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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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In Reply to: What I learned about chassis cooling fans posted by NewbieBaby on April 27, 2005 at 04:32:58:
Hi.My way of silencing a cooling fan is to drop the supply voltage to the fan so less CFM air blowing, less noise.
I added an 8" AC cooling fan to my 1KVA isolation transformer inside its metal housing & reduced its annoying blowing noise to mininum yet provide good cooling by adding a bank of AC caps in series of the cooling fan.
There are other easier & cheaper ways of dropping a cooling fan voltage, e.g. by series up a 120V/240V light bulb, a SCR lighting dimmer (for adjusting the fan speed), or a SS diode rectifier (without any cap filter), if the fan is a DC PC type fan.
Check up my posts in Tube DIY Asylum dd April 5, & 8, 2004 for full
details.Good listening
cheap-Jack
April 27, 2005.
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Follow Ups
- There're easy & cheapie ways of silencing a cooling fan. - cheap-Jack 10:53:21 04/27/05 (4)
- Re: There're easy & cheapie ways of silencing a cooling fan. - unclestu52 11:46:40 04/27/05 (3)
- Yup... - mpathus 22:14:53 07/07/05 (0)
- It depends.... - cheap-Jack 07:07:24 04/28/05 (0)
- Nah! - clifff 14:26:49 04/27/05 (0)
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