WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to www.P65Warnings.ca.gov Click to see Why is this here?
As of August 2018 the State of California has changed the requirements of the “Prop 65” law. We now must list on our website any possible chemicals the can cause cancer, birth defects or reproductive problem.
As an example: ABS plastic contains styrene PVC wire insulation can contain Di(2-ethylhexyl)phthalate (DEHP) electrolytic capacitors can contain Ethylene glycol Brass can contain Lead flame retardant pc boards can contain Tetrabromobisphenol A (TBBPA) Aluminum alloys can contain Chromium To put it simply we are a small company and do not have the resources to test every single part, so we list every thing as hazardous. Please recycle all electronic parts responsibly and under no circumstance eat, drink or smoke these parts and wash your hands after touching! |
Product ReviewsClick here to review this item | ||
Powerful fan with touchy speed regulation input | ||
I evaluated two of these fans. Minimum supply voltage to start the fan spinning is around 5.5V. Fan runs at full speed if blue control input is floated, at a very low speed if it is grounded. For speed control by analog voltage, the speed variation at 12Vs occurs between 0.60 and 0.67V, mostly between 0.60 and 0.65V. This suggests it was designed to be used with a sensor like the LM35, to keep a temperature at around 62C. 0.05V is 0.4% of a 12V supply, making it impractical to set speed with just a pot divider. Instead a single 20k rheostat to ground can be used, with speed variation occurring from 12k to 15k. The analog speed control is poorly implemented, being extremely sensitive to supply voltage variation, even if a stable reference is used for the speed control. PWM control does seem to work, however the speed is highly dependent on both Vs and on amplitude of the 27.5kHz PWM signal. | ||
- H Bustani, NV | ||
Excellent value for a powerful fan | ||
These fans get the job done. A ton of airflow without that annoying whine so many high-power fans have. They are loud, but that is to be expected, these are 30 watt fans. The weird connector they come with is easily cut off and replaced with the more common 4-pin Molex KK connector. These work well in a computer system, with the caveat there is no tachometer output. If your system has a fan-fail alarm, make sure it is disabled for connectors you are using these with. I was concerned about the 0-10VDC control voltage thing, but they also seem to respond well to the 12VDC PWM signal provided by computer equipment. If they burn out after a few hours, I know what killed them I guess. | ||
- Gordon, MI | ||