Automatic fan controller for server racks

Dilshan Jayakody published a new build: In this post we describe fan controller which we designed for our 9U wall mount server cabinet. This fan controller is designed to drive a 12V DC cooler fan with pre-configured intervals or by monitoring the temperature of the server cabinet. Core components of this fan controller is CD4060 […]

App note: Reducing acoustic noise in PWM controlled fans

Microchip describes techniques to reduce acoustic noise in pulse width modulator controlled fans. One solution is to use an RC filter to decrease the slew-rate of the PWM pulses. Fan speed control extends fan service life and decreases airflow noise and average fan current. The most efficient way to implement fan speed control is to […]