Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1985-05-13
1986-08-19
Gellner, Michael L.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
H01F 1300
Patent
active
046073108
ABSTRACT:
This invention relates to the field of degaussing devices and has particular applicability to such devices which are used to remove magnetic bias from digital recording heads in mass storage devices. It provides for a device which employs a microcontroller integrated circuit capable of hardware multiply and a digital to analog converter to produce a decaying sinewave signal. The rest of the general requirements for a functional degauss circuit are generally shown. The height and frequency of this sinewave signal can be modified under software control using this invention.
REFERENCES:
patent: 4462059 (1984-07-01), Yamagami et al.
Channel William D.
Gunter, III Charlie E.
Atlass M. B.
Gellner Michael L.
Genovese J. A.
Magnetic Peripherals Inc.
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