fan

bkr527 · 06/06/2006, 03:23 PM

recently bought a metal halide 175 w/ 15 k lamp. can i run a parallel line to feed power to my fan? fan is 115 vac 220 mA and 20 W max. please advise.

AZDesertRat · 06/06/2006, 03:35 PM

If you mean feed it from the wires going from the ballast up to the bulb, No. The ballast boosts the frequency to the bulb.
You will probably find your AC fan to be noisy as I did with every one I ever tried. I finally settled on Vantec Stealth DC fans and a variable voltage DC power supply from Harbor Freight Tools or Wal Mart. Much quieter and you can vary the fan speed to suit your conditions. I run mine at 6 to 9v DC and they are really quiet.

bkr527 · 06/06/2006, 07:55 PM

thanks for responding. i saw vantec fans 120 mm on the net but they are for pcs. how do i power them up?
thanks again.
emil

AZDesertRat · 06/06/2006, 08:00 PM

As I pointed out before, you get an old DC cell phone charger power supply or other DC 12V power adapter or better yet the variable voltage style I mentioned. They are less than $10 at Harbor Freight or Wal Mart. Just cut the pin plug off and wire it to the red and black wires on the fan. Ignore the yellow wire on the fan.

Ti · 06/06/2006, 09:39 PM

what is the yellow wire for?

AZDesertRat · 06/06/2006, 11:20 PM

Some computers have controllers that can turn fans on and off or vary the speeds.

bkr527 · 06/08/2006, 02:38 PM

thank you desert rat. you're a big help.

06/06/2006, 03:23 PM	#1
bkr527 Registered Member Join Date: Oct 2005 Location: union,nj Posts: 15	fan recently bought a metal halide 175 w/ 15 k lamp. can i run a parallel line to feed power to my fan? fan is 115 vac 220 mA and 20 W max. please advise. __________________ reefs are cool Current Tank Info: 110 aga, metal halides,reef devil skimmer, sump, , protein skimmer

06/06/2006, 07:55 PM	#3
bkr527 Registered Member Join Date: Oct 2005 Location: union,nj Posts: 15	thanks for responding. i saw vantec fans 120 mm on the net but they are for pcs. how do i power them up? thanks again. emil __________________ reefs are cool Current Tank Info: 110 aga, metal halides,reef devil skimmer, sump, , protein skimmer

06/06/2006, 09:39 PM	#5
Ti Registered Member Join Date: Oct 2004 Location: Bay Area Posts: 7,927	what is the yellow wire for? __________________ Hair algae is my Macro algae.

06/08/2006, 02:38 PM	#7
bkr527 Registered Member Join Date: Oct 2005 Location: union,nj Posts: 15	thank you desert rat. you're a big help. __________________ reefs are cool Current Tank Info: 110 aga, metal halides,reef devil skimmer, sump, , protein skimmer

06/06/2006, 03:35 PM	#2
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	If you mean feed it from the wires going from the ballast up to the bulb, No. The ballast boosts the frequency to the bulb. You will probably find your AC fan to be noisy as I did with every one I ever tried. I finally settled on Vantec Stealth DC fans and a variable voltage DC power supply from Harbor Freight Tools or Wal Mart. Much quieter and you can vary the fan speed to suit your conditions. I run mine at 6 to 9v DC and they are really quiet.

06/06/2006, 08:00 PM	#4
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	As I pointed out before, you get an old DC cell phone charger power supply or other DC 12V power adapter or better yet the variable voltage style I mentioned. They are less than $10 at Harbor Freight or Wal Mart. Just cut the pin plug off and wire it to the red and black wires on the fan. Ignore the yellow wire on the fan.

06/06/2006, 11:20 PM	#6
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	Some computers have controllers that can turn fans on and off or vary the speeds.