Post by thread:Generator

Look here: http://www.realgoods.com/ >From owner-piclistKILLspamMITVMA.MIT.EDU Fri Apr 30 12:51:02 1999 >Return-Path: <.....owner-piclistKILLspam.....MITVMA.MIT.EDU> >Received: from LIME.EASE.LSOFT.COM (lime.ease.lsoft.com [209.119.1.41]) > by mauler.srl.org (8.8.7/8.8.7) with ESMTP id MAA27368 > for <EraseMEmichaelspam_OUTTakeThisOuTMAULER.SRL.ORG>; Fri, 30 Apr 1999 12:51:01 -0700 >Received: from PEAR.EASE.LSOFT.COM (209.119.0.19) by LIME.EASE.LSOFT.COM (LSMTP for Digital Unix v1.1b) with SMTP id <10.0011F71Dspam_OUTLIME.EASE.LSOFT.COM>; Fri, 30 Apr 1999 15:42:20 -0400 {Quote hidden}>Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV release 1.8c) with > NJE id 4850 for @spam@PICLISTKILLspamMITVMA.MIT.EDU; Fri, 30 Apr 1999 15:43:24 > -0400 >Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail > V1.2b/1.8b) with BSMTP id 5245; Fri, 30 Apr 1999 15:43:15 -0400 >Received: from green.its.bldrdoc.gov [132.163.64.205] by mitvma.mit.edu (IBM VM > SMTP V2R4a) via TCP with SMTP ; Fri, 30 Apr 1999 15:43:10 EDT >X-Comment: mitvma.mit.edu: Mail was sent by green.its.bldrdoc.gov >Received: from kelso.its.bldrdoc.gov (kelso.its.bldrdoc.gov [132.163.64.118]) > by green.its.bldrdoc.gov (8.9.2/8.9.2) with SMTP id NAA17053; Fri, 30 > Apr 1999 13:43:06 -0600 (MDT) >MIME-Version: 1.0 >Content-Type: text/plain; charset="iso-8859-1" >Content-Transfer-Encoding: 7bit >X-Priority: 3 >X-MSMail-Priority: Normal >X-Mailer: Microsoft Outlook Express 4.72.3110.5 >X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 >Message-ID: <01f301be9341$a316f2a0$KILLspam7640a384KILLspamkelso.its.bldrdoc.gov> >Date: Fri, 30 Apr 1999 13:42:49 -0600 >Reply-To: pic microcontroller discussion list <RemoveMEPICLISTTakeThisOuTMITVMA.MIT.EDU> >Sender: pic microcontroller discussion list <spamBeGonePICLISTspamBeGoneMITVMA.MIT.EDU> >From: Steven Davidson <TakeThisOuTsdavidsonEraseMEspam_OUTITS.BLDRDOC.GOV> >Subject: Generator - small >To: RemoveMEPICLISTTakeThisOuTMITVMA.MIT.EDU >Status: R > >I am looking for a small (.5 - 5W) generator I could use to power remote PIC >project using wind. I can find small motors, but no generators on the Web. >Or the use of small motors as a generator? Anyone with experience in these >areas?? Charging batteries with a small generator? > >Thanks. > >Steve > >sdavidsonEraseME.....its.bldrdoc.gov >-------------------------------------------------------- >

> I believe Bike generators are actually magneto's, And the wont drive from > the wind > At least they were a jillion years ago They are usually AC output, if that's what you mean by magnetos. They spin a permanent magnet in a winding. There's no field control as in an alternator, so you get what you get. They need some sort of blade arraingement to function as a windmill, but I've seen this done, using a bicycle wheel, and plastic or metal between the spokes to emulate the "american farm" type windmills. Not bad actually for this application, it's cheap and easy, if not technically efficient.

> They need some sort of blade arraingement to function as a windmill, but > I've seen this done, using a bicycle wheel, and plastic or metal between the > spokes to emulate the "american farm" type windmills. Not bad actually for > this application, it's cheap and easy, if not technically efficient. Hey, take this thread one step further. Surely some of you have seen a "dynohub". They were popular on British bicycles in the 60's and early 70's. A "generator" built into the hub of a 26 inch bicycle wheel. Turn one of those babies into a windmill! Actually I have some experience with windmills. I wish you the best of luck, but gently suggest that unless you have 20mph winds you'd do best to consider other methods. Unless all you care about is kinetic sculpture, not electric power. How about solar power? Even if you are clouded over you'll get output from amorphous cells. If you get any full sun you'll do better with regular crystalline types. Cheers, Bob

> I am looking for a small (.5 - 5W) generator I could use to power remote PIC > project using wind. Is it imperative to use (aeholic?) wind energy ? Why not use solar cell? It is cheap, clean, easy to install. A small 2 x 2" cell can supply up to 6V 20mA in a bright sun... In your case of .5-5W, it would require a cell of aprox one sq ft to generate the 5W. But the PIC circuit will consume 5Watts? -------------------------------------------------------- Wagner Lipnharski - UST Research Inc. - Orlando, Florida Forum and microcontroller web site: http://www.ustr.net Microcontrollers Survey: http://www.ustr.net/tellme.htm

Hi Steve, You can use a bicycles dynamo for the job, it provides between 3 and 6 watts. The difficulty is to construct the rest of the system (blates, gearbox etc.) Regards Kypros Steven Davidson wrote: {Quote hidden}> I am looking for a small (.5 - 5W) generator I could use to power remote PIC > project using wind. I can find small motors, but no generators on the Web. > Or the use of small motors as a generator? Anyone with experience in these > areas?? Charging batteries with a small generator? > > Thanks. > > Steve > > RemoveMEsdavidsonspam_OUTKILLspamits.bldrdoc.gov > --------------------------------------------------------

>> I believe Bike generators are actually magneto's, And the wont drive from >> the wind >> At least they were a jillion years ago > > >They are usually AC output, if that's what you mean by magnetos. >They spin a permanent magnet in a winding. >There's no field control as in an alternator, so you get what you get. > >They need some sort of blade arraingement to function as a windmill, but >I've seen this done, using a bicycle wheel, and plastic or metal between the >spokes to emulate the "american farm" type windmills. Not bad actually for >this application, it's cheap and easy, if not technically efficient. Now that I think about it you correct with the Magnet/ Field issue. I do rember when you tried to turn them by hand they went kinda thump thump, not smooth at all. Bike wheel, clever Idea Regards Keith

On Fri, 30 Apr 1999 21:48:02 -0700 Bob Blick <RemoveMEbobTakeThisOuTspamTED.NET> writes: > I wish you the best of >luck, but gently suggest that unless you have 20mph winds you'd do >best to >consider other methods. Unless all you care about is kinetic >sculpture, >not electric power. I agree with Bob that there are relatively few places where the wind is consistent enough to make a windmill feasible. For such a small amount of power, go with solar instead. >How about solar power? Even if you are clouded over you'll get output >from >amorphous cells. If you get any full sun you'll do better with regular >crystalline types. I think it's the other way around. Amorphous cells (brown in color, less expensive) work well only in full sun. Their output falls off rapidly in cloudy conditions. Crystalline cells (blue in color, more expensive), decrease in output more linearly, producing better power in less than full sun. ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

-----Original Message----- From: Keith Schrader P.E. <EraseMEk2schrspamspamBeGoneIX.NETCOM.COM> To: RemoveMEPICLISTKILLspamMITVMA.MIT.EDU <PICLISTSTOPspamspam_OUTMITVMA.MIT.EDU> Date: Saturday, May 01, 1999 9:24 AM Subject: Re: Generator - small >>> I believe Bike generators are actually magneto's, And the wont drive from {Quote hidden}>>> the wind >>> At least they were a jillion years ago >> >> >>They are usually AC output, if that's what you mean by magnetos. >>They spin a permanent magnet in a winding. >>There's no field control as in an alternator, so you get what you get. >> >>They need some sort of blade arraingement to function as a windmill, but >>I've seen this done, using a bicycle wheel, and plastic or metal between >the >>spokes to emulate the "american farm" type windmills. Not bad actually for >>this application, it's cheap and easy, if not technically efficient. > > >Now that I think about it you correct with the Magnet/ Field issue. I do >rember when you tried to turn them by hand they went kinda thump thump, not >smooth at all. > >Bike wheel, clever Idea > >Regards >Keith That's because a bike generator (at least the old ones i know only have a two pole magnet running between a two pole coil so it will try to allign in 180 degree steps Peter