Quote:
Originally Posted by Joe Ross
But what is the efficiency of the DC-DC converter and at what cost, considering the high current draw?
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That's a separate question (but a good one).
There's also the question of motor speed. To get the higher output mechanical power, the motor would be operating at a higher speed, thus (potentially, depending on the application) requiring another stage of gear reduction with the attendant additional inefficiency.
But the point is, the RS-775-18 was designed for 18 volts, and it is far more efficient at that higher voltage.