Who hav experience DIY a fan controller ??
i know can use rheostat,but y sum ppl hav to custom a pcb board ??


rheostst



custom pcb board

This post has been edited by lun1986: Dec 13 2009, 09:30 AM

can your VR control voltage?
that's it

VR control voltage ???? for rheosts ?

This post has been edited by lun1986: Dec 13 2009, 10:48 AM

i think the pcb is used on powerful fans...

some pcb is to provide better voltage control and better current distribution.
i think that pcb is got something to do with the pulse wave as in pwm control.

rheostat cant provide control for bigger powerful fan as the current is not enuf and will burn the rheostat

anyway... it is better to buy a ready made fan controller. save the hassle, cheaper and better.

do u know how much rheostat cost??
(hint: fan controller cost cheaper than rheostat)

read it carefully...

try go build a custom pcb. buy the ic, mosfet, capacitor, reostat and buid a decent fan controller...
will it be cheaper than ready/mass produce one?

anyway... u can try running noisy 120mm thru ur so call fan contoller(reostat) for long term see what will happen.

thanks for everyone's comment .
just feel weird y ppl dun use the rheostat but custom a circuit.
custom a circuit really take alot time n $$. summore those component really not cheap.

another question,
can i DIY the PSU 20 pin to 24 by solder the other 4pin from the psu ??

can but y u wan to do that?
there are converter for this type of application.

just wanna diy everything

This post has been edited by lun1986: Dec 18 2009, 12:27 AM