Chris Carr wrote: > > > Hi all, > > > > Has anyone got a rough idea on a 9V battery life when the circuit draws > > about 16mA. I can reduce by a few milliamps by substituting a 78L05 with > > another type. > > > 5000 Hours. > > Tony, with all due respect, your question is meaningless (as is my answer). > You have to give more information, as do I to make my answer sensible. > > I have not told you, the nominal battery capacity, the chemistry, nor the > manufacturer and model.. > > As it stands your question is akin to "I have a vehicle how fast will it go > ?" > > The vehicle could be a bicycle or a Space Shuttle 8-) > > Regards > > Chris Carr Point taken. After I posted the question, I thought hmmmm.. silly thing to ask :-| I know the battery I will be using, (9V Duracell), so I'll just leave the PIC idling along and see how far it goes. I guess that should answer my own question. The circuit doesn't have to be on all the time, just when needed for it's purpose, which may take 5 mins to 1/2 hour(?), and this may be frequent, or infrequent. -- Best regards Tony mICros http://www.bubblesoftonline.com mailto:sales@bubblesoftonline.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu