Quote:
Originally Posted by dixe134
I have 4 possible power supply options on hand currently for my tower cooling project.I have purchased a blower specifying -12v 700 ma..I have a cell charger4.4v 1.5 amp---ANOTHER 12 V 200 MA POWER SUPPLY---AND A THIRD 9V-210 MA POWER SUPPLY,and finally a 13.8v-1.5amp portable radio battery charger. The fan is rated at 25 cfm i know that is way more than i need to cool the tower.Which of my power supply's will work better for this application? Thanks for your help.
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The 4.4 volt will not spin the fan, the next 2 at 200ma and 210 ma do not have the current and will overload or burn out because you need at least 700ma @ 12 volts. The battery charger is not rated for continuios duty but has the needed current and volts. So I would say none of the above.