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Record head saturation in AC bias recording

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1 Author(s)
Fujiwara, T. ; Toshiba Research Consulting Corporation, Japan.

The head core saturation problem in ac bias audio recording is analyzed. An approximate expression, which should be satisfied in order to avoid head saturation, is obtained in terms of head core saturation flux density Bm, gap length g, tape coercivity Hc, and tape coating thickness δ. Experimental verification is obtained by using various values of Bm,g,Hc, and δ.

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Magnetics, IEEE Transactions on  (Volume:15 ,  Issue: 3 )