Fan controller?

GX and Typhoon hardware, this includes, displays, cables and accessory cards.

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Paradigm
Matrix Orbital
Matrix Orbital
Posts: 255
Joined: Thu Sep 13, 2001 6:00 pm
Location: Calgary, Alberta, Canada

Post by Paradigm »

cipher_nemo,

I haven't seen a DC fan that can't be PWM controlled. It's just a matter of frequency. Get it well over 20KHz and you won't have any possibility of a human hearing it. Of course there are a few other tricks to help too, but I wouldn't want to give away all of our secrets <:)
James McTavish, P.Eng
Director of Engineering
Matrix Orbital

NeilF
LCD Geek
Posts: 36
Joined: Fri Apr 13, 2007 6:36 am

Post by NeilF »

Paradigm wrote:No, you're not hearing things. Our previous motor controller did use pulse control, however it did it at a much slower rate. The result is that there are artifacts within the audible range. On some fans, you really couldn't hear it. On others, you definitely could.

If we do go pulse control on this next one, it will be in the order of 1000 times faster. This would push any artifacts, or harmonics there of, way out of the realm of human hearing.
The one benefit of pulse (on your previous units) was the 'strobe' effect.

On my unit my fans appear to either be still or turning VERY slowly... Looks VERY cool!

chunkywolf
LCD?
Posts: 2
Joined: Mon Jul 12, 2004 1:18 pm

Post by chunkywolf »

Is there any estimate of when this will be coming out?

Henry
OMNIPRESENT
OMNIPRESENT
Posts: 3002
Joined: Tue Aug 14, 2001 6:00 pm
Contact:

Post by Henry »

The prototype PCB arrived today, and code work begins tomorrow, so if all goes well there might be pics by the end of the week. <:)
Henry J.
President
Matrix Orbital

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