maximum field intensity. When an erase signal is given, the information on the disc will be erased in one or two revolutions of the rotating magnetic disc through the region of maximum field intensity.

REFERENCES:
patent: 2975239 (1961-03-01), Jackson
patent: 4462055 (1984-07-01), Jackson
patent: 4539619 (1985-09-01), Hill
patent: 4551782 (1985-11-01), Seely et al.

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