Angular dependence of AC transport losses in mnltifilamentary Bi-2223/Ag tape on external DC magnetic fields

AC transport losses, in multifilamentary BSCCO-2223 silver sheathed tapes, as a function of the applied external magnetic field and its direction with respect to the plane of the samples, are reported. The measurements were c arried out at 77K and at frequency of 80 Hz. The AC transport current value s through the tapes, in the range of 10 to 70 percent of their DC critical current values, were kept constant, white rotating the external magnetic fi eld. Also, in a similar way, DC critical current angular characteristics we re measured. The transport losses, as a function of the angle and the magne tic field, scale when using the analogous DC critical current relations. Ob tained results are compared with theoretical models for the self-field loss es.