Fan Speed Control Circuit of MAX1626

Published:2011/6/26 7:01:00 Author:Michel | Keyword: Fan, Speed Control, Circuit | From:SeekIC

The aboved picture is fan speed control circuit composed of MAX1626.This circuit reduces the computer, the temperature controller and alarm system noise and power consumption by choosing the MDH626 shut-off and the output voltage function. Logic level is added to 2 (3 V / 5 V) and 3 (SHDN) pins and at the same time,feedback resistance (Rl and R2) are chosen to set the output voltage.Usually, a low output voltage U (01) (here it's eight V) is determined by dividing resistor R1 and R2.High output voltage U (02) here it's l2V) is determined by chip the output (4 feet) voltage.When environment temperature is more than the threshold values within the chip, the MAX6501 (1) and (2) leakage output(TOVER) of monitoring temperature becomes low PWL.



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