Abstract: An online reconfigurable battery system with current surge protection modules (SPM), including: a plurality of battery module strings connected in parallel. The battery module string further includes: an SPM and a plurality of enable/bypass battery modules (EBM) connected in series; where the EBM further includes: a battery, a first switch, and a second switch; the first switch and the battery are connected in series, and then connected to the second switch in parallel to form an EBM that can be enabled or bypassed; the SPM further includes: a variable resistor, a third switch, and a fourth switch; the third switch and the variable resistors are connected in series, and then connected in parallel with the fourth switch to buffer the surge current.

Abstract: An online reconfigurable battery system with current surge protection modules (SPM), including: a plurality of battery module strings connected in parallel. The battery module string further includes: an SPM and a plurality of enable/bypass battery modules (EBM) connected in series; where the EBM further includes: a battery, a first switch, and a second switch; the first switch and the battery are connected in series, and then connected to the second switch in parallel to form an EBM that can be enabled or bypassed; the SPM further includes: a variable resistor, a third switch, and a fourth switch; the third switch and the variable resistors are connected in series, and then connected in parallel with the fourth switch to buffer the surge current.

Abstract: Nowadays, in fabricating a magnetic recording medium, a disk substrate is first mechanically polished to form an even surface. Next, a laser texturing process is performed to produce a textured annular landing zone on the disk substrate. A magnetic layer is then formed on the disk substrate to complete the fabrication process. However, abnormal asperity usually remains on the surface of the disk substrate. Further, as the amount of exposure time in the air increases, an oxide film is inevitably formed on the surface of the disk substrate. Both of them degrade the surface smooth of the disk substrate, resulting in poor control of the size and structure of the laser texture. In addition, due to the irregular distribution of the mechanical polished texture on the disk substrate, a subsequently formed magnetic layer can not easily achieve the desired properties. This invention therefore provides a light texture process for fabricating a magnetic recording medium.

Abstract: A magnetic disk having improved tribological characteristics in the data zone of the disk surface while retaining a low sliding stiction in the landing zone is disclosed. It contains the conventional elements of a substrate, a magnetic recording layer, a protective overcoat, and a lubricant layer on the protective overcoat. However, the lubricant layer is UV irradiated under a photo mask to cause a radially inner zone and a radially outer zone. The photo mask is designed so that the radially outer zone of the lubricant layer has a ratio of bonded/unbonded lubricant molecules greater than that in the radially inner zone. The reduced proportion of mobile lubricant molecules in the data zone prevents the lubricant molecules from being collected by the magnetic head. On the other hand, a large proportion of the lubricant molecules in the landing zone remained mobile. This allowed the sliding stiction in the landing zone to stay at the desiredly low value.

Abstract: A method for predicting total bump height reduction from volume wear rate data for a laser textured magnetic disk. In this method, a bump topography function, r(h), is first established by which the bump half-width, r, is expressed as a function of bump depth, h. Then the bump height depth after first revolution, h.sub.1, is calculated according to the following equation: ##EQU1## Based on the observation of constant wear volume per cycle, the bump height depth after each subsequent revolution, h.sub.i, i=2 . . . N, is calculated according to the following equation: ##EQU2## The so-calculated h.sub.N is the total bump height reduction after the Nth revolution.