I did have reason to investigate this one time. A typical "D-cell" alkaline battery is rated for 100 hours @ 150 mA. It therefore should be "rated" at 50 hours or less at 300 mA (is my guess) Doug Brooks At 10:58 PM 11/20/2002 -0500, Mike Neaves wrote: >Hi Everybody! > > I have a question that I would like answered.... > > This question doesn't have much to do with SI, but, with the > "plethora" of electrical knowledge available in this forum, I expect > > that someone may know the answer I am searching for... > >The question is: > > How long can I expect '2' alkaline D cell batteries connected in >series > to provide a relatively constant current of 0.3 Amps? > > i.e. 3 volts / 10ohms = 0.28 to 0.30 Amps > >Thanks, > >Mike > _______________________________________________________________________________ UltraCAD Design announces availability of its new book "Signal Integrity Issues in PCB Design" Details at www.ultracad.com ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu