Contributed by:
Flowerman
Images archived: 2001
Just for fun, I wanted
to show how easy it is to turn a PC fan into an intake,
or into an exhaust fan. The fan I am using is quite
small, but the objective is still the same. The first
step is to find or buy a 12v DC plug adapter. This fan
here is rated at 80cfm, which will work for a small box
set-up.
Here's is some info on the 12v DC
adapter: (Model 420A4141)
Output (DC) 12.0V @
500mA
Output Voltage VDC(1)
Input 108VAC
Output Volts @ 100% Load 10.20
Input 132VAC
Output Volts @ 100% Load 13.60
Input 132VAC
Output Volts @ 10% Load 17.40
UL(2) UL*
CSA(3) L
Plug(4) 1
Simply cut the wires at the end, and strip down
about a inch of bare wire is showing.
If you
dont know which wire to wire up, for instance theyre
all black wires, dont worry, it will only work one way,
and if wired wrong, will simply not work at all. But the
idea is, black to black, red to red. This one here that
I used, had one black and one red coming from the fan,
and from the adapter, one black and one black and white.
The black and white wire from the adapter got wired to
the all black wire from the fan. And the all black wire
from the adapter, gets wired to the all red wire from
the fan.
To add another fan, just connect the
wires of the same together. All black goes with black,
all red goes with red. So you would still only use 2
connectors all together. Heres a few more pictures. But
for the most part, I just wanted to show how simple it
is. Make sure you get an adapter which is rated DC for
the output.
Finished
Testing
Also a worthwhile consideration is places like
radio shack and grainger also have nice 4" muffin fans
that move as much as 200 cfm and more, which run on 110
vac. They come with a handy power cord that has a
special connector on one end for the fan and a plug on
the other end for plugging into the wall socket or
humistat / thermostat.
