Adjustable degausser

Details Adjustable degausser Adjustable degausser

H - Electricity

01

F

317/29

H01F 13/00 (2006.01)

Patent

CA 1278820

ABSTRACT OF THE DISCLOSURE This invention relates to devices which are designed to degauss magnetic read/write heads which heads are used in data or other recording on magnetic media. The recording characteristics of a head deteriorate when it has a magnetic bias and a head used to follow high density data tracks may be forced by the bias to follow to one side or the other of a data track thus risking reading failure or misplaced writings. Basically, this invention provides for a degausser which generates a sinewave which decays over time and which can vary the amplitude of that sinewave used in degaussing, the sinewave frequency, and its exponential decay rate, and it can vary these under software control, without changing any components. It also corrects for D.C. offset in the degauss signal which would otherwise provide its own magnetic bias to the probe or workpiece.

504820

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