M
Mike
- Jan 1, 1970
- 0
Hello everybody!
I'm seeking help in building a little device that will allow me to
control speed on high current fans from a low current fan header found
on motherboards.
Preface: The fan header on motherboards was designed to run small
fans, typically around 5W. Most motherboards nowadays support fan
speed control via pulse width modulation. Speed is controlled by
software which reads various thermistors (ex. CPU, hard drives,
ambient…)
What I basically want to do is have a high current 12v input from the
power supply, pulse width modulated low current 12v input from the
motherboard header, and a high current pulse width modulated output.
What would be the *simplest* way to go about this?
(Preferably with parts available from the neighborhood RatShack.)
I'm seeking help in building a little device that will allow me to
control speed on high current fans from a low current fan header found
on motherboards.
Preface: The fan header on motherboards was designed to run small
fans, typically around 5W. Most motherboards nowadays support fan
speed control via pulse width modulation. Speed is controlled by
software which reads various thermistors (ex. CPU, hard drives,
ambient…)
What I basically want to do is have a high current 12v input from the
power supply, pulse width modulated low current 12v input from the
motherboard header, and a high current pulse width modulated output.
What would be the *simplest* way to go about this?
(Preferably with parts available from the neighborhood RatShack.)