SmartFan Aurora for speed control of dc motors accepts analog control signals (0–5 V, 0–10 V, 0–20 mA, potentiometer) and adjusts voltage to the motor from 0 to 100% output voltage using a buck control circuit that operates at high frequency. It operates from 12–48 Vac or 10–72 Vdc power source to control 12, 24 or 48 Vdc motors with a current rating up to 6 A.
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