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NTC fan speed control

NTC fan speed control PUBLIC

This is the complete circuit to control the mini fan in my Apple’s Time Capsule by a NTC sensor and a dual timer ICM7556IPD (CMOS). The project basically consisted of three parts because I did not...

by Sancho_P | updated November 13, 2012

555   behavioral-sources   fan-speed-control   newbie   ntc   pwm   time-capsule  

NTC converter for fan speed control

NTC converter for fan speed control PUBLIC

A simple converter for a NTC thermal sensor to a voltage signal. The DC-Sweep simulation is used to pick the desired resistance value in series to the NTC.

by Sancho_P | updated November 07, 2012

555   fan-speed-control   newbie   ntc   pwm  

555 Clock for fan speed control

555 Clock for fan speed control PUBLIC

A 25 kHz clock circuit, set to about 75 % duty cycle, using a 555 timer.

by Sancho_P | updated November 07, 2012

555   behavioral-sources   fan-speed-control   newbie   ntc   pwm  

555 PWM for fan speed control

555 PWM for fan speed control PUBLIC

I wanted to control a computer’s fan speed by the air temperature at the “hot spot” (the power supply air outlet). The project consists of three parts for easy simulation and was later verified on a...

by Sancho_P | updated November 07, 2012

555   behavioral-sources   fan-speed-control   newbie   ntc   pwm  

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