Here's another off-the-shelf Peltier Effect thermoelectric gernerator (like the Ecofan) capable of driving a small fan to force convection through gasifier stoves - without batteries. Output is 4.5 VDC. Designed to fit atop propane camp lanterns or kerosene lanterns "to power a small radio, some cell phones, mp3 players, electronic organizers"... so naturally, this stove application comes to mind. http://www.radiolantern.com/index.html - Chris Smith - Stoves List Archives and Website: http://www.crest.org/discussion/stoves/current/ http://www.ikweb.com/enuff/public_html/Stoves.html Stoves List Moderators: Ron Larson, ronallarson@qwest.net Alex English, english@adan.kingston.net Elsen L. Karstad, elk@wananchi.com www.chardust.com List-Post: <mailto:stoves@crest.org> List-Help: <mailto:stoves-help@crest.org> List-Unsubscribe: <mailto:stoves-unsubscribe@crest.org> List-Subscribe: <mailto:stoves-subscribe@crest.org> Sponsor the Stoves List: http://www.crest.org/discuss3.html - Other Biomass Stoves Events and Information: http://www.bioenergy2002.org http://solstice.crest.org/renewables/biomass-info/ http://solstice.crest.org/renewables/biomass-info/carbon.shtml For information about CHAMBERS STOVES http://www.ikweb.com/enuff/public_html/Chamber.htm