Higher power density, better ease of use, and unique operating modes are among the more important characteristics distinguishing today's power supplies and sources. Flexible autoranging or multiranging DC supplies, which support output voltage and current combinations within the supply's maximum power, voltage, and current ratings, have become more widely available. And, direct control of constant current or constant voltage output-so-called CC or CV priority-is a relatively new mode that ensures difficult loads are correctly driven. Table 1 compares several DC power supplies.
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