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Posts Tagged ‘Fan’

Automatic fan controller for server racks

Thursday, March 29th, 2018

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...

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Posted in DIY | 1 Comment »

Fan controller project

Thursday, October 27th, 2016

Lucky Resistor has written up documentation on his fan controller project: The fan controller described on this project page, controls one or more PWM controlled 12V PC fans. It uses the input from two precise DHT22 based temperature sensors. The MCU is an Arduino Uno, which is powered using a...

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Posted in Arduino | No Comments »

App note: Reducing acoustic noise in PWM controlled fans

Saturday, September 8th, 2012

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...

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Posted in app notes | 1 Comment »

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