Love This

[Gary Derian]

Cooling fans are PWM controlled to minimize noise when full cooling is not
needed.

Gary Derian <gderian at cybergate.net>

>
>  I thought that cooling fans worked on an on/off system.  Under what
>conditions would you want PWM control, and what is the pulse width that is
>being modulated?  You guys really know how to humble a guy; I thought I had
>a lock on cooling fans!(:<
>>Clarence
>
>