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Overclock.net - Overclocking.net > Cooling > Water Cooling | |
Automated fan controller?
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3 Weeks Ago
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#31 (permalink) | |
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i meant the one boosted from the FET. the actual feed to the fan, which would still be a binary signal. so turning that 12v/0v on/off power feed into an average of that.
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3 Weeks Ago
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#32 (permalink) | ||||||||||||||
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Case Modder
 
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Well if you took an average of 12 and 0 it would be 6 all the time lol. The ideal voltage against time curve would be a sine curve but with the peaks pointed and only the troughs curved. This would be like, impossible to do. Would require some serious electronics.
Anyway i need to sleep  Night.
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 British Overclockers Club The Bloo Box (Scratch Build) - Complete! MiniMe - The World's Smallest Watercooled Computer! - IN PROGRESS
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3 Weeks Ago
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#33 (permalink) | |
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no... you know how PWM works. the average depends on how much time signal is 12v, and how much of the time its 0v.
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3 Weeks Ago
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#34 (permalink) | ||||||||||||||
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Case Modder
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But those times are equal.
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3 Weeks Ago
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#35 (permalink) | |
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no they're not. if they were they wouldnt do much for fan controlling...
if the duty cycle isnt variable, there is no controlling factor.
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Last edited by ChielScape : 3 Weeks Ago at 07:12 AM |
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3 Weeks Ago
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#36 (permalink) | ||||||||||||||
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Case Modder
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Yes they are equal lol. The amount of time 12v and 0v is the same, but it is the time that is varied, i.e., the frequency.
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3 Weeks Ago
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#37 (permalink) | |
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Over 9000.
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A and B deliver the same power to the fan (the area under the graph)
C and D do not have equal time.... the on's are shorter than the off's on C, and vice versa on D.
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3 Weeks Ago
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#38 (permalink) | ||||||||||||||
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Case Modder
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Oh very good point. Sorry i was in a hurry at school
Hmm i think Brian has a method for solving this, he is working on it currently. I will get back to you! Either that or just send him a pm 
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3 Weeks Ago
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#39 (permalink) | |
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Over 9000.
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oh, its not like i have a personal interest, i already have a T-ban, but i thought i'd share my thoughts.
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