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Thread: Will This Work?
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10th Jun 2017, 11:15 AM #1
Will This Work?
I picked up a couple of fans from a decommissioned piece of equipment at work, when I got home I saw they were 24v not 12v.
Couple of weeks later I rescued this.
The plan for the fans are to cut a hole in the back of both my mill and lathe where the circuit boards are and use the fans to cool the circuit boards.
My shed get to 60°C plus in summer.
Ratty 05/2004 -05/07/2010 COOPER 01/08/1998-31/01/2012
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10th Jun 2017, 11:31 AM #2Senior Member
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The fans may work well enough on 12v, if you have that available? (Maybe put a filter on the air intake as well) . Otherwise, check the voltage on the charger, its a bit hard to read but if it is for 24v lead acid, the terminal voltage especially under the very low load of the fan could be a bit high. Not really likely to result in smoke I think, but could be noisy with a short life...
-russ
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10th Jun 2017, 11:38 AM #3Member
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I have several 24v fans running on 12v for different purposes.
Run a bit slower but very quiet. Run on 24v and they are noisy.
Hooroo
John
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10th Jun 2017, 11:47 AM #4Mechanical Butcher
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Worth trying this cheap board?
Ebay item 311592258575
Jordan
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10th Jun 2017, 02:18 PM #5Golden Member
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Just the other day I salvaged a 24v power supply from a discarded printer, maybe keep an eye out for old printers
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10th Jun 2017, 03:55 PM #6Member: Blue and white apron brigade
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The battery charger is perhaps a bit of over kill.
The fans are less than 1/2 A so something like a old laptop or printer power adapter 16-24V would cope quite easily and be better for the fans in the long run than running them on 12V.
I have a 24V fans that I have run from an 18V wall wart (from an old power tool recharger) for many weeks without any problems. When I finally checked the V out of the Walmart its was something like 23V.
BTW always check the voltage coming out of those adapters - some of them have as much as double the rated V. Only one has ever had less than the rated V.
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11th Jun 2017, 01:08 AM #7
A lot of reticulation timers use 24volt wall warts.(Linear transformers)
Cheap and plentiful.I've become a tool of my tools.
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12th Jun 2017, 12:10 AM #8Member
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Aren't they 24VAC?
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12th Jun 2017, 12:14 AM #9
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12th Jun 2017, 12:15 AM #10Member
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No. I meant the retic systems.
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12th Jun 2017, 10:30 AM #11Member: Blue and white apron brigade
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12th Jun 2017, 10:30 PM #12
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12th Jun 2017, 10:44 PM #13Member
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No worries, I did a bit of research and it appears some of the fans are ac/dc compatible. Depending on if they are permanent magnet versions. Anyway, 12V dc is what most computer modders run their 24v fans at to keep the noise down.
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