Temperature Controlled Fan 12 V for HTPC.

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I had been searching for a fan controller that could be temperature controlled for my HTPC. After searching, finally ended up building this:

[sharedmedia=core:attachments:13249]

[media]http://www.youtube.com/watch?v=1sdDgDuIJgM[/media]

Cost about odd 50 bucks.

Source: http://www.redcircuits.com//Page109.htm
 

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ALPHA17 said:
Okay a small query, what connector is being used to power the fan [PWM OR molex connector]?
Click to expand...

Molex. A study 12 V supply.

#[member='babhishek'], which one is it? The component? I did pretty search around but nothing came close to satisfaction. I am thinking of building another smps based one now but with LM35.
 
the pwm circuit for non pwm fans works very badly with deltas.tried it out on mine,and ended up making even more noise than controlling it.and isnt the afb1212hhe a .8 amp fan?the circuit says 0.7a only?
 
surajspai said:
the pwm circuit for non pwm fans works very badly with deltas.tried it out on mine,and ended up making even more noise than controlling it.and isnt the afb1212hhe a .8 amp fan?the circuit says 0.7a only?
Click to expand...

That's ok, BD140 can drive upto 1.5 A. So it can easily take .8 A.
 
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