snobrder27
New Member
I was searching for a place to find an answer to a problem i have concerning a recent project i started. i found google answers to be too impersonal and i stumbled accross this forum. Anyway, i am building a small paint booth for my basement to use in the cold winters here in vermont. In the booth the fumes are obviously too umbearably to stay in without some type of airflow, so, i have a small computer fan that blows air through dryer tubing and into a makeshift mask so i always have fresh air to breath (i also have a fan venting fumes but that is irrelevant) i have previously been running the fan of a 12 volt car battery that happened to be there at the time. I have an old ac/dc converter or what have you for a laptop. on the back it says that it drops the ac (100-240 volts) to dc at 20 volts. after testing the fan on the dc end for 5 seconds at a time between each solder i figured that the fan should be running faster, which it was, and proceded to solder and heat shrink all my connections. then after showing my father my work which i was very happy with i let the fan run for about 30 seconds and found out that what was bound to happen, happend, the fan started to smell because the 20 volts was too much. i was wondering if there is anyway to drop the 20 volts back to the 12 i was using so that i dont have to have the fan sitting on the battery. I was wonder if i would be able to use resistors or if i would be better off finding a different power supply or returning to the battery, thanks in advance to those who took the time to read and thanks for the help.