A disk drive system includes a fixed output voltage regulator including an output terminal that provides a substantially fixed output voltage. A plurality of loads, each includes a voltage supply terminal. A programmable resistor bank which is adapted to selectively provide a plurality of different resistances, is connected in series between the output terminal of the voltage regulator and the voltage supply terminals of the plurality of loads. One of the plurality of different resistances can be selected to adjust a voltage provided to the voltage supply terminals of the plurality of loads.

 
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