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Thermo-Fan Project
Thermo-Fan Project
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Old 8th August 2005, 06:14 PM   #1
jacquesl is offline jacquesl  South Africa
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Default 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 ?
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Old 8th August 2005, 06:18 PM   #2
pinkmouse is offline pinkmouse  Europe
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Thermo-Fan Project
I wouldn't worry about the pcb, that circuit is simple enough to knock up on prototyping perfboard.
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
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Old 8th August 2005, 07:03 PM   #3
AndrewT is offline AndrewT  Scotland
Join Date: Jul 2004
Location: Scottish Borders
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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