System for controlling rotary speed of computer fan

Details System for controlling rotary speed of computer fan System for controlling rotary speed of computer fan

2009-08-21

2011-11-08

Leykin, Rita (Department: 2837)

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

Armature control by digital or combined analog and digital...

C388S825000, C388S828000, C318S599000

Reexamination Certificate

active

08055124

ABSTRACT:
A system can control a rotary speed of a computer fan according to the type of the computer fan. If the computer fan is determined to be a 3-pin fan, the system can output a changeable voltage to control the rotary speed of the 3-pin fan.

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