Degaussing technique

Details Degaussing technique Degaussing technique

1992-12-24

1995-05-16

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

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

361151, H01F 1300

Patent

active

054166640

ABSTRACT:
To degauss cassettes of magnetic tape, a magnetic field is applied to the magnetic material with a flux density of at least 1,000 gauss and at an angle between 20 degrees and 70 degrees from the horizontal of the magnetic tape for a time period of at least one second and the field is alternated at a frequency of at least ten hertz. The magnetic material may be rotated while it is in the field.

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