One of the local machinest group members tests salvaged motors from old vcr's, computers. etc., by chucking them in his lathe and spinning them, with a light bulb connected. They are working as an alternator or generator without modification.
Ed ----- Original Message ----- From: Darryl McMahon To: biofuel@yahoogroups.com Sent: Monday, March 24, 2003 2:28 PM Subject: Re: [biofuel] Electric generators AFAIK, the use of an "exciting" circuit is restricted to DC generators. This is where there is a separate field winding, e.g. shunt, compound or separately-excited configurations. Not applicable to series wound DC motors (which are notoriously difficult to get to work as stable generators). I have an acquaintance who is using a single-phase AC motor as an alternator on a daily basis. He has not mentioned any special wiring set ups. I have used an old furnace fan motor this way, and measured AC current being produced. Voltage was low due to low rpms on the motor. Single phase motor, no extra wiring done. Did not have equipment available to measure frequency. Done just to satisfy my own curiousity. During the 1998 ice storm, there were a couple of articles on this topic stating that if you could find a way to turn the AC motor that was to serve as an alternator, and then just hook up wires from it to the furnace power connections, that should be sufficient to turn the AC furnace fan motor. Darryl McMahon To: biofuel@yahoogroups.com From: martin <[EMAIL PROTECTED]> Date sent: Mon, 24 Mar 2003 15:03:39 -0500 Subject: Re: [biofuel] Electric generators Send reply to: biofuel@yahoogroups.com > My understanding is that the some of the windings have to be "excited" > before the other winding will incite a current. However, this is where my > confusion comes in. I am interested to know how one wires up a motor to > act like a generator. I'll do some "googling" > > Darryl McMahon wrote: > > >Martin, > >my understanding is that any AC motor will generate if turned > >mechanically and the electrical circuit is made. However, I believe the > >frequency (e.g. 60 Hz) is very dependent on maintaining the rpm of the > >motor (now alternator) at the correct speed. > > > >Darryl McMahon > > > > > >To: <biofuel@yahoogroups.com> > >From: "Martin Klingensmith" <[EMAIL PROTECTED]> > >Date sent: Mon, 24 Mar 2003 13:20:31 -0500 > >Subject: [biofuel] Electric generators > >Send reply to: biofuel@yahoogroups.com > > > > > > > >>I thought I read about a way of converting a common AC motor to an AC > >>generator. Could anyone comment on this? I am also wondering how a > >>generator works where the engine can run at a variable speed while still > >>producing a 60hz [or other] waveform. Thanks for any info. > >> > >>--- > >>Martin Klingensmith > >>infoarchive.net [archive.nnytech.net] > >>nnytech.net > >> > >> > >> > > > > > > > > > > > > > > > -- > --- > Martin Klingensmith > http://nnytech.net/ > http://infoarchive.net/ > > > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuels list archives: > http://archive.nnytech.net/ > > Please do NOT send Unsubscribe messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > Yahoo! Groups Sponsor ADVERTISEMENT Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor ---------------------~--> Your own Online Store Selling our Overstock. http://us.click.yahoo.com/rZll0B/4ftFAA/46VHAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
