transformer for two 12V DC fans? - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 04-02-2004, 01:52 PM Thread Starter
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Greetings to the Lighting Forum.

I wish to instal two 12V DC pancake fans in a DIY CF hood, but my electrical engineering is a little rusty!

If the fans are 12 Vdc, 0.15 Amp., is the current additive?
I mean, do I need a 12 Vdc transformer with at least 0.30 Amps?

Also, has anyone found a god online source for transformers like this to install within the hood itself, tapping into the same 110V AC power that supplies the transformer?

Any advice appreciated!

Bob
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post #2 of 5 (permalink) Old 04-02-2004, 03:57 PM
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bell transformer... works best... cordless phone charger (not mobile phones) there normaly about 12v, if not get a 7.5 whichever i run a coldcathode on 7.5..

if your doing this yourself.. why not get some light up blue LED fans, give yourself a bit of moonlight aswell

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post #3 of 5 (permalink) Old 04-02-2004, 03:58 PM
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also dont worry about the amps. not on 12v anyways, i think thats just how many amps they actually draw from the power source.

55US Gallon Medium Planted | 36x15x24Tall
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Ehiem 2232 Thermo
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post #4 of 5 (permalink) Old 04-02-2004, 05:58 PM
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I remember going through this with car stereo speakers, only we were trying to figure out the resistance, which is in ohms. (???) I don't remember the wattage or amperage being a problem, either in parallel or series. But I am not even a novice when it comes to electronics.

Sean

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post #5 of 5 (permalink) Old 04-02-2004, 06:07 PM
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I used an old scanner power supply. Look around in your garage...
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