Try Energizer battery info too: http://data.energizer.com/ I think that with the same technolgy (ex. Alkaline) Duracell and Energizer batteries are quite similar regards Marco >----Messaggio originale---- >Da: toe@lavabit.com >Data: 27/06/2008 17.24 >A: "Microcontroller discussion list - Public." >Ogg: [PIC] Three AA's instead of two > > >So let's say I use three AA batteries instead of two, giving me 4.5 V. > >I can put the 4.5 V straight into the PIC without a problem. > >Should I use the 4.5 V to power the driver chips? > >As people have already mentioned, the driver chips I'm using have >darlingtons inside them, so I'm wasting power. Would I be better to >replace the driver chips with individual transistors? If so can someone >suggest suitable through-hole transistors to use? MOSFET's maybe? > >Or perhaps is there a driver chip out there that doesn't waste so much >power? > >Does anyone know approximate average values for the milliampere hours of >AA and AAA batteries? I've looked at a few datasheets but strangely most >of them don't mention it... and for the few that do mention it, there >seems to be massive variation (e.g. from 500 mAh to 2.7 Ah). > >I went to the Duracell website (they're a popular brand of battery in my >country) and I still couldn't find out what the capacity was of their AA >and AAA batteries. > > > > > >-- >http://www.piclist.com PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist