Shawn enquired. > Oo, good topic, what causes fans to hum? Sealing fans that is.
That's easy Shawn, they don't know the words. After everyone stops groaning I'll try to give a serious answer. Most ceiling fans use a DC motor, so the AC line current has to be changed to DC by a rectifier. There should be a little filtering in the form of a capacitor or a large inductance in the motor itself. If the fan is very old the capacitor may have failed and replacing it would quiet the fan. If the fan has hummed since day one it was poorly designed, a common problem in everything from chairs to computer software. Regards. Max. K 4 O D S. Email: [EMAIL PROTECTED] Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with tubes group send an email to, [EMAIL PROTECTED] ----- Original Message ----- From: "Shawn Keen" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, August 16, 2006 11:02 AM Subject: Re: [BlindHandyMan] Fan maintenance > Oo, good topic, what causes fans to humm? Sealing fans that is. > > > ----- Original Message ----- > From: "Dan Rossi" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Wednesday, August 16, 2006 10:47 AM > Subject: Re: [BlindHandyMan] Fan maintenance > > >> Just out of curiosity, can Max or Tom shed a bit more light on the fan >> subject? I wonder if it is not something electronic and not just >> mechanical, such as burned out coils on the transformer or something like >> that. >> >> I also had a big box fan that I ran every night for white noise. I ran >> it >> on medium speed for years. After a long time, if I turned the fan on >> medium it would not start turning. I could possibly feel a bit of >> vibration like it might sort of been trying to turn, but it just wouldn't >> get started. However, if I turned it on low or high, it worked just >> fine. >> If I turned it on high, let it get started, then turned it to medium, >> sometimes it would stay going, but more often than not it would just slow >> to a stop. >> >> Later. >> >> -- >> Blue skies. >> Dan Rossi >> Carnegie Mellon University. >> E-Mail: [EMAIL PROTECTED] >> Tel: (412) 268-9081 >> >> >> To listen to the show archives go to link >> http://acbradio.org/handyman.html >> or >> ftp://ftp.acbradio.org/acbradio-archives/handyman/ >> >> The Pod Cast address for the Blind Handy Man Show is. >> http://www.acbradio.org/news/xml/podcast.php?pgm=saturday >> >> The Pod Cast address for the Cooking In The Dark Show is. >> http://www.gcast.com/u/cookingindark/main.xml >> >> Visit The New Blind Handy Man Files Page To Review Contributions From >> Various List Members At The Following Address: >> http://www.jaws-users.com/handyman/ >> Visit the new archives page at the following address >> http://www.mail-archive.com/[email protected]/ >> For a complete list of email commands pertaining to the Blind Handy Man >> list just send a blank message to: >> [EMAIL PROTECTED] >> Yahoo! Groups Links >> >> >> >> >> >> >> >> >> >> -- >> No virus found in this incoming message. >> Checked by AVG Free Edition. >> Version: 7.1.405 / Virus Database: 268.10.10/419 - Release Date: >> 8/15/2006 >> >> > > > > To listen to the show archives go to link > http://acbradio.org/handyman.html > or > ftp://ftp.acbradio.org/acbradio-archives/handyman/ > > The Pod Cast address for the Blind Handy Man Show is. > http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > > The Pod Cast address for the Cooking In The Dark Show is. > http://www.gcast.com/u/cookingindark/main.xml > > Visit The New Blind Handy Man Files Page To Review Contributions From > Various List Members At The Following Address: > http://www.jaws-users.com/handyman/ > Visit the new archives page at the following address > http://www.mail-archive.com/[email protected]/ > For a complete list of email commands pertaining to the Blind Handy Man > list just send a blank message to: > [EMAIL PROTECTED] > Yahoo! Groups Links > > > > > > > To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday The Pod Cast address for the Cooking In The Dark Show is. http://www.gcast.com/u/cookingindark/main.xml Visit The New Blind Handy Man Files Page To Review Contributions From Various List Members At The Following Address: http://www.jaws-users.com/handyman/ Visit the new archives page at the following address http://www.mail-archive.com/[email protected]/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/blindhandyman/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
