Shucks Max I was hoping for the story about loose metal laminations, hysteresis, and eddy currents setting up harmonic resonance due to back E M F and inductive reactance and such. Well maybe next time huh? I hope no one takes that as a solid answer. I just like to use than fancy electrical engineering terms sometimes. Ron --- Original Message ----- From: "Max Robinson" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, August 16, 2006 5:27 PM Subject: Re: [BlindHandyMan] Fan maintenance
> 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 > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.405 / Virus Database: 268.11.0/420 - Release Date: 8/16/06 > 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/
