I am just wondering ; I have some TSTS7201 from Vishay-Telefunken and these devices do not have any kind of polarity. Pins are at same length and there is nothing mentioning about polarity in the datasheet. What kind of diodes are you using for tx ? On Fri, May 27, 2011 at 12:07 PM, David wrote: > All, > > I am building a small PIC based IR sender which will attach to a > moving object. > > As there is no power source it will have to be battery powered. =A0I was > thinking of 3 AA batteries with an in-circuit charger. =A0The IR LED has > a Vfwd of 1.5v, I can pick a PIC that will operate at 3v. > > So two easy questions: > > 2) Is there anything better than simple AA batteries? > > 3) Recommendations for your favourite battery charge IC, so I can go goog= le. > > Thanks, > > David > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .