Thermo-Fan Project

jacquesl · 8th August 2005, 06:14 PM

can someone please help me with this, I want to built a Thermo-Fan controller, so in other words if the amp get's hot the fan must go on.

Example : http://sound.westhost.com/project42.htm

I want to built this one but I cant get or make the pcb design

So can someone please help me ?

pinkmouse · 8th August 2005, 06:18 PM

I wouldn't worry about the pcb, that circuit is simple enough to knock up on prototyping perfboard.

AndrewT · 8th August 2005, 07:03 PM

Hi,
look up the pulse width controller on this site. http://www.cpemma.co.uk/index.html
all the construction details are there including stuffing the perfboard to give a variable speed fan to keep your sink cooler.
PWC is better than lowered voltage since the full 12v is applied to the motor in short bursts and prevents it stalling, which can happen with lowered voltage drive. See if you can find some info on preventing PWC interfering with the input signal.

8th August 2005, 06:14 PM	#1
jacquesl diyAudio Member Join Date: Feb 2005 Location: Lego Land	Thermo-Fan Project can someone please help me with this, I want to built a Thermo-Fan controller, so in other words if the amp get's hot the fan must go on. Example : http://sound.westhost.com/project42.htm I want to built this one but I cant get or make the pcb design So can someone please help me ?

8th August 2005, 06:18 PM	#2
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	I wouldn't worry about the pcb, that circuit is simple enough to knock up on prototyping perfboard. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

8th August 2005, 07:03 PM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, look up the pulse width controller on this site. http://www.cpemma.co.uk/index.html all the construction details are there including stuffing the perfboard to give a variable speed fan to keep your sink cooler. PWC is better than lowered voltage since the full 12v is applied to the motor in short bursts and prevents it stalling, which can happen with lowered voltage drive. See if you can find some info on preventing PWC interfering with the input signal. __________________ regards Andrew T.

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